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首页> 外文期刊>Inorganic materials: applied research >Study of Structural and Morphological Changes during Accelerated Oxidative Degradation of Mixtures of Polyoxybutyrate with Polycaprolactone
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Study of Structural and Morphological Changes during Accelerated Oxidative Degradation of Mixtures of Polyoxybutyrate with Polycaprolactone

机译：Study of Structural and Morphological Changes during Accelerated Oxidative Degradation of Mixtures of Polyoxybutyrate with Polycaprolactone

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摘要

Structural and morphological changes in the film samples of poly(oxybutyrate-co-oxyvalerate) (P(OB-OV)) and poly-epsilon-caprolactone (PCL) during accelerated oxidative degradation in the Fenton reagent are studied by IR spectroscopy, DSC, and scanning electron microscopy. It is shown that phase separation of the P(OB-OV) and PCL components is observed in the initial mixture. The melting of different phases of P(OB-OV) is observed at 147 and 157 degrees C, and PCL melts at 61 degrees C. The degrees of crystallinity of P(OB-OV) and PCL in the mixture are 67 and 50, respectively. It is found that the degradation of P(OB-OV) predominates during the incubation of the samples of the composite in the Fenton solution for 2 to 12 weeks. It is possible to substantially change the rate of oxidative degradation and the molecular weight and degree of crystallinity of a P(OB-OV):PCL polymer composite material by varying the ratio of the components.

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