Abstract
AbstractPoly(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.
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