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Glass transition temperature of cyclic polystyrene and the linear counterpart contamination effect
Journal article   Peer reviewed

Glass transition temperature of cyclic polystyrene and the linear counterpart contamination effect

Lingfeng Gao, Joongsuk Oh, Yingfeng Tu, Taihyun Chang and Christopher Y. Li
Polymer (Guilford), v 170, pp 198-203
29 Apr 2019
DOI: https://doi.org/10.1016/j.polymer.2019.03.018

Abstract

Physical Sciences Polymer Science Science & Technology
We present here a systematic investigation on the glass transition temperature (T-g) for a series of highly purified cyclic polystyrene (c-PS) samples with molecular weight (MW) varying from 3300 to 13,400. Compared with their linear counterparts, c-PS samples show much higher T-g and exhibit weak Tg-MW dependence. By blending linear polystyrenes with c-PS, the linear polymer contamination effect on the T-g of c-PS was systematically investigated. It was found that the measured T-g of the mixtures increases with the decrease of linear polymer content and the relationship is consistent with Fox equation. These results are helpful to understand the origin of previously reported different T-g -MW relationship for c-PS.

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Domestic collaboration
International collaboration
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Polymer Science
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