Synthesis and Characterization of Novel Polymers Containing Sulfur from 3-Mercaptopropionic Acid
作者： Yong-Kyung Lee , Kenjiro Onimura , Hiromori Tsutsumi , Tsutomu Oishi
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摘要: Three new monomers, 2-hydroxyethoxycarbonylethyl methoxycarbonylethyl sulfide (HEMS), 2-hydroxyethoxycarbonyl (2´-methyl) ethyl (HMMS), and 3, 3´-dithiodiethylcarboxy allyl (DTCA) were synthesized from 3-mercaptopropionic acid (3-MPA) or methyl 3-mercaptopropionate (M3-MP). Polycondensations of HEMS HMMS performed with several metal acetates as catalysts to obtain the corresponding polythioethers number average molecular weights (Mn) up 6.4×103. Radical polymerizations DTCA carried out in bulk at 110°C polymers having groups side chain. Polymerizations ethylene diamine (EDA) hexamethylene (HDA) under various conditions polymers. Decomposition temperatures (Td) glass transition (Tg) 146—252°C -54—-1°C, respectively. Crystallinity obtained by EDA HDA was 25—49%
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