Non-Isothermal Crystallization Kinetics of Polyvinyl Alcohol-Graphene Oxide Composites

Cheng Peng Li; Mary She; Ling Xue Kong

doi:10.4028/www.scientific.net/AMM.446-447.206

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 446-447Non-Isothermal Crystallization Kinetics of...

Non-Isothermal Crystallization Kinetics of Polyvinyl Alcohol-Graphene Oxide Composites

Abstract:

Polyvinlyl alcohol (PVA)/graphene oxide (GO) composites are prepared by solution blending method. And the non-isothermal crystallization kinetics of as-prepared composites is evaluated by differential scanning calorimetry (DSC). The results indicate the graphene oxide can significantly modify the non-isothermal crystallization behavior of the PVA, for instance improved crystallization temperature and prolonged crystallization time. Enhanced crystallization temperature illustrates that GO can act as effective nucleating agent. However, prolonged crystallization time means that GO can retard the whole crystallization. Further kinetics analysis indicates that both the crystallization kinetics of neat PVA and PVA/GO match the Mo model very well. According to the Mo model, during the whole crystallization process, graphene oxide perform as a retardant. In conclusion, graphene oxide can act as effective nucleating agent due to strong interaction bewteen graphene oxide and PVA matrix. On the other hand, graphene oxide loaded may lead to other side effects. This side effects may lead to the retarded crystallization speed finally.

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Periodical:

Applied Mechanics and Materials (Volumes 446-447)

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206-209

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.446-447.206

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Online since:

November 2013

Authors:

Cheng Peng Li, Mary She, Ling Xue Kong

Keywords:

Graphene Oxide, Non-Isothermal Crystallization, Poly(vinyl alcohol)

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