波谱学杂志 ›› 2016, Vol. 33 ›› Issue (3): 432-441.doi: 10.11938/cjmr20160308

• 研究论文 • 上一篇    下一篇

两种聚醚改性有机硅表面活性剂的NMR数据分析

张彬锋, 朱雪荣   

  1. 亨斯迈化学研发中心(上海)有限公司, 上海 200245
  • 收稿日期:2015-10-19 修回日期:2016-07-11 出版日期:2016-09-05 发布日期:2016-09-05
  • 通讯作者: 张彬锋(1979-),男,博士,研究方向为波谱解析,电话:021-33572727,E-mail:zbf2004@hotmail.com. E-mail:zbf2004@hotmail.com

NMR Analyses of Two Polyether Modified Organic Silicone Surfactants

ZHANG Bin-feng, ZHU Xue-rong   

  1. R & D Center of Chemistry, Huntsman Asia Pacific (Shanghai) Co., Ltd., Shanghai 200245, China
  • Received:2015-10-19 Revised:2016-07-11 Online:2016-09-05 Published:2016-09-05

摘要:

运用液体核磁共振(NMR)技术(包括1H NMR、DEPT135、13C qNMR、1H-1H COSY、1H-13C HSQC、1H-13C HMBC、29Si qNMR和1H-29Si HMBC)对两种有机硅表面活性剂进行了化学结构表征,对所得波谱数据进行了较为全面的指认.结果表明一维1H NMR、13C NMR和29Si NMR,与二维NMR方法结合使用可以准确区分这两种有机硅表面活性剂的结构:样品A和样品B均为聚乙二醇改性的聚二甲基硅氧烷有机硅表面活性剂;A具有线型ABA结构,平均分子量约为1 967;B具有梳型BAB结构,平均分子量约为7 191.

关键词: 液体核磁共振(liquid NMR), 结构鉴定, 1H-29Si HMBC, 有机硅表面活性剂, 硅氧烷和聚氧化乙烯共聚物

Abstract:

Two unknown polyether modified organic silicone surfactants were studied by NMR techniques (i.e., 1H NMR, DEPT135, 13C qNMR, 1H-1H COSY, 1H-13C HSQC, 1H-13C HMBC, 29Si qNMR and 1H-29Si HMBC). The NMR signals were assigned. The results indicated that the two silicone surfactants could be distinguished from each other by 1H-29Si HMBC. The main component of sample A was polyethylene oxide modified polydimethylsiloxane surfactant with a linear ABA structure, and sample B had a comb BAB structure. The average molecular weight of the two compounds was 1 967 and 7 191, respectively.

Key words: liquid NMR, structural elucidation, 1H-29Si HMBC, silicone surfactants, siloxane polyalkyleneoxide copolymer

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