文献类型：期刊文献

英文题名：Synthesis and characterization of an isocyanate-terminated hyperbranched polymer and its waterborne study

作者：Zhang, Jie[1];Tian, Hui-Ting[1];Zhang, Yu-Ting[1];Hu, Chun-Pu[1];Zhang, Zhi-Ping[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai 200237, Peoples R China

年份：2021

卷号：28

期号：5

外文期刊名：JOURNAL OF POLYMER RESEARCH

收录：;EI(收录号：20211610216429);WOS:【SCI-EXPANDED(收录号:WOS:000681499400001)】；

基金：This study was supported by Shanghai Leading Academic Discipline Project (No.B 502).

语种：英文

外文关键词：Isocyanate-terminated; Hyperbranched; Water-dispersible; 2D NMR

摘要：An isocyanate-terminated hyperbranched polymer (HBI) was successfully synthesized by reacting hyperbranched polyester (Boltorn(TM) HB-20) with isophorone diisocyanate (IPDI). Gel permeation chromatography (GPC) was used to monitor the molecular weight and its distribution changes during the synthesis. The structure and composition of IPDI were characterized by H-1 and C-13 nuclear magnetic resonance (NMR) spectroscopy. The structure of HBI was confirmed by one-dimensional H-1, C-13 NMR, and distortionless enhancement by polarization transfer (DEPT) NMR spectroscopy as well as two-dimensional heteronuclear multiple bond coherence (2D-HMBC) and heteronuclear single quantum coherence (HSQC) NMR spectroscopy. Furthermore, HBI was reacted with methoxypolyethylene glycols (MPEG) to obtain a water-dispersible polyisocyanate with hyperbranched structure.