Blends of poly(ethylene terephthalate) and poly(methyl methacrylate): II. non-isothermal degradation kinetics

被引：0

作者：

Al-Mulla, Adam ^{[1
]}

Ali, Sami H. ^{[1
]}

Al-Hassan, Mishal ^{[1
]}

机构：

[1] Kuwait Univ, Dept Chem Engn, Safat 13060, Kuwait

来源：

KUWAIT JOURNAL OF SCIENCE & ENGINEERING | 2009年 / 36卷 / 2B期

关键词：

THERMAL-DEGRADATION; POLY(ETHYLENE TEREPHTHALATE); ETHYLENE TEREPHTHALATE; OXIDATIVE-DEGRADATION; POLYMER DEGRADATION; GAS CHROMATOGRAPHY; DECOMPOSITION; THERMOGRAVIMETRY; POLYETHYLENE; PARAMETERS;

D O I：

暂无

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

The kinetics of the thermal degradation of poly(ethylene terephthalate) (PET), poly(methyl methacrylate) (PMMA) and four different blends of PET and PMMA (PET90/PMMA10, PET75/PMMA25, PET50/PMMA50 and PET25/PMMA75 weight/weight percent), developed using a batch mixing process, were investigated by Thermogravimetric Analysis (TGA). Kissinger, Friedman, Park-Oh-Lee-Kim-Yo, Vyazovkin and Ozawa models have been used to characterize the degradation kinetics of the polymers under study at the heating rates 5, 10, 15 and 20 degrees C/mm under nitrogen atmosphere The kinetic parameters evaluated were the activation energy (E(a)), Arrhenius pre-exponential factor (A) and degradation reaction order (n) The fitting of each model to the experimental data was evaluated using the correlation coefficient (r). The results indicated that Park-co and Kissinger models gave similar values of E(a) and Ln (A), while those obtained using Vyazovkin and Ozawa were almost identical PET/PMMA blends in general exhibited higher activation energies, and thus better thermal stabilities, than PMMA

引用

页码：117 / 139

页数：23

共 32 条

[1]

[Anonymous], 2002, ANAL ANAL CHEM, DOI DOI 10.1021/AC60131A045

[2] DIRECT EXAMINATION OF POLYMER DEGRADATION BY GAS CHROMATOGRAPHY .2. DEVELOPMENT OF TECHNIQUE FOR QUANTITATIVE KINETIC STUDIES [J].