High-Temperature Stability and Pyrolysis Kinetics and Mechanism of Bio-Based and Petro-Based Resins Using TG-FTIR/MS

编号 020033505

推送时间 20220321

研究领域 林产化工 

年份 2022 

类型 期刊 

语种 英语

标题 High-Temperature Stability and Pyrolysis Kinetics and Mechanism of Bio-Based and Petro-Based Resins Using TG-FTIR/MS

来源期刊 Industrial & Engineering Chemistry Research

期 第335期

发表时间 20210929

关键词 EPOXIDIZED SOYBEAN OIL;  CROSS-LINKING;  MODEL-FREEROSIN; 

摘要 Pyrolysis behavior of resins is essential for their high-temperature application. Herein, the high-temperature stability and pyrolysis kinetics and mechanism of rosin glyceride (RGE), hydrogenated rosin glyceride (HRGE), C9 petro-based resin (C9PR), and hydrogenated C9 petro-based resin (HC9PR) under a nonoxidizing atmosphere were investigated by thermogravimetry coupled with Fourier transform infrared spectrometry or mass spectrometry (TG-FTIR/ MS) techniques. Friedman and Starink methods as well as reaction-order and truncated Sestak-Berggren models were used to evaluate kinetic and thermodynamic parameters, and results indicated that f(alpha) = (1 - alpha)(n) was the most probable pyrolysis mechanism for different resins. In addition, the average activation energies for pyrolysis of RGE, HRGE, C9PR, and HC9PR obtained by the Starink method were 188.97, 170.95, 159.69, and 151.66 kJ/mol, respectively, suggesting that bio-based resins exhibited better high-temperature stability than cycloaliphatic or aromatic petro-based resins thanks to their unique tricyclic phenanthrene structures, and the high-temperature stability of resins mildly would decrease after hydromodification due to the cracking of saturated bonds, which was well supported by TG-FTIR/MS analyses. Possible pyrolysis pathways were proposed.

服务人员 尚玮姣

服务院士 宋湛谦

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