Chem. J. Chinese Universities ›› 2003, Vol. 24 ›› Issue (6): 1122.
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ZHANG Ai-Ying, FENG Zeng-Guo, ZHANG Yong, BA Jian-Hua
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Abstract: The degradation behavior of the copolymers are investigated by immersing the copolymer film into PBS(pH=7.4) at 37 ℃ in a shaking bath .The influence of the copolymer composition on physical properties, including the swelling ratio, the weight loss, the inherent viscosity, the surface morphology of polymer films, as well as the degree of crystallization is discussed. The experimental results reveal that the degradable profiles can be controlled by changing the copolymer composition.It is shown that the intial degradation of copolymer comes from the cleavage of the ester bonds between hydrophilic PEG and hydrophobic PBT.
Key words: PEG-b-PBT block copolymer, Degradation behavior, Swelling ratio, Inherent viscosity
CLC Number:
O631.1+1
TrendMD:
ZHANG Ai-Ying, FENG Zeng-Guo, ZHANG Yong, BA Jian-Hua . Studies on Degradation Behaviour of Poly(ethyleneglycol)-b-poly (butylene terephthalate) Copolymers[J]. Chem. J. Chinese Universities, 2003, 24(6): 1122.
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http://www.cjcu.jlu.edu.cn/EN/Y2003/V24/I6/1122
