高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (12): 1950.

• 研究快报 • 上一篇    下一篇

脂肪型超支化聚酯的端基改性研究

唐黎明, 张晓龙, 李伟, 刘德山   

  1. 清华大学化工系, 材料科学与工程研究院, 北京 100084
  • 收稿日期:2000-07-13 出版日期:2000-12-24 发布日期:2000-12-24
  • 通讯作者: 唐黎明(1967年出生),男,博士,副教授,主要从事精细及功能高分子研究.

Studies on Modification of End Groups of Aliphatic Hyperbranched Polyester

TANG Li-Ming, ZHANG Xiao-Long, LI Wei, LIU De-Shan   

  1. Department of Chemical Engineering, School of Material Science and Engineering, Tsinghua University, Beijing 100084, China
  • Received:2000-07-13 Online:2000-12-24 Published:2000-12-24

关键词: 超支化聚合物, 脂肪型聚酯, 端基, 改性

Abstract: Anew process was designed to modify the hydroxy capped aliphatic hyperbranched polyester, derived from2,2 bis(methylol) propionic acid and trimethylopropane in which the crude polyester reacted directly with maleic anhydride in bulk to transfer the hydroxy end groups to4-carboxy-2- butante end groups.The modified polyester was characterized by IR, 1H NMR, DSCand viscosity measurement.The results indicated that no side reaction took place during the modifying step and the conversion for the reaction was calculated to be88.9% based on the 1H NMRspectra.The Tgvalue shifted from320.3 Kfor the crude polymer to288.4 Kfor the modified polymer.Moreover, the UVcuring coating of the midified polyester showed high performances in hardness, adhensive and water resistance

Key words: Hyperbranched polymer, Aliphatic polyester, End groups, Modification

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