Effect of Natural Weathering on Molecular Structure of Polystyrene in Typical Dry-hot Environment

doi:10.19491/j.issn.1001-9278.2013.06.011

China Plastics ›› 2013, Vol. 27 ›› Issue (06): 52-55 .DOI: 10.19491/j.issn.1001-9278.2013.06.011

Effect of Natural Weathering on Molecular Structure of Polystyrene in Typical Dry-hot Environment

Received:2013-03-25 Revised:1900-01-01 Online:2013-05-26 Published:2013-05-26

Abstract

Abstract: In order to study the molecular structure changes of polystyrene in natural dry-hot environment, outdoor exposure test was performed in Turpan and Ruoqiang for one year, FTIR, GPC, and DSC analysis were performed thereafter. It showed that photo-degradation and chain scission occurred, resulting in the decreasing of molecular weight, broadening of molecular weight distribution, and lowering of glass transition temperature.

Key words: polystyrene, wet-hot environment, molecular structure, carbonyl index, molecular weight, glass transition temperature., molecular weight distribution

CLC Number:

O631.3+3

. Effect of Natural Weathering on Molecular Structure of Polystyrene in Typical Dry-hot Environment[J]. China Plastics, 2013, 27(06): 52-55 .

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Effect of Natural Weathering on Molecular Structure of Polystyrene in Typical Dry-hot Environment

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