| 用双官能团引发剂进行的基团转移嵌段共聚研究 |
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| 引用本文： | 邹友思,林建军,潘容华.用双官能团引发剂进行的基团转移嵌段共聚研究[J].高分子学报,1993,0(5):521-528. |
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| 作者姓名： | 邹友思 林建军 潘容华 |
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| 作者单位： | 厦门大学化学系，厦门大学化学系，厦门大学化学系 厦门，邮政编码:361005，厦门，邮政编码:361005，厦门，邮政编码:361005 |
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| 摘 要： | 本文用二种双官能团引发剂进行基团转移嵌段共聚研究,得到了一系列实测分子量和理论分子量相近、分子量分布较窄的A-B-A型嵌段共聚物。用GPC、~1H-NMR、DSC等手段对嵌段共聚物进行了表征,证明确是两相嵌段共聚丙烯酸酯。发现位阻较大的单体作为第二单体时不利于聚合。过高的催化剂用量使嵌段共聚的总转化率降低。使用极性较大的溶剂可缩短第一步聚合的诱导期,但不影响第二步聚合的诱导期,即极性较大的溶剂有利于催化剂的离解。单体浓度增大使共聚物的分子量减小,多分散性指数增大。可通过单体投料比改变共聚物的热形变温度。
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| 关 键 词： | 基团转移聚合 嵌段共聚 聚甲基丙烯酸酯 聚丙烯酸酯 双官能团引发剂 |
| 收稿时间： | 1991-07-25 |
GROUP TRANSFER BLOCK COPOLYMERIZATION BY BIFUNCTIONAL INITIATORS |
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| ZOU You-si,LIN Jian-jun,PAN Rong-hua.GROUP TRANSFER BLOCK COPOLYMERIZATION BY BIFUNCTIONAL INITIATORS[J].Acta Polymerica Sinica,1993,0(5):521-528. |
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| Authors: | ZOU You-si LIN Jian-jun PAN Rong-hua |
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| Institution: | Department of Chemistry; Xiamen University; Xiamen; Post code: 361005 |
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| Abstract: | It was reported the group transfer block copolymerization of methacrylates and arylates with bifunctional initiators and bibenzoate catalyst. ABA-triblock copolymers of MMA and BA, MMA and BMA, MMA and EMA with predetermined molecular weight and low poly-dispersity were obtained. The copolymers were characterized by 1H-NMR, GPC and DSC. The effects of the block sequence, catalyst concentration, solvent polarity on block copolymerization were studied. |
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| Keywords: | Group transfer polymerization Block copolymerization Polymethacrylates Polyacrylates Bifunctional initiator |
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