Thermal degradation kinetics of polybutadiene （聚丁二烯的热降解动力学）.pdf

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Thermal degradation kinetics of polybutadiene （聚丁二烯的热降解动力学）.pdf

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Thermal degradation kinetics of polybutadiene （聚丁二烯的热降解动力学）

Polymer Degradation and Stability 53 (19%) 295-300 0 19% Elsevier Science Limited Printed in Northern Ireland. All rights reserved ELSEVIER PPI: SO141-3910(96)00098-S 0141-3910/%/$15.im Thermal degradation kinetics of polybutadiene rubber Jyh-Ping Lin,” ChipYuan Chang,“* Chao-Hsiung WU’ Shin-Min Shih “Graduate Institute of Environmental Engineering, National Taiwan University, Taipei 106, Taiwan, China hDepartment of Environmental Engineering, Da-Yeh Institute of Technology, Chang-Hwa 515, Taiwan, China “Department of Chemical Engineering, National Taiwan University, Taipei 106, Taiwan, China (Received 5 February 1996; accepted 7 March 1996) The thermal degradation kinetics of polybutadiene rubber (BR) was investig- ated by dynamic thermogravimetry, in a nitrogen atmosphere, over the temp- erature range 177-577°C and at constant nominal heating rates of 3, 5 and 7”C/min, respectively. Two distinct mass change stages in the thermogravimet- ric analysis (TGA) curves indicated that the degradation of