Showing papers in "Journal of Elastomers and Plastics in 2016"
TL;DR: In this paper, biochar (BC) was used as a partial and full replacement material for wood flour and was combined with polypropylene to manufacture composite materials, which were evaluated for various mechanical and physical properties.
Abstract: The overall goal of this project was to combine biochar (BC) with plastic and wood residue to create novel composite products. Little to no research has been conducted on combining BC with other materials to form a composite. In this research, BC was used as a partial and full replacement material for wood flour and was combined with polypropylene to manufacture composite materials. The resulting wood/BC/plastic composites were evaluated for various mechanical and physical properties. The composites fabricated with 25% BC had the highest average flexural strength and modulus of elasticity. Composites fabricated with 5% BC had the highest average tensile strength and tensile elasticity. Composites fabricated with 40% BC had the lowest average 24- and 48-h water absorption percentage. The findings suggested that BC has the potential to be a replacement for traditional wood in a variety of composite applications.
46 citations
TL;DR: In this paper, a slow pyrolysis biochar that contained 89% carbon and <2% ash was used as filler for styrene-butadiene rubber (SBR).
Abstract: Birchwood feedstock was used to make slow pyrolysis biochar that contained 89% carbon and <2% ash. This biochar was blended with carbon black (CB) as filler for styrene–butadiene rubber (SBR). Comp...
45 citations
TL;DR: A microwave oven was used as a heating source, and with the aid of some chemical agents and aromatic and aliphatic oils, cured EPDM waste powder was devulcanized at temperatures ranging from 200°C to 260°C as discussed by the authors.
Abstract: Extensive use of rubber in industrial articles and their eventual disposal at the end of their useful service life has created a major concern for the environment. In automotive applications, ethylene–propylene–diene rubber (EPDM) is used to manufacture various parts which will be difficult to dispose of or scrap. A microwave oven was used as a heating source, and with the aid of some chemical agents and aromatic and aliphatic oils, cured EPDM waste powder was devulcanized at temperatures ranging from 200°C to 260°C. The devulcanized waste powder was then revulcanized with a sulfur cure system and its cure and mechanical properties were measured.It emerged that with the aid of the chemical agents, the waste powder devulcanized more efficiently in the aromatic oil than it did in the aliphatic one. The chemical agents had different effects on the devulcanization of the waste powder and mechanical properties of the revulcanized compound. In addition, devulcanization was more efficient at higher temperatures....
33 citations
TL;DR: In this article, the effects of curing temperature from 140°C to 180°C on the network structure and properties of semi-efficient vulcanized natural rubber were studied and the Morphological structure of the tensile sectio...
Abstract: The effects of curing temperature from 140°C to 180°C on the network structure and properties of semi-efficient vulcanized natural rubber were studied. Morphological structure of the tensile sectio...
22 citations
TL;DR: In this article, the behavior of two commercial elastomers, one water swelling and one oil swelling, were tested under acid for one day, and the other set without any acid exposure.
Abstract: Swelling elastomers are special polymers that increase in volume when exposed to water or oil. They have been successfully deployed in oil and gas wells for isolation of water-producing zones, partial replacement of cementing, slimming down of wells, and so on. Performance appraisal and design modifications cannot be attempted without knowledge of material response under specific field conditions. Results from an experimental investigation are presented here about the behavior of two commercial elastomers, one water swelling and one oil swelling. Of the one-month total testing time, one set of samples (for each elastomer type) was tested under acid for one day, and the other set without any acid exposure. Readings were taken at different stages of swelling to record the variation in volume, thickness, and hardness of elastomer samples. Test parameters were set to match existing conditions in a regional oil well. These results can be used to assess performance of elastomers under given well conditions and ...
20 citations
TL;DR: In this paper, the impact strength, tensile properties (elastic modulus, strength, and strain at break), and flexural properties (modulus and strength) were measured to determine the mechanical properties of the blends.
Abstract: In this study, polycarbonate/acrylonitrile–butadiene–styrene (PC/ABS) and polyamide 6/PC/ABS (PA6/PC/ABS) blends were reprocessed (recycled) five times and the influences of multiple molding processes on the thermal, chemical, morphological, rheological, and mechanical properties of the recycled and virgin specimens were investigated. The impact strength, tensile properties (elastic modulus, strength, and strain at break), and flexural properties (modulus and strength) were measured to determine the mechanical properties of the blends. The rheology of the samples was evaluated via measuring the melt flow index (MFI). It was concluded that the chemical structures, melting temperatures, and thermal properties of both blends did not significantly change with recycling. From the mechanical tests, in general, it was found that increasing the number of recycling processes did not considerably alter the flexural properties and tensile strength of PC/ABS blends, but decreased their MFI and impact strength. On the...
18 citations
TL;DR: In this article, it is known that Young's modulus of elastomers increase strongly due to high filler loadings, which is critical for practical applications and processing, and an experimental study was performed in ord...
Abstract: It is known that Young’s modulus of elastomers increase strongly due to high filler loadings, which is critical for practical applications and processing. An experimental study was performed in ord...
17 citations
TL;DR: In this paper, the morphological and interfacial properties of the polymer and bitumen (BIT) in linear styrene-butadiene-styrene (SBS-L) block copolymer and radial SBS-R-modified BIT (PmB) were evaluated by fractal analysis.
Abstract: The present study is aimed at evaluating the morphological and interfacial properties of the polymer and bitumen (BIT) in linear styrene–butadiene–styrene (SBS-L) block copolymer and radial SBS (SBS-R) block copolymer-modified BIT (PmB) by fractal analysis. Fluorescence microscopy technique coupled with image analysis was used to measure the particle size distribution and fractal dimension of PmB morphology formed in mixtures. Fractal analysis approach was proposed as quantitative description method to evaluate nonuniformity of phase-separated SBS polymer particles/fibrils in PmB. Fractal-like structures in fluorescence micrographs of PmB morphology with the polymer phase-separated particles/fibrils were quantified using interface D[BW], BIT-rich phase D[B+BW], and SBS-rich phase D[W+BW] box-counting fractal dimensions. The overall morphological structure became more compact or more fibril organized as the polymer content attained overcritical values. The relatively high values for the BIT-rich phase D[B+...
16 citations
TL;DR: In this article, an epoxidized low molecular weight natural rubber (ELMWNR) with 28 mol% epoxide groups and weight average molecular weight of 49,000 g mol−1 was prepared by oxidative degradation of epoxified natural rubber using periodic acid in the latex state.
Abstract: Epoxidized low molecular weight natural rubber (ELMWNR) with 28 mol% epoxide groups and weight average molecular weight of 49,000 g mol−1 was prepared by oxidative degradation of epoxidized natural rubber (NR) using periodic acid in the latex state. ELMWNR-28 was used at 10 parts per hundred parts of rubber (phr) loading in combination with bis-(triethoxysilylpropyl) tetrasulfide (TESPT) as the silane coupling agent in the range of 0–4.5 phr in silica-reinforced NR compounds. The use of TESPT in combination with ELMWNR-28 gives lower mixing torques and compound viscosities compared with the use of TESPT alone and the system without any compatibilizer. The bound rubber content, modulus, and tensile strength of the compounds with only TESPT strongly depend on the TESPT loading. The use of ELMWNR-28 as a compatibilizer clearly improves such properties compared with the non-compatibilized systems. By adding TESPT into the compound with ELMWNR-28, the properties further improve with increasing TESPT loading. The combined effect of ELMWNR-28 at 10 phr with a small amount of TESPT at 1.5 phr results in compounds with superior processability (i.e. low Mooney viscosity and Payne effect), and only slightly lower modulus and reinforcement index (M300/M100) compared with the use of the optimum content of TESPT. This compatibilizer/TESPT combination has the environmental benefits that the ELMWNR is a naturally based product, and that the reduced amount of TESPT silane coupling agent emits a greatly reduced amount of ethanol during processing
15 citations
TL;DR: In this paper, the Rice and Roth model was used to calculate transport parameters (number density of ions and time travel of ions between sites, mobility, diffusion coefficient, and number of transitions per unit time) of the lithium perchlorate (LiClO4)-doped polyvinyl alcohol/chitosan (PVA/CS) composites.
Abstract: This article focuses on the calculation of transport parameters (number density of ions and time travel of ions between sites, mobility, diffusion coefficient, and number of transitions per unit time) of the lithium perchlorate (LiClO4)-doped poly(vinyl alcohol)/chitosan (PVA/CS) composites using Rice and Roth model. The thermal study reveals a decrease in glass transition temperature for LiClO4-doped PVA/CS composites. The highest ionic conductivity of 3 × 10−6 S cm−1 at room temperature is observed for the 20 wt% LiClO4-containing composite. The temperature-dependent conductivity follows Arrhenius relation and lowest activation energy of 0.153 eV is observed for highest conducting sample. The mechanical properties such as Young’s modulus, stiffness, and tensile strength decreases and its percentage elongation at break increases with increase in LiClO4-doping level in PVA/CS polymer matrix. The scanning electron microscopic images exhibit smooth and homogeneous surface of PVA/CS composite.
15 citations
TL;DR: In this paper, the authors studied the kinetics of the flocculation process in silica-reinforced natural rubber (NR) compounds by following the changes of the storage modulus during thermal annealing under conditions applied for vulcanization.
Abstract: The dispersion stability of silica aggregates in the rubber matrix is one of the concerns for silica-filled compounds. Silica aggregates tend to flocculate due to their poor compatibility with the rubbers and consequent strong tendency for self-association. The flocculation process can occur during compound storage as well as at the onset of vulcanization. This present work studies the kinetics of the flocculation process in silica-reinforced natural rubber (NR) compounds by following the changes of the storage modulus during thermal annealing under conditions applied for vulcanization. The results demonstrate that silica flocculation can be effectively suppressed by increasing compound dump temperature and amount of silane, as these result in a better degree of dispersion, higher degrees of hydrophobation, and filler–rubber interaction. The compounds containing highly dispersible silicas exhibit greater filler–rubber interaction, but their flocculation processes develop faster when compared to the compounds filled with conventional silicas. Epoxidation of NR clearly influences the filler–rubber interaction but shows no clear evidence of a change of flocculation rate.
TL;DR: Waste of foam containing tri(N,N)dimethyleneoxy-3-hydroxypropyl)urea as a polyol was subjected to glycolysis process as mentioned in this paper.
Abstract: Waste of foam containing tri(N,N ′-dimethyleneoxy-3-hydroxypropyl)urea as a polyol was subjected to glycolysis process. After glycolysis, a liquid tea-coloured product, with high viscosity of 17,04...
TL;DR: In this article, the structure of polymer chains with thermodynamically compatible PTMO and PPO soft segments (SS) was identified using data from rheokinetic studies of reactive mixes with different diisocyanates.
Abstract: Segmented polyurethane ureas (SPUUs) were synthesized on the base of oligopropylene oxide (PPO), oligotetramethylene oxide (PTMO), 2,4-toluene diisocyanate, isophorone diisocyanate (IDI), and methylene-o-chloroaniline. Structure of polymer chains with thermodynamically compatible PTMO and PPO soft segments (SS) was identified using data from rheokinetic studies of reactionary mixes with different diisocyanates. The significant swelling value in low-polar solvent toluene and non-elevated softening temperature indicates the formation of loose (defect) structure of the hard phase in compositions, synthesized using IDI. Thermal, thermomechanical, and physicomechanical properties of SPUU with variable compositions of hard segment and SS (blocks) were investigated. An interrelation between structure and properties of block copolymers of new type was estimated. Investigation results showed a significant increase in the strength of polyurethane urea at the equimolar ration between various hard blocks and SS on th...
TL;DR: In this article, surface modified fibres are characterized by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy analyses to identify the functionality, adhesion and phase morphology.
Abstract: In this study, our focus is on the compatibility behaviour of bio-based polyester blend with the addition of surface-modified oil palm fruit bunch fibres (OPFBFs). The surface of OPFBF has been modified using alkali, silane and acetic anhydride solutions. Surface-modified fibres are characterized by Fourier transform infrared spectroscopy, X-ray diffraction and scanning electron microscopy analyses to identify the functionality, adhesion and phase morphology. Untreated and treated fibres are incorporated in the bio-based polyester blend with about 30% of fibre content. Surface-modified fibre biocomposites exhibit improved interaction between the polymer matrix and the fibre. Oil palm fibre-reinforced biocomposites exhibit enhanced thermal, mechanical and morphological properties with incorporation of surface-treated fibre. The OPFBF also acts as a reinforcement filler and adhesion material for the polyester blend.
TL;DR: In this article, the influence of MWCNT and compatibilizer contents on the thermal, mechanical, and viscoelastic properties of polypropylene (PP)/MWCNT nanocomposites was investigated.
Abstract: Polymer composites containing nanofillers are among the most promising research fields for advanced materials. Carbon nanotubes (CNTs) are considered an ideal inclusion for polymer nanocomposites due to superior electrical, thermal, and mechanical properties which can be explained with the unique atomic structure of the nanotubes. Multi-walled carbon nanotubes (MWCNTs) are used as extremely strong nano-reinforcements for composites to produce a new generation of fiber-reinforced plastics with better application properties. In this experimental study, PP/MWCNT polymer nanocomposites with nanofiller concentrations in the range of 0.05–1 wt% MWCNT and the maleic anhydride amount from 0 to 7.5 wt% were investigated. An experimental study is conducted to examine the influence of MWCNT and compatibilizer contents on the thermal, mechanical, and viscoelastic properties of polypropylene (PP)/MWCNT nanocomposites. Extruded samples are characterized by differential scanning calorimetry (DSC), dynamic mechanical the...
TL;DR: In this paper, the differences in performance between two kinds of hydroxyl-terminated polyether (HTPE) binders, the curing reaction kinetics of the prepolymers and polyfunctional isocyanate (N-100) molecules and the thermal properties of the polyurethane (PU) elastomers were studied by non-isothermal differential scanning calorimetry.
Abstract: In order to analyze the differences in performance between two kinds of hydroxyl-terminated polyether (HTPE) binders, the curing reaction kinetics of the prepolymers and polyfunctional isocyanate (N-100) molecules and the thermal properties of the prepolymers and the corresponding polyurethane (PU) elastomers were studied by non-isothermal differential scanning calorimetry. The mechanical properties of PU elastomers were also studied by uniaxial tensile tests. With these data, the binder type could be chosen more appropriately for its application in rocket propellant formulations. The results showed that the reactivity of hydroxyl-terminated block copolyether (TPEG) with an isocyanate group is higher than that of hydroxyl-terminated random copolyether (PET). The chain flexibility of TPEG was less than that of PET, but the stereoregularity and crystallization ability of the former were superior. Compared to the prepolymers, the chain flexibility of the corresponding PU elastomers was reduced, and the cryst...
TL;DR: In this article, the effect of filler surface physics on dynamic and thermal behavior of highly filled polystyrene was investigated and it was found that surface modification of the particle surface with nonpolar groups tends to lower Tg and volume fraction for the adsorbed phase and lower strength of the filler network.
Abstract: Highly filled systems, such as dental materials and tires, have some exceptional properties that make them very special for particular scientists and engineers. In this study, the thermal and dynamic properties of highly nanosilica-filled polystyrene were investigated. Thermal study predicts a phase in the filled system, named as adsorbed polymer, that has a different glass transition temperature (Tg) compared with the neat polymer. The adsorbed polymer seems to be responsible for special thermal properties of the highly filled system. The dynamic properties of the filled system are observed to have a similar trend as the thermal behavior at different particle sizes and concentrations, both increasing linearly with the increase of volume fraction of adsorbed polymer. However, at higher volume fractions or for smaller particles, this trend changes and the filler networking mechanism is considered to be the reason for this change. Effect of the filler network is studied through the Han plot and it is found that the contribution of the filler network to the dynamic behavior of the highly filled system increases by reducing the particle size and increasing the particle loading. Beside the particle size and concentration, the effect of filler surface physics on dynamic and thermal behavior of the highly filled system is investigated and it is found that surface modification of the particle surface with nonpolar groups tends to lower Tg and volume fraction for the adsorbed phase and lower strength of the filler network. In this work, the samples were prepared using the method of stabilizing suspension in polymer solution. For viscoelastic investigation, the dynamic rheometry in sweep mode was chosen, also for studying the thermal
TL;DR: In this article, carbon black-filled NBR composites, which differed in their acrylonitrile (ACN) and butadiene content ratios, were prepared and their curing characteristics and mechanical properties were investigated.
Abstract: Acrylonitrile butadiene rubber (NBR) is widely used in seal applications due to its excellent oil resistance. In this article, carbon black-filled NBR composites, which differed in their acrylonitrile (ACN) and butadiene content ratios, were prepared and their curing characteristics and mechanical properties were investigated. Curing characteristics were investigated by measuring chemical kinetics and onset temperature of cross-linking reaction. Cross-linking density was measured by the volume swelling test. Mechanical properties, oil resistance, and compression set (CS) tests were also conducted. From these results, it was found that the microstructure in NBR polymer is closely connected to the curing characteristics and mechanical properties of the composite. On increasing the ACN content, Shore A hardness, tensile strength at break, elongation at break, oil resistance, and CS were raised, while, on the other hand cross-linking density, kinetics of cross-linking reaction, and bound rubber content were d...
TL;DR: In this article, a macromolecular cross-linker for epoxidized natural rubber (ENR) oligomers is described. But the cross-linking process is performed by glycolysis reaction of polylactic acid oligomers with ethylene glycol.
Abstract: Hydroxyl-capped polylactic acid (PLA) oligomers are prepared by glycolysis reaction of PLA with ethylene glycol (EG) and used as a macromolecular cross-linker for epoxidized natural rubber (ENR). T...
TL;DR: Chitosan-based nanocomposites (NCs) at different modified multiwalled carbon nanotubes (MWCNTs) loadings were produced by solvent casting method as mentioned in this paper.
Abstract: Chitosan-based nanocomposites (NCs) at different modified multiwalled carbon nanotubes (MWCNTs) loadings were produced by solvent casting method. The effective dispersion of the MWCNT in polymer ma...
TL;DR: In this article, two mixed-matrix membranes (MMM) for gas permeability test were prepared by introducing inorganic fillers (silica (SiO2) and magnesium oxide (MgO)) in the composite blend of epoxidized natural rubber (ENR) and polyvinyl chloride (PVC).
Abstract: Two mixed-matrix membranes (MMM) for gas permeability test were prepared by introducing inorganic fillers (silica (SiO2) and magnesium oxide (MgO)) in the composite blend of epoxidized natural rubber (ENR) and polyvinyl chloride (PVC). Inclusion of SiO2 and MgO particles in the membranes resulted in pores formation as observed through scanning electron microscopy. Thermal study demonstrated that there were interaction between the fillers and polymer matrix with SiO2 exhibited better interaction. SiO2 was also observed to disperse more evenly in the membrane compared to MgO. The permeability of carbon dioxide (CO2) and nitrogen (N2) gases was measured in order to determine the effects of SiO2 and MgO in CO2/N2 separation performance of the ENR/PVC/filler membranes. CO2 was found to exhibit higher permeability compared to N2 for all the membranes. The gas permeability of ENR/PVC/SiO2 membrane was significantly higher than ENR/PVC/MgO and ENR/PVC membranes. Interestingly, despite having lower permeability, M...
TL;DR: In this article, the effect of natural rubber latex (NRL) on the properties of Natural Rubber/recycled chloroprene rubber (NR/rCR) blends was investigated.
Abstract: The effect of natural rubber latex (NRL) on the properties of natural rubber/recycled chloroprene rubber (NR/rCR) blends was investigated. The properties of NR/rCR-NRL blends were compared with tho...
TL;DR: In this paper, the effect of mechanical recycling process parameters on the morphology, properties, and hydrolytic degradation of polycaprolactone-based thermoplastic polyurethane/polycaprolacetone was studied.
Abstract: In this study, the effect of mechanical recycling process parameters on the morphology, properties, and hydrolytic degradation of polycaprolactone-based thermoplastic polyurethane/polycaprolactone ...
TL;DR: In this article, the composites were prepared in a compression mold at 130°C, with 20% starch and heat-treated cornstarch, and 20% styrene-butadiene latex.
Abstract: Thermoplastic starch/latex polymer composites were prepared using styrene–butadiene latex and heat-treated cornstarch. The composites were prepared in a compression mold at 130°C, with 20% starch c...
TL;DR: In this paper, natural rubber was reinforced with short carbon fibers (SCFs) at different concentrations (0.20 part per hundred part of rubber (phr)) and the composites were vulcanized by sulfur, then subjected to...
Abstract: Natural rubber was reinforced with a short carbon fibers (SCFs) at different concentrations (0–20 part per hundred part of rubber (phr)). The composites were vulcanized by sulfur, then subjected to...
TL;DR: In this article, an application of EPDM grafted with glycidyl methacrylate (GMA), along with epoxidized natural rubber (ENR) was investigated for tire sidewall blend.
Abstract: Application of ethylene–propylene-diene monomer (EPDM) grafted with glycidyl methacrylate (GMA), along with epoxidized natural rubber (ENR) was investigated for tire sidewall blend. The presence of ENR and EPDM-g-GMA improved physico-mechanical properties of the blends. The best results were obtained using 5 phr EPDM-g-GMA in the blend. Tensile and tear strength of the blend with 5 phr EPDM-g-GMA were 13.7% and 46.5% higher than conventional blend of tire sidewall, respectively. Ozone resistance in dynamic condition of NR/BR/ENR with 5 phr EPDM-g-GMA were 20% and 30% superior than NR/butadiene rubber (BR)/ENR/EPDM and conventional NR/BR with N-(1,3-dimethylbutyl)-N′-phenyl-p-phenylene, respectively. Improved mechanical and ozone resistance properties are due to better homogeneity of cross-link density and carbon black distribution in the blend.
TL;DR: In this article, a methodology to quantify the bound rubber attached to the reinforcing filler silica using the thermogravimetric analyzer was presented, which has proved to be a very useful technique in evaluating the interaction of filler and polymer.
Abstract: Elastomers, usually, are reinforced with reinforcing filler in order to improve their mechanical properties like tensile strength and abrasion resistance. The efficiency of this reinforcement is correlated with different factors like filler structure, surface area, and polymer–filler interactions. This study presents a methodology to quantify the bound rubber attached to the reinforcing filler silica using the thermogravimetric analyzer. Three typical rubber compounds used in tread tire were studied. In the samples tested, the silica content was kept constant, varying only the percentage of the coupling agents. Considering the results of the thermal analysis, physical, mechanical, and rheological tests, the thermogravimetric analysis has proved to be a very useful technique in evaluating the interaction of filler and polymer.
TL;DR: In this article, the effects of montmorillonites on the crystalline structure of polyvinylidene fluoride (PVDF) nanocomposites were characterized and compared by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC).
Abstract: Poly(vinylidene fluoride)/organically modified montmorillonites (PVDF/OMMT) nanocomposites with different clay contents were prepared by melt intercalation and compression moulding. The dielectric properties were studied, and the effects of montmorillonites on the crystalline structure of PVDF were characterized, compared and discussed by X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC). The results show that the dielectric constant of the PVDF/OMMT nanocomposites is improved. XRD and FTIR results indicate that montmorillonites suppress the formation of α-phase crystals and promote the formation of β-phase crystals. DSC studies suggest that the degree of crystallinity is decreased and the melting and crystallization temperature of nanocomposite are increased compared with those of the pristine PVDF.
TL;DR: In this article, a fuzzy logic-based model is developed to predict fusion time (FT) for the contents of nanoclay, processing aid, and calcium stearate in PVC processing.
Abstract: Fusion is a key parameter in achieving polyvinyl chloride (PVC) nanocomposites with desired properties. In the present research, a fuzzy logic (FL)-based model is developed to predict fusion time (FT) for the contents of nanoclay, processing aid, and calcium stearate in PVC processing. In order to have precise rules for the FL model, data mining algorithm RepTree is employed to detect dominating patterns among experimental data. The model parameters are then well adjusted using genetic algorithm. The modeling results show a correlation of 0.86 between predicted and observed values for FT. So, it proved reliability of the idea of employing the decision tree resulted from a data mining algorithm as the base knowledge of FL models. Also, applying genetic algorithm optimization, the correlation coefficient increased from a value of less than 0.83 to 0.86. The calculated correlation coefficient for the test data was 0.88, which denotes good model universalizing ability.
TL;DR: In this paper, the authors measured the glass transition temperature (Tg) of different components in rubber oil and rigid or soft phase in oil-extended thermoplastic elastomer styrene-butadiene-styrene (SBS) by means of rheometer and dynamic mechanical analysis.
Abstract: Rubber oil and thermoplastic elastomer styrene–butadiene–styrene (SBS) were selected for this work to study the distribution of rubber oil in SBS. Glass transition temperature (Tg) of different components in rubber oil and rigid or soft phase in oil-extended thermoplastic elastomer SBS were measured by means of rheometer and dynamic mechanical analysis. Results calculated by Fox equation and verification tests proved that rubber oil is not only distributed in soft phase but also in rigid phase of SBS. Saturated hydrocarbon components of rubber oil tend to dissolve in soft phase, while aromatic components tend to dissolve in rigid phase.