文献类型：期刊文献

英文题名：Structure analysis of polyether-based thermoplastic polyurethane elastomers by FTIR, H-1 NMR and C-13 NMR

作者：Tang, Qiheng[1] Gao, Kezheng[2]

第一作者：唐启恒

通信作者：Gao, KZ[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China;[2]Zhengzhou Univ Light Ind, Sch Mat & Chem Engn, Zhengzhou 450002, Henan, Peoples R China

年份：2017

卷号：22

期号：7

起止页码：569-574

外文期刊名：INTERNATIONAL JOURNAL OF POLYMER ANALYSIS AND CHARACTERIZATION

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000413985100001)】；

基金：This research was supported by the Cooperation Project of Forestry Science and Technology from Zhejiang Province and Chinese Academy of Forestry.

语种：英文

外文关键词：Fourier transformed infrared spectroscopy; gel permeation chromatography; nuclear magnetic resonance spectroscopy; polyurethane

摘要：One kind of unknown structure sequence and composition ratio of thermoplastic polyurethane elastomers were characterized by nuclear magnetic resonance spectroscopy, Fourier transformed infrared spectroscopy, and gel permeation chromatography (GPC). The results showed that the polyurethane (PU) was obtained from poly(tetramethylene glycol) (PTMG) as soft segment, 1,4-butanediol (BDO) as chain extender, and 4,4-methylenediphenyl diisocyanate (MDI) as hard segment. Furthermore, the composition ratio of MDI:PTMG:BDO was 2.07:1.22:1.00. At last, the molecular weight of PU was determined by GPC, and the number average molecular weight (M-n) and weight average molecular weight (M-w) are 63,300 and 133,800gmol(-1), respectively.