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Synthesis of Poly(ϵ-caprolactone-co-methacrylic acid) Copolymer via Phosphazene-Catalyzed Hybrid Copolymerization

Year: 2013

Journal: Macromolecular Chemistry and Physics, 20130324

Authors: Jinbao Xu 1, Hongjun Yang 2, Guangzhao Zhang 3,*

Last authors: Guangzhao Zhang

Organizations: 1 
Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China . 2 
Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China . 3 
Hefei National Laboratory for Physical Sciences at Microscale, Department of Chemical Physics, University of Science and Technology of China, Hefei 230026, P. R. China, Faculty of Materials Science and Engineering, South China University of Technology, Guangzhou 510640, P. R. China

Country: China

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.