化工进展

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异端基遥爪聚乙二醇的合成

杨 钊,郝建原   

  1. 电子科技大学微电子与固体电子学院,电子薄膜与集成器件国家重点实验室,四川 成都 610054
  • 出版日期:2012-10-05 发布日期:2012-10-05

Synthesis of hetero telechelic poly(ethylene glycol)

YANG Zhao,HAO Jianyuan   

  1. State Key Laboratory of Electronic Thin Films and Integrated Devices,School of Microelectronics and Solid-state Electronics,University of Electronic Science and Technology of China,Chengdu 610054,Sichuan,China
  • Online:2012-10-05 Published:2012-10-05

摘要: 采用3种新式引发剂,即2-(苄氧基)乙醇钾、2-(四氢-2H-吡喃-2-氧基)乙醇钾、单丙烯基乙二醇钾引发环氧乙烷阴离子开环聚合,反应条件为25 ℃、48 h、醇与萘钾摩尔比例1∶1,得到3种异端基遥爪聚乙二醇。以2-(苄氧基)乙醇钾引发聚合所得产物为起始物,经一系列反应,得到两种两端均为活性基团的异端基遥爪聚乙二醇,这种方法具有普适性。通过1HNMR及GPC手段,表征了产物的结构、分子量及分子量分布。结果表明可以得到高产率、分子量可控且分布窄的异端基遥爪聚乙二醇。

关键词: 环氧乙烷, 异端基遥爪聚乙二醇, 合成

Abstract: Three hetero telechelic poly(ethylene glycol)s were obtained via anionic ring-opening polymerization of ethylene oxide using three new initiators :2-(benzyloxy)ethanol potassium、2-(tetrahydro-2H-pyran-2-yloxy)ethanol potassium,2-allyloxyethanol potassium. The polymerization conditions were as follows:25 ℃,48 h,with equal ethanol and potassium naphthalene feeds. Using the polymerized product from 2-(benzyloxy)ethanol potassium as the start substance,two hetero telechelic poly(ethylene glycol)s with two functional end groups were synthesized through a series of reactions,the method was widely applicable to synthesizing hetero telechelic poly(ethylene glycol)s. The chemical structure,weight average molecular weight and distribution of the resultant products were characterized by 1H-NMR and GPC. The hetero telechelic poly(ethylene glycol)s that have high yields and controlled molecular weights and molecular weight distributions were obtained.

Key words: ethylene oxide, hetero telechelic poly(ethylene glycol), synthesis

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