Non-isothermal melt crystallization behavior of poly(ethylene terephthalate)/graphene nanocomposites

Shigeru Aoyama, Yong Tae Park, Toshiaki Ougizawa, Chris Macosko

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

Abstract

Poly(ethylene terephthalate)(PET)/graphene nanocomposites were prepared by melt mixing to characterize their gas permeability and mechanical properties. With 2 wt% of few layered graphene, PET/graphene composite films show more than 70% decrease in N 2 gas permeation and 10-21% increase in storage modulus, E′. Their non-isothermal crystallization phenomena from the melt were also investigated by differential scanning calorimetory (DSC). Crystallization temperature, T c , of PET/graphene nanocomposites was higher than that of PET/MWCNT nanocomposites. This suggests that the nucleation effect of graphene was higher than that of MWCNT and was enhanced with the increase in concentration of graphene. On the other hand, PET/graphene nanocomposites show shorter half crystallization time, t 1/2 , than neat PET at lower concentrations, and t 1/2 increased along with concentration of graphene. From Raman spectroscopy, it was shown that PET chains in nanocomposites are confined strongly in the presence of an excess of graphene. This confinement effect suggests that crystal growth rate of PET was suppressed by graphene in nanocomposites.

Original languageEnglish (US)
Title of host publication71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
PublisherSociety of Plastics Engineers
Pages316-320
Number of pages5
Volume1
ISBN (Print)9781632665300
StatePublished - Jan 1 2013
Event71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013 - Cincinnati, OH, United States
Duration: Apr 22 2013Apr 24 2013

Other

Other71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
CountryUnited States
CityCincinnati, OH
Period4/22/134/24/13

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  • Cite this

    Aoyama, S., Park, Y. T., Ougizawa, T., & Macosko, C. (2013). Non-isothermal melt crystallization behavior of poly(ethylene terephthalate)/graphene nanocomposites. In 71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013 (Vol. 1, pp. 316-320). Society of Plastics Engineers.