中国化学前沿2008，Vol.3Issue(3) ：298-303.

Synthesis and characterization of three-arm star-shaped polyethylene glycols with 1,1,1-trihydroxmethylpropane as cores

Kangcheng WANG Wei HUANG Yongfeng ZHOU Deyue YAN
中国化学前沿2008，Vol.3Issue(3) ：298-303.
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Synthesis and characterization of three-arm star-shaped polyethylene glycols with 1,1,1-trihydroxmethylpropane as cores

Kangcheng WANG 1Wei HUANG 2Yongfeng ZHOU 2Deyue YAN2
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作者信息

  • 1. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;Department of Chemistry, Huzhou Teachers College, Huzhou 313000, China
  • 2. School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
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Abstract

A small molecule core (TMP,SK3) with three terminal carboxyl groups was synthesized successfully by the reaction of 1,1,1,trihydroxymethylpropane with the excessive sebacic acid diacetic anhydride (SK). Then, the core molecule was used as a coupling agent to condensate with polyethylene glycols (PEG) of different molecular weights or polyethylene glycol monomethyl ether (PEGm) in the presence of stannous octoate as catalyst and diphenyl ether as an azeotropic agent to remove water. Thus, the three,arm star,shaped PEGs was obtained successfully and characterized by IH,NMR,DSC, GPC and XRD etc. DSC measurements indicate that the crystallizing and the melting temperatures of the three,arm star,shaped PEGs were different from those of the corresponding linear PEG because the existence of TMP,SK3 altered its crystallizing velocity and perfect degree of crystallization.

Key words

star-shaped polymer/1,1,1-trihydroxymethylpropane/sebacic acid diacetic anhydride/PEG

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基金项目

国家重点基础研究发展计划(973计划)(2005CB623803)

国家重点基础研究发展计划(973计划)(2007CB808000)

国家自然科学基金(50233030)

浙江省自然科学基金 (Y404348)

出版年

2008
中国化学前沿
高等教育出版社

中国化学前沿

ISSN：1673-3495
参考文献量2
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