文献类型：期刊文献

英文题名：Solubility and Diffusivity of Carbon Dioxide in Solid-State Isotactic Polypropylene by the Pressure-Decay Method

作者：Li, Da-chao[1];Liu, Tao[1];Zhao, Ling[1];Yuan, Wei-kang[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2009

卷号：48

期号：15

起止页码：7117

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20093412267434);WOS:【SCI-EXPANDED(收录号:WOS:000268479500029)】；

基金：The authors are grateful to die National Science Foundation of China (50703011), Shanghai Rising-Star Program (08QA 1402200), Shanghai Shuguang Project (08SG28), Program for Changjiang Scholars arid Innovative Research Team in University, and the 111 Project (1308021). Professor Lei Z.G., Beijing University of Chemical Technology, is thanked for making a useful discussion with us oil the nianuscript about the parameters of S-L EOS for iPP.

语种：英文

外文关键词：Solubility - Equations of state - Polypropylenes

摘要：The solubility and diffusivity of carbon dioxide (CO2) in the solid-state isotactic polypropylene (iPP) were studied by using the pressure-decay method at temperatures of 373.15, 398.15, and 423.15 K and pressures ranging from 1 to 15 MPa. The solubilities of CO2 in the solid-state and amorphous regions of iPP were both obtained. They increased almost linearly with increasing pressure and decreased with increasing temperature. The Sanchez-Lacombe equation of state (S-L EOS) correlated the solubility in the amorphous regions of the solid-state iPP within 3% average relative deviation in conjunction with a temperature-dependent interaction parameter. The diffusion coefficient of CO2 in the solid-state iPP showed a weak concentration dependence and had an order of magnitude of 10(-10)-10(-9) m(2)/s in the solid-state iPP.