Results 301 to 310 of about 225,466 (357)

Heparinized styrene‐butadiene‐styrene elastomers

Journal of Biomedical Materials Research, 1979
AbstractA heparinized high‐strength elastomer has been developed which is potentially useful as a nonthrombogenic vascular prosthesis. A surface hydroxylated styrene‐butadiene‐styrene (SBS) block copolymer with at least 40% extent of reaction after glow‐discharge cleaning was coated with a 20% acetylated polyvinyl alcohol/heparin mixture containing ...
M F, Goosen, M V, Sefton
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Cytogenetic effects of styrene and styrene oxide

Mutation Research/Genetic Toxicology, 1978
Styrene and styrene oxide induce various cytogenetic effects, similar in both human lymphocytes in vitro and onion root-tip cells in vivo. Styrene appears to cause chromosome breakage in both systems, and in Allium it shows a strong c-mitotic effect. Styrene oxide, on the other hand, seems to destroy the tertiary folding of the chromatin.
K, Linnainmaa, T, Meretoja, M, Sorsa, H, Vainio   +3 more
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Mutagenic effects of styrene and styrene oxide

Mutation Research/Genetic Toxicology, 1979
Abstract Styrene and its presumed metabolite styrene oxide were tested in the Salmonella/liver-microsome test on the tester strains TA1535, TA1537, TA1538, TA98 and TA100 of Salmonella typhimurium . Styrene oxide, in the concentration range 1–10 μmoles per plate, was mutagenic on TA1535 and TA100, both in the absence and the presence of a rat-liver ...
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Styrenics: polystyrene and styrene copolymers

1998
The first modification of rubber by incorporation of polystyrene (PS) is credited to Francis Edward Matthews, who during the years 1911-1913 (Figure10.1) received several international patents for the manufacture of lacquers and ‘articles that are normally made of hard rubber, celluloid, vulcanite, ebonite, glass, wood and similar materials’.
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Scandium Half-Metallocene-Catalyzed Syndiospecific Styrene Polymerization and Styrene−Ethylene Copolymerization:  Unprecedented Incorporation of Syndiotactic Styrene−Styrene Sequences in Styrene−Ethylene Copolymers

Journal of the American Chemical Society, 2004
On treatment with 1 equiv of [Ph3C][B(C6F5)4], the scandium half-sandwich bis(alkyl) complex (C5Me4SiMe3)Sc(CH2SiMe3)2(THF) showed extremely high activity (up to 1.36 x 104 kg of sPS/(mol Sc.h)) and syndiospecificity (rrrr > 99%) for the polymerization of styrene at room temperature in toluene.
Yunjie, Luo, Jens, Baldamus, Zhaomin, Hou   +2 more
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Mutagenicity of styrene and styrene oxide

Mutation Research/Fundamental and Molecular Mechanisms of Mutagenesis, 1977
Abstract Incubation of S. typhimurium strain TA 1535 with styrene increased the number of his + revertants/plate in presence of a fortified S9 rat-liver fraction. Styrene was also highly cytotoxic for Salmonella cells. Styrene oxide, the presumed first metabolite, had a mutagenic effect towards strains TA 1535 and TA 100 both with and without ...
C. de Meester, F. Poncelet, M. Roberfroid, J. Rondelet, M. Mercier   +4 more
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Compatibility effect of radiation‐grafting‐functionalized styrene–butadiene–styrene on polyamide 6/styrene–butadiene–styrene blends

Journal of Applied Polymer Science, 2008
AbstractStyrene–butadiene–styrene (SBS) was grafted with dibutyl maleate (DBM), methacrylic acid (MAA), or maleic anhydride (MAH) by 60Co γ‐rays. The grafted SBS was blended with polyamide 6 (PA6). The compatibility of the PA6/SBS blends was studied with scanning electron microscopy and rheological measurements.
Yan Zhang, Yintao Li, Sufang Zhao, Leidong Xie, Kanglong Sheng   +4 more
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Ferredoxin reductase catalyzes styrene oxidation to styrene oxide

Experientia, 1982
The flavoprotein ferredoxin reductase catalyzed the oxidation of styrene to styrene oxide in the presence of NADPH. This reaction was inhibited by the addition of catalase and superoxide dismutase. The addition of the nonheme iron protein ferredoxin partially inhibited styrene oxidation.
G, Belvedere, D, Blezza, L, Cantoni
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Atomically dispersed iridium on MgO(111) nanosheets catalyses benzene–ethylene coupling towards styrene

Nature Catalysis, 2021
Pengxin Liu, Xing Huang, Deni Mance
exaly  

Carbocationic Polymerization: Styrene and Substituted Styrenes

1989
Although the cationic polymerization of styrene and substituted styrenes (referred to here collectively as ‘styrenes’) belongs to one of the oldest and most studied polymerization systems, it is not yet completely understood. In this chapter we shall try to review selectively and critically the existing literature on the cationic polymerization of ...
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