Tg in polymer/oligomer athermal blends

Wei Zheng, Sindee L. Simon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The glass transition behavior of poly(α-methyl styrene), its tridecamer, and an athermal blend with its hexamer is investigated using differential scanning calorimetry. The glass transition, Tg, of the blend is found to become broader than that of the pure materials. However, the absolute heat capacity of the blend remains unchanged. The length scale of the cooperatively rearranging regions of the samples, as well as previously studied pentamer, polymer, and blends, is estimated from Donth's fluctuation model. The broadening of Tg is found to accompany a decrease of the length scale. In addition, the correlation between Tg, fragility, and the length scale of CRR is also examined.

Original languageEnglish
Title of host publicationSociety of Plastics Engineers Annual Technical Conference
Subtitle of host publicationPlastics Encounter at ANTEC 2007, Conference Proceedings
Pages1788-1792
Number of pages5
StatePublished - 2007
EventSociety of Plastics Engineers Annual Technical Conference: Plastics Encounter at ANTEC 2007 - Cincinnati, OH, United States
Duration: May 6 2007May 11 2007

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume3

Conference

ConferenceSociety of Plastics Engineers Annual Technical Conference: Plastics Encounter at ANTEC 2007
CountryUnited States
CityCincinnati, OH
Period05/6/0705/11/07

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    Zheng, W., & Simon, S. L. (2007). Tg in polymer/oligomer athermal blends. In Society of Plastics Engineers Annual Technical Conference: Plastics Encounter at ANTEC 2007, Conference Proceedings (pp. 1788-1792). (Annual Technical Conference - ANTEC, Conference Proceedings; Vol. 3).