文献类型：期刊文献

英文题名：Diffusion and desorption of CO2 in foamed polystyrene film

作者：Qian, Ying-Hui[1];Cao, Jun-Ming[2];Li, Xue-Kun[1];Cao, Gui-Ping[1];Wang, Chang-Chun[3];Shi, Yun-Hai[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, UNILAB, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Fudan Univ, Dept Chem, Shanghai 200433, Peoples R China;[3]Fudan Univ, Dept Macromol Sci, Shanghai 200433, Peoples R China

年份：2018

卷号：135

期号：1

外文期刊名：JOURNAL OF APPLIED POLYMER SCIENCE

收录：;EI(收录号：20173904213557);WOS:【SCI-EXPANDED(收录号:WOS:000411491400015)】；

基金：This work is supported by the National Natural Science Foundation of China (NSFC), grants 20676031 and 20876051.

语种：英文

外文关键词：diffusion; foamed PS; micromolecule; solubility

摘要：Based on the existence of the pores in foamed polystyrene (PS), foamed-non-Fickian diffusion (FNFD) model was proposed, for the first time, to regress the desorption data obtained by gravimetric method. Results showed that FNFD model could accurately describe the diffusion behavior of CO2 out of foamed PS, and well predict the solubility of CO2 in foamed PS. The characterization of scanning electron microscopy indicated that there were abundant pores in the foamed PS, and the pores store most of CO2, which would diffuse in the pores, adsorb to the wall of the pores, penetrate across walls of the pores, diffuse in the matrix of PS, and desorb out of PS. The mass of CO2 in the pores of foamed PS was expressed as a function of foaming pressure and temperature according to foaming kinetics. Results showed that the values calculated by this function agreed well with the values obtained from the FNFD model. (C) 2017 Wiley Periodicals, Inc.