9 August 2013 Water soluble and heat resistant polymers by free radical polymerization of lactic acid-based monomers
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Proceedings Volume 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering; 87931T (2013) https://doi.org/10.1117/12.2026120
Event: Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 2013, Gold Coast, Australia
Abstract
Tactic heat resistant polymer was prepared by free radical polymerization of lactic acid-based monomers, i.e. chiral 2-isopropyl-5-methylene-1,3-dioxolan-4-ones (1). The polymerization of 1 proceeded smoothly without ring-opening to give a polymer with high isotacticity (mm) of 29.7~100% and glass transition temperature (Tg) of 172~213°C. 1 also showed high reactivity in the copolymerization with styrene and methyl methacrylate, and the incorporation of 1 unit in the copolymer structure increased Tg of each polymer. In addition, hydrolysis of poly(1) produced a new type of water soluble poly(lactic acid), i.e. poly(α-hydroxy acrylate), and poly(α-hydroxy acrylate-co-divinyl benzene) hydrogel absorbed water as high as 1000 times of the original polymer weight.
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Hitoshi Tanaka, Tatsuya Kibayashi, Miki Niwa, "Water soluble and heat resistant polymers by free radical polymerization of lactic acid-based monomers", Proc. SPIE 8793, Fourth International Conference on Smart Materials and Nanotechnology in Engineering, 87931T (9 August 2013); doi: 10.1117/12.2026120; https://doi.org/10.1117/12.2026120
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