Changes in carbonyl index and average molecular weight on embrittlement of enhanced-photodegradable polyethylenes
作者： A. L. Andrady , J. E. Pegram , Y. Tropsha
DOI: 10.1007/BF01458025
关键词: Embrittlement 、 Fourier transform infrared spectroscopy 、 Gel permeation chromatography 、 Polymer chemistry 、 Polymer 、 Ultimate tensile strength 、 Chemical engineering 、 Molar mass distribution 、 Degree of polymerization 、 Photodegradation 、 Materials science 、 Environmental engineering 、 Materials Chemistry 、 Polymers and Plastics
摘要: Weathering behavior of two types enhanced-photodegradable polyethylenes was studied using FTIR spectroscopy, tensile property changes, and gel-permeation chromatography to monitor structural changes accompanying photodegradation. Changes in elongation at break carbonyl index during degradation showed a strong correlation with the average molecular weight polymers. At point embrittlement, highest extent measured properties, number-average weights for both polymers were 104 g/mol range. Facile biodegradation is not expected this degree polymerization.
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