Showing papers on "Styrene-butadiene published in 2017"
TL;DR: In this article, the rheological properties of modified binders have been investigated and the dynamic shear rheometer (DSR) was used to grade the original, RTFO-aged and PAV-aged binders based on the conventional performance grading (PG) and the multiple stress creep recovery (MSCR) systems.
159 citations
TL;DR: The SBR+CMC binder remarkably improve the bonding capacity, cycle stability, and rate performance of battery anode, and the capacity retention was about 87% after 50th cycle relative to the second cycle.
Abstract: When testing the electrochemical performance of metal oxide anode for lithium-ion batteries (LIBs), binder played important role on the electrochemical performance. Which binder was more suitable for preparing transition metal oxides anodes of LIBs has not been systematically researched. Herein, five different binders such as polyvinylidene fluoride (PVDF) HSV900, PVDF 301F, PVDF Solvay5130, the mixture of styrene butadiene rubber and sodium carboxymethyl cellulose (SBR+CMC), and polyacrylonitrile (LA133) were studied to make anode electrodes (compared to the full battery). The electrochemical tests show that using SBR+CMC and LA133 binder which use water as solution were significantly better than PVDF. The SBR+CMC binder remarkably improve the bonding capacity, cycle stability, and rate performance of battery anode, and the capacity retention was about 87% after 50th cycle relative to the second cycle. SBR+CMC binder was more suitable for making transition metal oxides anodes of LIBs.
141 citations
TL;DR: In this paper, a facile synthesis of conducting polymer nanocomposite by incorporating non-covalently functionalized Multi walled Carbon Nanotube (MWCNT) with ionic liquid into SBR matrix and achieve a shielding efficiency of ca.35.
108 citations
TL;DR: In this paper, a novel hybrid of polymer functionalized-carbon nanotube and reduced graphene oxide (PCNT@RGO) was prepared by reversible addition-fragmentation chain transfer polymerization, esterification reaction and reduction process.
81 citations
TL;DR: In this article, an epoxy group-functionalized styrene-butadiene rubbers (G-ESBRs) with different epoxy groups contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the epoxy-group-included monomer.
Abstract: Epoxy group-functionalized styrene-butadiene rubbers (G-ESBRs) with different epoxy group contents were synthesized through emulsion polymerization using glycidyl methacrylate (GMA) as the epoxy group-included monomer, and the silica/G-ESBR nanocomposites without silane coupling agents were prepared. The covalent bonding interfaces, resulting from a ring-opening reaction between the hydroxyl groups on the silica surfaces and the epoxy groups of G-ESBR, were formed during the preparation of the silica/G-ESBR nanocomposites. By increasing the epoxy group content, the number of covalent bonds at the interface increases, contributing to an improvement of the interfacial interaction between the G-ESBR and silica and the dispersion of silica, which were verified and analyzed in detail by bound rubber measurement, transmission electron microscopy (TEM) and rubber process analyzer (RPA). The silica/G-ESBR nanocomposites with improved dispersion of silica and interfacial interaction showed decreased rolling resistance and increased wet skid resistance. The mechanical properties of the nanocomposites were greatly improved with increasing epoxy group contents. The highest tensile strength reached 29.4 MPa at a GMA content of 4.8 wt%, a 55.6% increase compared with that of the nanocomposite without epoxy group.
79 citations
TL;DR: In this paper, the nonlinear rheology of compounds of fumed silica filled emulsion-polymerized styrene butadiene rubber is investigated with respect to silica type (hydrophilic and hydrophobic) and loading.
70 citations
TL;DR: In this paper, the effect of styrene-butadiene-styrene (SBS) copolymer on bitumen performance was investigated in terms of their chemical compositions, microstructures, thermo-analytical behaviors, and physical properties.
61 citations
TL;DR: In this paper, polypyrrole-wrapped halloysite nanotubes (PPy@HNTs) are prepared by polymerization of pyrrole on the surfaces of HNTs.
53 citations
TL;DR: In this paper, Mo-based high vinyl polybutadiene rubber (HVBR) with high loss factor, excellent aging resistance and glass transition temperature closer to room temperature, is a promising damping material.
51 citations
TL;DR: In this article, the concept of supported rubber additives was proposed and vulcanization accelerator 2-benzothiazolethiol (M) was chemically grafted onto the surface of silane modified silica (m-silica) to prepare silica-supported vulcanisation accelerator (silica-s-M), which could be homogeneously dispersed into styrene-butadiene rubber (SBR).
Abstract: To modify the filler surface and simultaneously elude issues related to the physical loss by migration of rubber additives, the concept of “supported rubber additives” was proposed and vulcanization accelerator 2-benzothiazolethiol (M) was chemically grafted onto the surface of silane modified silica (m-silica) to prepare silica-supported vulcanization accelerator (silica-s-M). Silica-s-M could be homogeneously dispersed into styrene-butadiene rubber (SBR). Besides, the interfacial interaction between silica-s-M and SBR was significantly enhanced, which was confirmed by the constrained rubber chains approaching the filler surface. Consequently, silica-s-M effectively reduced the activation energy of vulcanization and SBR/silica-s-M composites showed much better mechanical properties than SBR/m-silica and SBR/silica composites containing equivalent accelerator component. From this work, it is envisioned that this methodology for the surface treatment of silica to prepare supported accelerator may be extended for other nanofillers and functional rubber additives, which may be promising for the preparation of high-performance and functional rubber/nanofiller composites.
51 citations
TL;DR: In this paper, the influence of multi-dimensional nanomaterials composed of surface modified nano-zinc oxide (nano-ZnO) and organic expanded vermiculite (OEVMT) on rheological characteristics of styrene butadiene rubber modified asphalt (SBRMA) before and after different aging methods.
TL;DR: In this article, two different types of latexes (Styrene Acrylate Rubber and Styrene Butadiene Rubber) at five different dosages by weight of cement have been employed in the preparation of latex modified mortars.
TL;DR: In this paper, a novel compatibilizer and reinforcing filler, graphene oxide (GO), was used to improve the thermal and mechanical properties of immiscible carboxylated acrylonitrile butadiene rubber (XNBR) and styrene butane rubber (SBR) blends.
Abstract: This work reports a novel compatibilizer and reinforcing filler, graphene oxide (GO), which significantly improved the thermal and mechanical properties of immiscible carboxylated acrylonitrile butadiene rubber (XNBR) and styrene butadiene rubber (SBR) blends. The observed glass transition temperature shift of XNBR/SBR blends demonstrated the improved compatibility of XNBR and SBR. The analysis by Fourier transform infrared spectra and Raman spectroscopy indicated that GO could form both hydrogen bonding with XNBR and π-π conjugation with SBR, which favored the compatibility of XNBR and SBR components in the blends. This unique amphiphilic character of GO enabled it interact with both polar and non-polar components and significantly improve the mechanical properties of the system. With incorporation of only 0.3 phr (parts per hundred rubber) GO, the tensile strength and tear strength of XNBR/SBR blend increased by 71% and 94%, respectively. The temperature of the maximal rate of degradation process improved by 10 °C, and a higher resistance to swelling in toluene was obtained as well. This work suggests the GO has the potential to be a suitable reinforcing filler and compatibilizer in the immiscible XNBR/SBR blends.
TL;DR: In this article, the interaction between GO and AMICl molecules as well as the effects of GO-IL on the mechanical properties, thermal conductivity and solvent resistance of SBR were thoroughly studied.
Abstract: Ionic liquid 1-allyl-3-methyl-imidazolium chloride (AMICl) is used to fine-tune the surface properties of graphene oxide (GO) sheets for fabricating ionic liquid functionalized GO (GO-IL)/styrene-butadiene rubber (SBR) nanocomposites. The morphology and structure of GO-IL are characterized using atomic force microscope, X-ray diffraction, differential scanning calorimetry, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, UV-vis spectra and Raman spectra. The interaction between GO and AMICl molecules as well as the effects of GO-IL on the mechanical properties, thermal conductivity and solvent resistance of SBR are thoroughly studied. It is found that AMICl molecules can interact with GO via the combination of hydrogen bond and cation–π interaction. GO-IL can be well-dispersed in the SBR matrix, as confirmed by X-ray diffraction and scanning electron microscope. Therefore, the SBR nanocomposites incorporating GO-IL exhibit greatly enhanced performance. The tensile strength, tear strength, thermal conductivity and solvent resistance of GO-IL/SBR nanocomposite with 5 parts per hundred rubber GO-IL are increased by 505, 362, 34 and 31%, respectively, compared with neat SBR. This method provides a new insight into the fabrication of multifunctional GO-based rubber composites. Copyright © 2016 John Wiley & Sons, Ltd.
TL;DR: In this paper, the effects of nanoclay on high temperature properties of two distinct categories of SMA mixtures namely those with fibers and polymers have been investigated and the results revealed that the nanoclayer polymer asphalt binders have higher storage stability as well as better performance characteristics.
TL;DR: In this paper, the effects of three silane coupling agents, triethoxy(octyl)silane (TEOS), bis[3-(triethoxysilyl)propyl]disulfide (TESPD), and bis[ 3-(trihexilyl)-tetrasulfide(TESPT) on the filler-rubber interaction, crosslink density and crosslink structure of the silica-filled solution styrene butadiene rubber (SSBR) vulcanizates were studied.
Abstract: The effects of three silane coupling agents, triethoxy(octyl)silane (TEOS), bis[3-(triethoxysilyl)propyl]disulfide (TESPD), and bis[3-(triethoxysilyl)propyl]tetrasulfide (TESPT) on the filler-rubber interaction, crosslink density and crosslink structure of the silica-filled solution styrene butadiene rubber (SSBR) vulcanizates were studied. High dispersion silica, 7000GR, was used as the filler, and the loading range was varied from 0 to 60 phr. Crosslink density was measured by the swelling method. Experimental results showed that Kraus plot can be applicable to the silica-filled SSBR vulcanizates to separate filler-rubber interaction from the measured swelling data. Filler-rubber interaction increased by increasing sulfur rank in the silane as TEOS < Silica without silanes < TESPD < TESPT. Sulfurless silane, i.e. TEOS, only worked as a covering agent for hydrophobating silica surface. Silica without silane show high filler-rubber interaction than TEOS system because chain-end functionalized SSBR w...
TL;DR: Graphene oxide (GO) with various oxidation degrees were prepared through a modified Hummer's method by varying the dosage of oxidizing agent as mentioned in this paper, which showed that the mechanical strength of nanocomposites were enhanced with the increase of oxidation degree of GO.
TL;DR: In this paper, the authors evaluated the potential impact of carbon nanotubes (CNTs) on the anti-ageing properties of styrene-butadiene-styrene copolymer-modified asphalt (SBS PMA).
Abstract: This paper presents the findings from a study conducted to evaluate the potential impact of Carbon Nanotubes (CNTs) on the anti-ageing properties of styrene–butadiene–styrene copolymer-modified asphalt (SBS PMA). Ageing Indexes (AIs) of conventional parameters, rheological parameters, and structural changes were employed to capture the changes in asphalt samples before and after ageing. For conventional parameters, AIs of viscosity at 60°C, penetration, and ductility were significantly decreased by the addition of CNTs. Rheological parameters were performed by Master curves and Han curves, including complex modulus (G*), elastic modulus (G′), viscous modulus (G″), and phase angle (δ). When the amount of CNTs below 0.5 wt.%, the AIs of G* in the low-frequency zone of mater curves for SBS PMA was smaller than the one without CNTs. On the other hand, when the amount of CNTs surpass 0.5 wt.%, the AIs of G* in high-frequency zone of mater curves for SBS PMA was large. CNTs provided unaged SBS PMA with lower sl...
TL;DR: In this article, the effect of the number of layers, various defects and functional groups on solubility parameter of graphene was studied through molecular dynamics (MD) simulation, and it was found that the defect and functional group had strong impact on the performance of graphene.
Abstract: The effect of the number of layers, various defects and functional groups on solubility parameter of graphene was studied through molecular dynamics (MD) simulation. We predigested three-component Hansen solubility parameters (δD, δP, δH) to two-component solubility parameters (δvdW, δele), and the two-component solubility parameters of graphene functionalized by different groups, such as hydroxyl, carboxyl, amino, methyl and epoxy with different grafting ratios were obtained. Further, the graphene/styrene butadiene rubber (SBR) composites were constructed to investigate the effect of functional groups and grafting ratios on components compatibility. It was found that the defects and functional groups had strong impact on solubility parameter of graphene, whereas the number of layers had a negligible effect. Two-component solubility parameters were proven to be able to predict compatibility of graphene and SBR. Additionally, the common effect of multifunctional groups on solubility parameter was also inve...
TL;DR: In this article, the effect of rectorite and carbon black (CB) on the aging performance of styrene-butadiene rubber (SBR), SBR/CB/rectorite nanocomposite, SBR, CB/SBR/R, and SBR-CB/R with the same total filler loading was analyzed.
TL;DR: In this paper, a mixture of crosslinked poly (acrylic acid) (PAA) and carboxymethyl cellulose hydrogels (CMC) was developed using styrene-butadiene rubber (SBR) as an efficient binder system to increase Li + diffusivity and adhesion strength.
TL;DR: In this article, the carboxylated acrylonitrile-butadiene rubber (xNBR) was modified with graphene oxide (GO) to synthesize the xNBR modified GO, which was adopted to reinforce styrene butadiene Rubber (SBR) nanocomposites through latex compounding method.
Abstract: In this paper, graphene oxide (GO) was modified with carboxylated acrylonitrile-butadiene rubber (xNBR) to synthesize the xNBR modified GO (xNBR-GO), which was adopted to reinforce styrene-butadiene rubber (SBR) nanocomposites through latex compounding method. The interaction between GO and xNBR was verified by Fourier transform infrared spectroscopy (FTIR) and Raman spectra. The dispersion of filler and morphology of xNBR-GO/SBR nanocomposites were characterized by X-ray diffraction (XRD) and scanning electron microscope (SEM). The mechanical properties, dynamic mechanical properties, thermal stability, thermal conductivity as well as solvent resistance of the xNBR-GO/SBR nanocomposites were also thoroughly studied. It was confirmed that xNBR could interact with GO through hydrogen bonding. The modification would improve the dispersion and reinforcement of filler. With the incorporation of 5 phr (parts per hundred rubber) filler, the tensile strength, tear strength and thermal conductivity of xNBR-GO/SBR nanocomposite were increased by 545%, 351% and 31.7%, respectively. In addition, the equilibrium solvent uptake was decreased by 31.8%, and the thermal stability was enhanced.
TL;DR: In this paper, the effect of fatty acids on the crystallization of natural rubber in small particles as a dispersoid was proved by tensile test of blend of a natural rubber and styrene butadiene rubber.
Abstract: Effect of the nanomatrix structure on mechanical properties of natural rubber was investigated in relation to the strain-induced crystallization. Structure of natural rubber was analyzed through Fourier transform infrared spectroscopy, wide-angle X-ray diffraction measurement and transmission electron microscopy. The nanomatrix of the non-rubber components was found to be inevitably formed in natural rubber, in which natural rubber particles linking to fatty acids were dispersed in the nanomatrix of the proteins and phospholipids. The nanomatrix disappeared after deproteinization of natural rubber with urea. Tensile strength and modulus of natural rubber were reduced by removal of the fatty acids and the proteins, which resulted in disappearance of the nanomatrix structure. The effect of fatty acids on the crystallization of natural rubber in small particles as a dispersoid was proved by tensile test of blend of natural rubber and styrene butadiene rubber. Copyright © 2016 John Wiley & Sons, Ltd.
TL;DR: In this paper, a trimethylolpropane tris(3-mercaptopropionate) (TMPMP) was carefully chosen to couple SiR and SSBR by in situ thiol-ene click reactions between mercapto groups of TMPMP and vinyl groups of SiR.
Abstract: The low surface energy of silicone rubber (SiR) makes it difficult to blend SiR with conventional rubbers such as solution styrene−butadiene rubber (SSBR) and natural rubber. In this study, to enhance the interface interaction between SiR and SSBR, trimethylolpropane tris(3-mercaptopropionate) (TMPMP) was carefully chosen to couple SiR and SSBR by in situ thiol-ene click reactions between mercapto groups of TMPMP and vinyl groups of SiR and SSBR. The reaction of TMPMP with SiR and SSBR was characterized via torque–time curves, element analysis, and the dissolving–swelling test. Accordingly, a two-step strategy was proposed to prepare SiR/SSBR composites. Transmission electron microscopy indicated that the two-step strategy reduced the phase domain size of the blend. The composite exhibited higher mechanical properties and lower hysteresis. The results would extend SiR applications.
TL;DR: In this article, mesoporous silica-reduced graphene oxide (mSiO2@rGO) hybrid nanosheets with sandwich structure were used for thermal conductivity enhancement.
TL;DR: In this article, pyrolytic carbon black (pCB) and N330 industrial carbon black were used to evaluate the performance of styrene-butadiene rubber (SBR).
TL;DR: Mansilla, Marcela Angela, and Mansilla as discussed by the authors presented a study on the use of artificial intelligence in the field of industrial robotics in the context of the Nacional de Tecnologia Industrial (NITI).
TL;DR: In this article, a series of full and semi-interpenetrating polymer network (IPN) membranes based on styrene butadiene rubber (SBR) and poly [methyl methacrylate] (PMMA) have been used for the synthesis of full IPN.
TL;DR: In this article, the reinforcement properties of SBR composites with silica, halloysite nanotubes (HNTs) and montmorillonite (MMT) were compared to understand the reinforcing behaviors of these fillers based on the results of SEM, DSC, DMA, etc.
TL;DR: In this article, the effect of nanoparticles on the thermal behavior of the SBR using thermal gravimetric analysis (TGA) was employed to investigate the capability of nanarticles to enhance mechanical behaviour of the compounds.
Abstract: In this research, rubber based nanocomposites with presence of nanoparticle has been studied. Styrene butadiene rubber (SBR)/nanocopper (NC) composites were prepared using two-roll mill method. Transmission electron microscope (TEM) and scanning electron microscope (SEM) images showed proper dispersion of NC in the SBR matrix without substantial agglomeration of nanoparticles. To evaluate the curing properties of nanocomposite samples, swelling and cure rheometric tests were conducted. Moreover, the rheological studies were carried out over a range of shear rates. The effect of NC particles was examined on the thermal behavior of the SBR using thermal gravimetric analysis (TGA). Furthermore, tensile tests were employed to investigate the capability of nanoparticles to enhance mechanical behavior of the compounds. The results showed enhancement in tensile properties with incorporation of NC to SBR matrix. Moreover, addition of NC increased shear viscosity and curing time of SBR composites.