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.

A hematology survey of workers at a styrene-butadiene synthetic rubber manufacturing plant

Abstract: A previous epidemiologic study of the U.S. rubber industry indicated that there has been an excess of leukemia and lymphoma mortality among hourly workers at one styrene-butadiene rubber manufacturing plant. This investigation was a combined industrial hygiene and hematology cross-sectional survey at the same plant. The objectives of the survey were to quantify exposure levels for styrene, butadiene, benzene and toluene, and to relate these levels to hematologic variation. Personal air samples and blood specimens were obtained from 157 production workers. All exposure levels for the four chemicals assayed were well below recommended standards. The highest mean styrene (13.67 ppm) and butadiene (20.03 ppm) concentrations were found in the Tank Farm area; in all other departments the mean levels for the four chemicals were less than 2 ppm. The Tank Farm workers had slightly lower levels of circulating erythrocytes, hemoglobin, platelets and neutrophils, and slightly higher mean corpuscular red cell volumes ...

Microstructure and properties of styrene‐butadiene rubber based nanocomposites prepared from an aminosilane modified synthetic lamellar nanofiller

Abstract: In this work, a novel nanocomposite series based on styrene-butadiene rubber (SBR latex) and alpha-zirconium phosphate(α-ZrP) lamellar nanofillers is successfully prepared The α-ZrP lamellar filler is modified at the cation exchange capacity by γ-aminopropyltrimethoxysilane and the filler surface modification is first discussed A significant improvement of the mechanical properties is obtained by using the surface modified nanofillers However, no modification of the gas barrier properties is observed The impact of addition of bis(triethoxysilylpropyl)tetrasulfide (TESPT) as coupling agent in the system is discussed on the nanofiller dispersion state and on the filler–matrix interfacial bonding Simultaneous use of modified nanofillers and TESPT coupling agent is found out with extraordinary reinforcing effects on both mechanical and gas barrier properties and the key factors at the origin of the improvement of these properties are identified © 2013 Wiley Periodicals, Inc J Polym Sci, Part B: Polym Phys 2013, 51, 1051–1059

Preparation of styrene-butadiene copolymer

Abstract: PURPOSE: To prepare the titled copolymer having improved rolluing friction resistance and breaking characteristics, by copolymerizing styrene with butadiene in the presence of an organic Li compound, and then carrying out the polymerization adding a conjugated diene to the copolymer just before the coupling reaction with a specific tin compound. CONSTITUTION: Styrene and 1,3-butadiene are copolymerized in a hydrocarbon solvent such as cyclohexane, in the presence of an ether compound (e.g. tetrahydrofuran) or a tertamine using 0.2W20m-mole of an organic Li compound (e.g. n-butyl Li) per 100g of the monomers. After the copolymerization, 0.5W200mol, based on 1mol of the organic Li compound, of a conjugated diene (e.g. isoprene) is added to the reaction system and polymerized. The product is incorporated with a tin compound of formulaIor II (R is alkyl, etc.; Z is halogen, X and a are 0W2; n is 1W10; y is 2W4; b is 1W3), e.g. CH 3 SnCl 3 , and subjected to the coupling reaction to obtain the objective copolymer. The amount of halogen atom of the tin compound is 0.1W3 equivalent per 1 atom equivalent of Li. COPYRIGHT: (C)1982,JPO&Japio