نتایج جستجو برای: styrene butadiene styrene

تعداد نتایج: 8562  

Journal: :Batteries 2022

Flexible power sources such as batteries are essential to realize wearable and conformable electronic devices. The mechanical stability of the electrodes plays an important role in determining overall flexibility battery. Styrene block copolymers-based elastomers have potential be used binder materials for retaining their structural integrity under flexing during regular use. In this work, we d...

Journal: :Advances in Materials Science and Engineering 2021

The weak connection performances between the waterproof adhesive layer, bridge deck, and asphalt pavement are important factors that cause deck slippage upheaval affect safety durability of bridge. In this paper, styrene-butadiene-styrene- (SBS-) modified asphalt, SBS-emulsified rubber-modified AMP-100 materials selected to study performance layer in seasonal frozen region. shear strength bond ...

Journal: :Applied and environmental microbiology 1998
S Panke B Witholt A Schmid M G Wubbolts

In order to design a biocatalyst for the production of optically pure styrene oxide, an important building block in organic synthesis, the metabolic pathway and molecular biology of styrene degradation in Pseudomonas sp. strain VLB120 was investigated. A 5.7-kb XhoI fragment, which contained on the same strand of DNA six genes involved in styrene degradation, was isolated from a gene library of...

2012
Joshua S. Silverstein Brendan J. Casey Mary E. Natoli Benita J. Dair Peter Kofinas

Diblock and triblock copolymers of poly(styrene)-block-poly(1,2-butadiene) (PS/PB) and PS/PB/PS were modified by photochemical thiol−ene chemistry to process selected functional nanopatterned polymers, with reaction completion in 1 h. PB molecular weight (MW) and thiol−ene ratios were systematically varied based on a model monomer, boc-cysteamine, to determine the efficiency of the reaction. Th...

Journal: :Critical reviews in toxicology 1994
F J Roe

Styrene is efficiently metabolized to styrene oxide, which is itself readily detoxified by the same enzymes as those involved in the metabolism of various foodstuffs. Styrene oxide, like many intermediate metabolites of foodstuffs, is genotoxic and, if introduced directly into the stomachs of rodents in high doses/concentrations, gives rise to cancers of the forestomach. Exposing mice to doses ...

Journal: :مهندسی عمران فردوسی 0
عباس حق اللهی امیر طریقت محمد شفیعی زاده

this paper deals with the interfacial effects of silica fume (sf) and styrene-butadiene polymer (sbr) on compressive strength of concrete. analyzing the compressive strength results of 32 concrete mixes performed over two water-binder ratios (0.35, 0.45), four percentages replacement of silica fume (0%, 5%, 7.5%, 10%) and four percentages of sbr (0%, 5%, 10%, 15%) were investigated. a mathemati...

Journal: :journal of nanostructures 2014
d. ghanbari m. salavati-niasari s. karimzadeh s. gholamrezaei

bismuth sulfide nano-rods and nano-flowers were synthesized via a hydrothermal reaction at a relatively low temperature. thioglycolic acid is used as sulfur source and capping agent simultaneously. bi2s3 nanostructures were then added to acrylonitrile-butadiene-styrene (abs) copolymer. the thermal stability behavior of abs filled with bismuth sulfide nano-rods were investigated by thermogravime...

Journal: :Toxicological sciences : an official journal of the Society of Toxicology 1999
D E Hynes D B DeNicola G P Carlson

Styrene is pneumotoxic in mice. It is metabolized by pulmonary microsomes of both mouse and rat to styrene oxide (SO), presumed to be the toxic metabolite of styrene, and known to be genotoxic. To determine which pulmonary cell types are responsible for styrene metabolism, and which cytochromes P450 are associated with the bioactivation of styrene, we isolated enriched fractions of mouse and ra...

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