Kinetic analysis of thermal degradation of poly(ethylene glycol) and poly(ethylene oxide)s of different molecular weight

被引：165
|
作者：
Vrandecic, Natasa Stipanelov [1 ]
Erceg, Matko [1 ]
Jakic, Mice [1 ]
Klaric, Ivka [1 ]
机构：
[1] Univ Split, Fac Chem & Technol, Dept Organ Technol, HR-21000 Split, Croatia
来源：
THERMOCHIMICA ACTA | 2010年 / 498卷 / 1-2期
关键词：
Differential scanning calorimetry; Dynamic thermogravimetry; Fourier transform-infra red spectroscopy; Kinetic analysis; Poly(ethylene glycol); Poly(ethylene oxide); METHODOLOGICAL PROBLEMS; POLYETHYLENE OXIDE; THERMOGRAVIMETRY; DECOMPOSITION; PARAMETERS; POLYMERS;
D O I：
10.1016/j.tca.2009.10.005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The effect of molecular weight on thermal characteristics and thermal degradation of poly(ethylene glycol) (PEG) and poly(ethylene oxide)s (PEO) was investigated by differential scanning calorimetry, FT-IR spectroscopy and dynamic thermogravitnetry. Kinetic analysis of the non-isothermal degradation was performed using isoconversional (Flynn-Wall-Ozawa, Kissinger-Akahira-Sunose and Friedman) and the invariant kinetic parameters method. The empirical kinetic triplets (E, A, and f(alpha)) as well as the rate constants have been calculated. The relation between the heating rate, the degradation rate and molecular weight for all investigated samples has been established. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：71 / 80
页数：10
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