文献类型：期刊文献

英文题名：A two-step depressurization batch process for the formation of bi-modal cell structure polystyrene foams using scCO₂

作者：Bao, Jin-Biao[1,2];Liu, Tao[1];Zhao, Ling[1];Hu, Guo-Hua[2,3]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Nancy Univ, INPL, ENSIC, CNRS,Lab React & Proc Engn, F-54001 Nancy, France;[3]Maison Univ, Inst Univ France, F-75005 Paris, France

年份：2011

卷号：55

期号：3

起止页码：1104

外文期刊名：JOURNAL OF SUPERCRITICAL FLUIDS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000286959000030)】；

语种：英文

外文关键词：Two-step depressurization; Bi-modal; Foam; SC-CO2; Polymers

摘要：A two-step depressurization batch process is developed to produce bi-modal cell structure polystyrene (PS) foams by using supercritical carbon dioxide (SC-CO2) as the blowing agent. Bi-modal cell structure foams can be achieved by depressurization in two distinct steps and can be significantly affected by the process parameters. The process conditions at the holding stage between the two steps are the key to controlling the bi-modal cell structure. The findings of this study can help predict the bi-modal cell morphology of PS and other polymers prepared by a two-step depressurization bath process. (C) 2010 Elsevier B.V. All rights reserved.