Synthesis and thermal behaviors of 1,3-bis(4-aminophenoxy)benzene (TPER) and polyimide based on TPER and pyromellitic dianhydride

Autor:	Kangzhen Xu, Jiaoqiang Zhang, Rong-Zu Hu, Min Chao, Haixia Ma, Tiezheng Ji, Hong-xu Gao
Rok vydání:	2013
Předmět:	Isothermal microcalorimetry Pyromellitic dianhydride Reaction mechanism Materials science Thermal decomposition Enthalpy Condensed Matter Physics Gibbs free energy chemistry.chemical_compound symbols.namesake chemistry Polymer chemistry symbols Physical and Theoretical Chemistry Benzene Polyimide
Zdroj:	Journal of Thermal Analysis and Calorimetry. 114:441-449
ISSN:	1572-8943 1388-6150
DOI:	10.1007/s10973-013-2955-0
Popis:	1,3-Bis(4-aminophenoxy)benzene (TPER) and poly(amic acid) based on TPER and pyromellitic dianhydride (PMDA) were synthesized. After imidization of the poly(amic acid), polyimide based on TPER and PMDA was obtained. The melting process and the specific heat capacity (C p) of TPER were examined by DSC and microcalorimetry, respectively. The melting enthalpy, the melting entropy, and the C p for TPER were obtained. The enthalpy change, the entropy change, and the Gibbs free energy change for TPER were obtained within 283 and 353 K. The thermal decomposition reaction mechanism of the polyimide is classified from the TG–DTG experimental data, and the thermokinetic parameters of the thermal decomposition reaction are E a = 296.87 kJ mol−1and log (A/s−1) = 14.41.
Databáze:	OpenAIRE
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