AIM This study evaluated the mortality experience of workers from the styrene-butadiene industry. METHODS The authors added seven years of follow up to a previous investigation of mortality among 17 924 men employed in the North American synthetic rubber industry. Analyses used the standardised mortality ratios (SMRs) to compare styrene-butadiene rubber workers' cause specific mortality (1943...

Abstract Component ratio change is considered to be the main reason leading deterioration of asphalt properties, but there are few studies on aging mechanism from perspective modifier molecules. To reveal styrene–butadiene–styrene block copolymer (SBS)/styrene butadiene rubber (SBR) compound-modified asphalt, micro in process was studied by combining molecular dynamics (MD) and Fourier transfor...

OBJECTIVE To review the epidemiologic literature on styrene and cancer. METHODS We reviewed studies of workers exposed to styrene in manufacturing and polymerization, in the reinforced plastics industry, and in styrene-butadiene rubber production. We also reviewed studies of workers monitored for styrene exposure, studies of environmental exposure, community-based case-control studies of lymp...

To date, epidemiologic research on 1,3-butadiene has consisted of cohort mortality studies of workers in the styrene-butadiene rubber (SBR) and butadiene monomer industries. These studies have been extremely useful both in defining the focus on human health effects to the lymphopoietic cancers and in providing a perspective on which to evaluate the available animal models for human risk assessm...

Abstract The environmental impact of rubber waste can be reduced by extending the lifetime products. It achieved developing graphene/rubber nanocomposites with good abrasion resistance. In this paper, we investigated how mixing technologies influence mechanical properties rubber. We added various amounts (0, 1, 5 and 10 phr) graphite graphene to mixtures using a two-roll mill, an internal mixer...

In order to determine the chemical composition distribution (CCD) of styrene-butadiene copolymers, gradient polymer elution chromatography has been performed. The separation is mainly based on differences in solubility among the copolymer molecules with different chemical composition. The solubility of a copolymer is dependent on the following parameters: temperature, type of solvent/non-solven...

In this study, a chemical dissolution treatment was used to recover rubber and carbon black (CB) from truck tire scrap, with gas oil acting as the solvent 4-Hydroxy-TEMPO catalyst for reactions. Montmorillonite clay separate solution CB other non-dissolved additives. The recovered were characterized together original scrap sample by XRD, SEM, BET thermal analysis, well FTIR 1H NMR spectral anal...

This work investigates the industrial production of styrene-butadiene rubber in a continuous reactor train, and proposes a soft sensor for online monitoring of several processes and polymer quality variables in each reactor. The soft sensor includes two independent artificial neural networks (ANN). ThefirstANNestimatesmonomer conversion, solid content, polymer production, average particle diame...