Hybrid Copolymerization of 蔚-Caprolactone and Methyl Methacrylate

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• 作者：Hongjun Yang ; Jinbao Xu ; Stergios Pispas ; Guangzhao Zhang
• 刊名：Macromolecules
• 出版年：2012
• 出版时间：April 24, 2012
• 年：2012
• 卷：45
• 期：8
• 页码：3312-3317
• 全文大小：303K
• 年卷期：v.45,no.8(April 24, 2012)
• ISSN：1520-5835

文摘

Copolymerization of 蔚-caprolactone and methyl methacrylate with (1-tert-butyl-4,4,4-tris(dimethylamino)-2,2-bis[tris(dimethylamino)phophoranylidenamino]-2螞5,螞5-catenadi(phosphazene) (t-BuP₄) as the catalyst has been studied. Nuclear magnetic resonance (NMR) and differential scanning calorimetry (DSC) measurements indicate that the cyclic ester and vinyl monomer form a random copolymer. Thermogravimetric analysis (TGA) measurements demonstrate that such a random copolymer exhibits a decomposition temperature higher than those of the corresponding homopolymers. The present study reveals a 鈥渉ybrid copolymerization鈥?i.e., a combination of vinyl polymerization and ring-opening polymerization, which makes the incorporation of cyclic and vinyl monomers into the same polymer chain possible. Hybrid copolymerization is expected to produce a number of new interesting polymers.