Frontiers of Chemical Science and Engineering >

2007 , Vol. 1 >Issue 1: 50 - 54

DOI: https://doi.org/10.1007/s11705-007-0010-z

Thermal decomposition of poly(ethylene terephthalate)/mesoporous molecular sieve composites

Expand
  • 1.Key Lab of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China; College of Chemistry & Environmental Science, Hebei University, Baoding 071002, China; 2.Key Lab of Beijing City on Preparation and Processing of Novel Polymer Materials, Beijing University of Chemical Technology, Beijing 100029, China;

Published date: 05 Mar 2007

Fold

Abstract

The nonisothermal and isothermal degradation processes of poly (ethylene terephthalate)/mesoporous molecular sieve (PET/MMS) composites synthesized by in-situ polymerization were studied by using thermogravimetric analysis in nitrogen. The nonisothermal degradation of the composite is found to be the first-order reaction. An iso-conversional procedure developed by Ozawa is used to calculate the apparent activation energy (E), which is an average value of about 260 kJ/mol with the weight conversion from 0% to 30%, and is higher than that of neat PET. Isothermal degradation results are confirmed with the nonisothermal process, in which PET/MMS showed higher thermal stability than neat PET. The polymer in mesoporous channels has more stability due to the protection of the inorganic pore-wall. These results indicate that mesoporous MMS in PET/MMS composites improve the stability of the polymer.

Cite this article

RUN Mingtao, ZHANG Dayu, WU Sizhu, WU Gang . Thermal decomposition of poly(ethylene terephthalate)/mesoporous molecular sieve composites[J]. Frontiers of Chemical Science and Engineering, 2007 , 1(1) : 50 -54 . DOI: 10.1007/s11705-007-0010-z

Options
Outlines

/

〈 〉