丁二烯-甲基丙烯酸甲酯嵌段共聚物的阴离子聚合及表征 |
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引用本文: | 周庆业 张邦华. 丁二烯-甲基丙烯酸甲酯嵌段共聚物的阴离子聚合及表征[J]. 高分子学报, 1996, 0(1): 41-46 |
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作者姓名: | 周庆业 张邦华 |
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摘 要: | 讨论了用阴离子方法进行了二烯与甲基丙烯酸甲酯共聚合的过程,并用GPC、FTIR、NMR和动态粘弹谱对共聚物进行了表征.证明所得聚合物为具有较高分子量、窄分布的二嵌段共聚物.
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关 键 词: | 阴离子聚合,丁二烯-甲基丙烯酸甲酯共聚物,嵌段共聚物,溶剂极性 |
ANIONIC COPOLYMERIZATION AND CHARACTERIZATION OF POLY(BUTADIENE)-BLOCK-POLY(METHYLMETHACRYLATE) COPOLYMER |
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Abstract: | The known structure block copolymers could be obtained through anionic polymerization if the solvents and monomers were purified rigorously.This paper described the procedure about the synthesis of poly(butadiene)-block-poly (methyl methacrylate)copolymers.The polarity of solvents used for polymerization affects drastically the tacticity of polybutadiene.As the butadiene polymerized in THF instal of benzene,its Tg increases from -67℃ to -20℃.The results from the characterization of GPC,FTIR,NMR andDMA demonstrated that the polymers obtained were block copolymers with contents morethan 80% 1,4 polybutadiene and 70% syndiotachc PMMA. |
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Keywords: | Anionic polymerization Poly(butadiene)-block-Poly(methyl methactylate)copolymers Blockcopolymer Solvent polarity |
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