Thermal Oxidative Degradation Behavior of Fluorinated Thermotropic Liquid Crystal Copolyesters

Peng Wei; Shuo Han Huang; Yan Ping Wang; Yi Min Wang

doi:10.4028/www.scientific.net/AMR.1088.343

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1088Thermal Oxidative Degradation Behavior of...

Thermal Oxidative Degradation Behavior of Fluorinated Thermotropic Liquid Crystal Copolyesters

Abstract:

In this study, the thermal oxidative degradation behavior of thermotropic liquid crystal copolyesters P-BPAFx containing 2.5-10 mol% bisphenol AF unit were evaluated by thermogravimetric analysis (TGA) technique under air atmosphere and the degradation activation energy (E) was obtained from Kissinger and Kissinger-Akahira-Sunose (KAS) method. The degradation behavior of copolyester are strongly dependent on the molar percentage of BPAF unit. Results showed that the E values obtained by the two methods increase first and then decrease slightly with increasing the BPAF unit and follow the order P-BPAF5.0< P-BPAF10<P-BPAF2.5, indicating P-BPAF2.5 has good thermal stability. The reason for this phenomenon was discussed in detail in the text.

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Periodical:

Advanced Materials Research (Volume 1088)

Pages:

343-347

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1088.343

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Online since:

February 2015

Authors:

Peng Wei, Shuo Han Huang, Yan Ping Wang, Yi Min Wang*

Keywords:

Bisphenol AF, Degradation Kinetics, Nonisothermal, Thermogravimetric Analysis (TGA), Thermotropic Liquid Crystal Copolyester (TLCP)

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