Synthesis of Poly(ϵ‐caprolactone‐co‐methacrylic acid) Copolymer via Phosphazene‐Catalyzed Hybrid Copolymerization
Synthesis of Poly(ϵ‐caprolactone‐co‐methacrylic acid) Copolymer via Phosphazene‐Catalyzed Hybrid Copolymerization
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DOI：
10.1002/macp.201200510
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发表时间：
2013-02
影响因子：
2.5
通讯作者：
Jinbao Xu;Yang Hongjun;Guangzhao Zhang
中科院分区：
文献类型：
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作者：
Jinbao Xu;Yang Hongjun;Guangzhao Zhang
以1-叔丁基-4，4，4-三（二甲氨基）-2，2-双[三（二甲氨基）膦亚基氨基]-2，5，4 ~ 5-链二（磷腈）（t-BuP 4）为催化剂，通过杂化共聚法合成了聚（正己内酯-co-甲基丙烯酸叔丁酯）（CL-co-BMA）无规共聚物。该共聚物水解为聚（ε-己内酯-co-甲基丙烯酸）（CL-co-MAA），这是一种带电共聚物。核磁共振、傅里叶变换红外光谱、差示扫描量热和热重分析测量表明，环酯和乙烯基单体形成无规共聚物。用石英晶体微天平研究了共聚物的降解。
Poly(ϵ-caprolactone-co-tert-butyl methacrylate) (CL-co-BMA) random copolymer is synthesized via hybrid copolymerization with 1-tert-butyl-4,4,4-tris(dimethylamino)-2,2-bis[tris(dimethylamino)phophoranylidenamino]-2Λ5,4Λ5-catenadi(phosphazene) (t-BuP4) as the catalyst. The copolymer is hydrolyzed into poly(ϵ-caprolactone-co-methacrylic acid) (CL-co-MAA), a charged copolymer. Nuclear magnetic resonance, Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis measurements indicate that cyclic ester and vinyl monomer form a random copolymer. The degradation of the copolymers has also been studied by use of quartz crystal microbalance with dissipation.