Development of new biodegradable cationic ionomers

2014 Fiscal Year Final Research Report

• Project/Area Number: 24550136
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Polymer chemistry
• Research Institution: Hiroshima University
• Principal Investigator: NAKAYAMA Yuushou 広島大学, 工学(系)研究科(研究院), 准教授 (20273576)
• Co-Investigator(Kenkyū-buntansha): SHIRAHAMA Hiroyuki 広島大学, 産学・地域連携センター, 准教授 (60127660)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Keywords: アイオノマー / 脂肪族ポリエステル / ポリウレタン / ポリ乳酸 / ポリ(ε-カプロラクトン)

Outline of Final Research Achievements

The ring-opening polymerization of lactide by using a diol with a tertiary amino group followed by chain-extension with diisocyanate gave poly(lactide-urethane)s with equally spaced tertiary amino groups. Treatment of the poly(lactide-urethane)s with iodomethane afforded the polymers with quaternary ammonium groups. Ionization of the polymers was found to enhance their tensile modulus and to decelerate their biodegradation. Similar poly(ε-caprolactone-urethane)s with quaternary ammonium groups and poly(lactide-urehtane)s with carboxylate groups were synthesized and their properties were evaluated.

Free Research Field

高分子化学