Synthesis and degradation kinetics of a novel polyester containing bithiazole rings

被引：15

作者：

He, W. ^{[1
,2
]}

Jiang, Y. Y. ^{[1
]}

Luyt, A. S. ^{[2
]}

Ocaya, R. O. ^{[3
]}

Ge, T. J. ^{[1
]}

机构：

[1] Shenyang Univ Chem Technol, Res Ctr Plast Engn, Shenyang 110142, Peoples R China

[2] Univ Free State Qwaqwa Campus, Dept Chem, ZA-9866 Phuthaditjhaba, South Africa

[3] Univ Free State Qwaqwa Campus, Dept Phys, ZA-9866 Phuthaditjhaba, South Africa

来源：

THERMOCHIMICA ACTA | 2011年 / 525卷 / 1-2期

关键词：

Polyester; Schiff base; Thermogravimetric analysis; Thermal degradation kinetics; NONISOTHERMAL KINETICS; THERMAL-DECOMPOSITION; MAGNETIC-PROPERTIES; COMPLEX PROCESSES; DEHYDRATION; DEPENDENCE; ERRORS; DSC;

D O I：

10.1016/j.tca.2011.07.015

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

A novel Schiff base type polyester containing 2,2'-diamino-4,4'-bithiazole (DABT) was prepared by low-temperature interface polycondensation of 1,4-benzenedicarbonyl dichloride with 4,4'-(4.4'-bithiazole-2,2'-diyIbis(imine-2,1-diyl) diphenol (BDDP), which is derived from a 2,2'-diamino-4,4'-bithiazole (DABT) Schiff base reacted with a 4-hydroxybenzaldehycle monomer.The newly generated polyester was characterized by FTIR spectroscopy, elemental analysis, and X-ray diffraction spectroscopy. The thermal decomposition was investigated in nitrogen atmosphere using thermogravimetric analysis. The activation energies of the decomposition step of the polyester were calculated through the isoconversional methods of Kissinger-Akahira-Sunose (K-A-S) and the iterative equation. In order to estimate the reaction model that best describes the experimental data, the use of an empirical kinetic equation based on that proposed by Sestak-Berggren was investigated here. On the basis of the kinetic data, the life time estimates for the polyester generated from the weight loss of 5%, 10%, and 15% were also constructed. (C) 2011 Elsevier B.V. All rights reserved,

引用

页码：9 / 15

页数：7

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