Insights into Pyrolysis of Nano-Polystyrene Particles: Thermochemical Behaviors and Kinetics Analysis

作     者：DING Li ZHAO Jianping PAN Yong GUAN Jin JIANG Juncheng WANG Qingsheng 

作者机构：College of Mechanical and Power EngineeringNanjing Tech UniversityNanjing 211816China College of Safety Science and EngineeringNanjing Tech UniversityNanjing 211816China Department of Fire Protection and SafetyOklahoma State UniversityStillwater 74078USA 

出 版 物：《Journal of Thermal Science》 (热科学学报（英文版）)

年 卷 期：2019年第28卷第4期

页      面：763-771页

核心收录：

学科分类：07[理学] 0702[理学-物理学] 

基　　金：supported by the National Program on Key Basic Research Project of China(2016YFC0801502,2017YFC0804801) National Natural Science Fund of China(No.21436006,21576136) Jiangsu Project Plan for Outstanding Talents in Six Research Fields(No:2015–XCL–019) 

主　　题：nano-polystyrene thermal decomposition kinetics mechanism 

摘      要：The thermal degradation kinetics of nano-polystyrene particles with diameters of 60,90,160,and 225 nm were investigated in nitrogen atmosphere using thermogravimetric analysis(TGA).Various kinetic models were employed to determine the thermal degradation mechanism and ***-polystyrene particles have relatively lower thermal stability when compared to *** differential thermo–gravimetric(DTG)data and apparent activation energies indicate that the thermal degradation of nano-polystyrene particles at 60 nm is a two-step reaction process where the second step plays a dominant role,while nano-polystyrene particles with diameter greater than 60 nm exhibit single-step *** to most micro/macro polystyrene particles,DTG peaks of nano-polystyrene particles shift towards higher temperatures with increasing heating *** degradation of nano-polystyrene particles under nitrogen atmosphere follows the first-order reaction ***,the apparent activation energies increase(162-181 kJ·mol–1)with the increase of particle sizes(60-225 nm).This study could provide some insights into pyrolysis of nano-polystyrene particles and a safer process of manufacturing,storage and handling of nano-polystyrene particles.