高等学校化学学报

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新型X光显影含糖聚合物的合成与表征

王湘, 耿雪, 叶霖, 张爱英, 冯增国   

  1. 北京理工大学材料科学与工程学院, 北京 100081
  • 收稿日期:2007-07-12 修回日期:1900-01-01 出版日期:2008-02-10 发布日期:2008-02-10
  • 通讯作者: 冯增国

Preparation and Characterization of a Kind of New Radiopaque Sugar-containing Terpolymers

WANG Xiang, GENG Xue, YE Lin, ZHANG Ai-Ying, FENG Zeng-Guo*   

  1. School of Materials Science and Engineering, Beijing Institute of Technology, Beijing 100081, China
  • Received:2007-07-12 Revised:1900-01-01 Online:2008-02-10 Published:2008-02-10
  • Contact: FENG Zeng-Guo

摘要: 用自由基本体聚合方法合成了一种新型的X光显影含糖三元共聚物P(2-IEMA-AcGEMA-MMA). 探讨了单体配比和链转移剂用量对聚合物分子量及其分布的影响, 并用FTIR, 1H NMR和GPC对其结构进行了表征. 研究结果表明, 改变单体配比对聚合物的分子量几乎不产生影响, 但减少链转移剂用量时, 可明显增加三元共聚物的分子量. 聚合物分子量分布一般在2~3之间, 符合自由基聚合产物分子量分布的一般规律. 聚合物具有良好的显影性, 显影效果随着样品厚度的增加而增强.

关键词: X光显影聚合物, 聚甲基丙烯酸甲酯, 含糖聚合物, 三元共聚物

Abstract: A kind of new radiopaque sugar-containing terpolymers of poly[2-(2-triiodobenzoyl)oxoethyl me-thacrylate-co-2-(2',3',4',6'-tetra-O-acetyl-β-D-glucopyranosyloxy) ethyl methacrylate-co-methyl methacrylate] were synthesized via the radical terpolymerization in bulk. A study was carried out towards the effect of changing the monomer feed ratio and the content of the chain transfer agent on the molecular weight and mole-cular weight distribution of the terpolymers. Their detail chemical composition and structure were characterized via FTIR, 1H NMR and GPC analyses. The feed ratio change shows a little effect on the terpolymer molecular weight, while the decrease of the content of the chain transfer agent obviously increases its molecular weight. The molecular weight distribution is in a range of 2 to 3, in agreement with the radical polymerization principle. The resulting terpolymers indeed possessed the radiopacity altered with the sample thickness.

Key words: Radiopaque polymer, Poly(methyl methacrylate), Sugar-containing polymer, Terpolymer

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