| 端羧基/羟基丙烯酸正丁酯聚合物的合成 |
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| 引用本文： | 李平,邹志琛,周峰. 端羧基/羟基丙烯酸正丁酯聚合物的合成[J]. 山东师范大学学报(自然科学版), 2002, 17(3): 41-44 |
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| 作者姓名： | 李平 邹志琛 周峰 |
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| 作者单位： | 1. 山东师范大学化学系,250014,济南
2. 兰州化物所固体润滑国家重点实验室,730000,兰州 |
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| 基金项目： | 国家自然科学基金资助项目 (60 0 470 0 1) |
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| 摘 要： | 研究了丙烯酸正丁酯在两种链转移剂巯基乙酸（TGA）和巯基乙醇（TEG）存在下的自由基聚合反应，合成了具有端羧基或端羟基的丙烯酸正丁酯聚合物，并用IR，NMR，GPC，酸碱滴定等方法对其进行了表征，以1／Pn对[S]／[M]作图求出了两种链转移剂在聚合条件下的链转移常数，讨论了端基官能团化的比率，滴定法和GPC法得到的TGA的链转移常数分别为0．64，0．67，滴定法得出TEG的链转移常数为0．67，保持单体和引发剂的摩尔比（100：1）不变，当单体与链转移剂的摩尔比大于0．02时，端基官能团化的比例可达85％以上。
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| 关 键 词： | 端羧基 丙烯酸正丁酯 合成 端基官能团化聚合物 自由基链转移聚合反应 链转移常数 端羟基 链转移剂 |
THE SYNTHESIS OF THE END CARBOXYL/HYDROXYL GROUP FUNCTIONALIZED BUTYL ACRYLATE POLYMERS |
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| Li Ping ) Zou Zhichen ) Zhou Feng ). THE SYNTHESIS OF THE END CARBOXYL/HYDROXYL GROUP FUNCTIONALIZED BUTYL ACRYLATE POLYMERS[J]. Journal of Shandong Normal University(Natural Science), 2002, 17(3): 41-44 |
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| Authors: | Li Ping ) Zou Zhichen ) Zhou Feng ) |
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| Affiliation: | Li Ping 1) Zou Zhichen 1) Zhou Feng 2) |
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| Abstract: | Radical chain transfer polymerization of butyl acrylate was studied in the presence of two chain transfer agents,i e,thioglycol acid (TGA) and thioethylene glycol(TEG).The obtained polymers were characterized by IR,NMR and titration method.The chain transfer constants of the two chain transfer agents under the experimental conditions were obtained by the slop of the 1/ Pn versus / curves.Then,the end group functionalized ratios of the synthesized polymers were discussed.The chain transfer constant of TGA is 0.64 by titration and 0.67 by GPC,of TEG is 0.67 only by titration.By keeping the molar ratio of monomer to initiatior constant,when the molar ratio of monomer to chain transfer agent exceeded 2% the end group functionalized ratio of the synthesized polymers were above 85%.So highly functionalized polymers were obtained. |
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| Keywords: | chain transfer radical polymerization end functionalized polymer chain-transfer constants |
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