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Styrene-butadiene

About: Styrene-butadiene is a research topic. Over the lifetime, 5568 publications have been published within this topic receiving 62099 citations. The topic is also known as: styrene-butadiene rubber & SBR.


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01 Jan 2011
TL;DR: An overview of the researches which have been conducted on polymer modified asphalt emulsions using various types of polymer and performance of its application can be found in this paper, where the authors present an overview of their work.
Abstract: In road paving industry, asphalt emulsion is used for cold mix application such as chip seal, slurry seal, microsurfacing, cold recycled mixture and etc. Asphalt emulsion has several advantages compared to normal asphalt such as eco-friendly, easy to handle at ambient temperature and energy saving material because it does not need any heating process in its application. The history of asphalt emulsions and its application in road construction begin in the early part of 20 century. Due to the increasing number of traffic loads and volume, the used of normal asphalt emulsion is not enough to prevent the pavement from deterioration. Nowadays, polymer modified asphalt technology is used by researcher and manufacturer in asphalt emulsion to improve the performance of asphalt emulsion. Various types of polymers can be used to prepare polymer modified asphalt emulsion such as styrene butadiene styrene (SBS) block copolymer, ethylene vinyl acetate (EVA), polyvinyl acetate (PVA), styrene butadiene rubber (SBR) latex, epoxy resin and natural rubber latex. Polymer can be added into asphalt emulsion in three ways: 1) pre-blending method, 2) simultaneous-blending method and 3) post-blending method. The blending method has important influence on polymer network distribution and will affect the performance of polymer modified asphalt emulsions. The absence of an agreed protocol has allowed various techniques to be used by testing laboratories in order to obtain asphalt emulsion residue. This paper presents an overview of the researches which have been conducted on polymer modified asphalt emulsions using various types of polymer and performance of its application.

28 citations

Journal ArticleDOI
TL;DR: In this article, the crack resistance curve (R) concept of elastic-plastic fracture mechanics was used to determine the fracture mechanics parameters as resistance against stable crack initiation and propagation.
Abstract: Fracture behavior of binary blends comprising styrene-butadiene block copolymers having star and triblock architectures was studied by instrumented Charpy impact test. The toughness of the ductile blends was characterized by the dynamic crack resistance concept (R curves). While the lamellar thermoplastic star block copolymer shows elastic behavior (small scale yielding and unstable crack growth), adding 20 wt% of a triblock copolymer (thermoplastic elastomer, TPE) leads to a strong increase in crack toughness. The stable crack propagation behavior of these blends was described by the crack resistance curve (R) concept of elastic-plastic fracture mechanics. This concept allows the determination of fracture mechanics parameters as resistance against stable crack initiation and propagation. Two brittle to tough transitions (BTT) are observed in the binary block copolymer blend: BTT1 at 20% TPE and BTT2 at about 60% TPE. The strong increase of toughness at 60 wt% TPE indicates a ‘tough/high-impact’ transition as a measure for the protection against stable crack initiation.

27 citations

Journal ArticleDOI
TL;DR: In this paper, a non-functionalized solution styrene-butadiene rubber (SSBR) was used to investigate effect of the functional group of silanes on the silica modification and properties.
Abstract: Silica compounds were prepared using non-functionalized solution styrene-butadiene rubber (SSBR) to investigate effect of the functional group of silanes on the silica modification and properties o...

27 citations

Journal ArticleDOI
TL;DR: In this article, the Mooney scorch times of three rubber blends [epoxidized natural rubber (ENR) 50/SMR L, ENR 50/styrene butadiene rubber (SBR), and Standard Malaysian Rubber SMR L/SBR] were studied in the temperature range of 120-160°C using an automatic Mooney viscometer.
Abstract: The Mooney scorch times of three rubber blends [epoxidized natural rubber (ENR) 50/SMR L, ENR 50/styrene butadiene rubber (SBR), and Standard Malaysian Rubber SMR L/SBR] were studied in the temperature range of 120-160°C using an automatic Mooney viscometer. N-Cyclohexyl-2-benzothiazyl sulfenamide was used as the accelerator, and the rubber formulation was based on the conventional vulcanization system. Results for the blends investigated indicate that a negative deviation of scorch time from the interpolated value was observed, especially for temperatures lower than 130°C. This observation was attributed to the induction effect of the ENR 50 in the ENR 50/SMR L and ENR 50/SBR blends to produce more activated precursors to crosslinks, thus enhancing interphase crosslinking. To a lesser extent, SMR L also exhibited such an induction effect in the SMR L/SBR blend. At 120°C, maximum induction effect occurred at around a 40% blend ratio of ENR 50 and SMR L in the respective blends. For the filled stock at 140°C, carbon black exhibited less effect on the scorch property of the blends compared to silica.

27 citations

Journal ArticleDOI
TL;DR: In this paper, the impact strength of polypropylene was investigated using wide-angle X-ray diffraction (WAXD), POM, SEM, differential scanning calorimetry (DSC), and thermogravimetric analysis.
Abstract: The mechanical properties and morphologies of PP/SBR/SiO2 nanocomposites have been studied using mechanical testing, wide-angle X-ray diffraction (WAXD), polarizing optical microscopy (POM), scanning electron microscopy (SEM), differential scanning calorimetry (DSC), and thermogravimetric analysis (TGA). The mechanical properties of neat polypropylene can be considerably improved by synergistically filling with SiO2 and SBR nanoparticles, especially for the notched Izod impact strength. The results from the WAXD, POM, SEM, DSC, and TGA measurements reveal that: (i) the β-phase crystal structure of PP is formed when SiO2 and SBR nanoparticles are synergistically filled with polypropylene and its formation plays a role for the enhancement of the impact strength for PP/SBR/SiO2 nanocomposites; (ii) the dispersion of SiO2 and SBR nanoparticles in PP/SBR/SiO2 composites is homogeneous, indicating that synergistic incorporating method decreases the aggregation of nanoparticles and thus increases the sites for dissipation of shock for impact energy in PP/SBR/SiO2 nanocomposites; (iii) the thermal analysis shows high thermal stability for the PP/SBR/SiO2 nanocomposites. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008

27 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023118
2022229
2021159
2020239
2019313
2018348