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《Chemistry》 2006-07
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Study on Permeation of Water Clusters in PAM membrane

Zhang Jianping,He Chunhong,Zhang Minqing, Xing Aihua(School of Chemical Engineering,Tianjin University,Tianjin 300072)  
Water vapor exhibits some unusual transportation behaviors in polymer membrane compared with permanent gases. Dynamic sorption curves of water vapor with different activities in polyacrylamide(PAM) membrane are measured, and diffusion coefficients of water clusters in PAM membrane are calculated with modified ENSIC model. With the increase of mean cluster size(MCS)at different water activities, multi-layer sorption and capillary condensation occur, which lead to the diminution of diffusion coefficients in PAM membrane.
【Fund】: 国家自然科学基金资助项目(20376054)
【CateGory Index】: O647.31
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