Characterization and Effect of Covalently Grafted Benzoic Acid on the Low Temperature Flexibility and Water Vapor Permeability of a Polyurethane Copolymer |
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Authors: | Yong-Chan Chung Su Hyeon Jo Ha Youn Kim |
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Affiliation: | 1. Department of Chemistry, The University of Suwon, Hwaseong, Korea;2. School of Nano Engineering, Inje University, Gimhae, Korea |
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Abstract: | Polyurethane was grafted with benzoic acid (BA series) or a phenyl group (C series) to compare the impact of the grafted groups on water contact angle, tensile strength, shape memory, and low temperature flexibility. Benzoic acid is different from a phenyl group because it has both a rigid phenyl ring and a carboxyl group. The tensile strengths of the BA and C series substantially increased compared to that of the unmodified polyurethane. The BA series with the grafted benzoic acid exhibited excellent low temperature flexibility compared to the C series with the grafted phenyl group. |
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Keywords: | Benzoic acid low temperature flexibility polyurethane shape recovery |
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