Synthesis, structure and thermal properties of poly(A-block-B-block-A) copolymer based on biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) and amorphous polystyrene
作者： H. X. Xiang , S. C. Wang , R. L. Wang , X. S. Wen , Z. Zhou
DOI: 10.1179/1432891714Z.000000000793
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摘要: AbstractA series of poly(A-block-B-block-A) copolymers based on biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and amorphous polystyrene (PS) were synthesised by atom transfer radical polymerisation (ATRP). The chemical structure, molecular weight distribution systematically characterised Fourier transform infrared, 1H nuclear magnetic resonance (1H NMR) gel permeation chromatography (GPC). melting crystallisation behaviours, thermal stabilities investigated differential scanning calorimetry (DSC) gravimetric analysis (TGA); the degradation activation energy was calculated Horowitz–Metzger method. Results showed that maximum yield triblock copolymer 88%. DSC curves revealed had their cold temperature from 50·83 to 65·67°C, crystallinity 55·60 12·60. TG enhanced, its ...
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