An improved model for mass transfer during the formation of polymeric membranes by the immersion-precipitation process
學年 82
學期 2
出版（發表）日期 1994-06-01
作品名稱 An improved model for mass transfer during the formation of polymeric membranes by the immersion-precipitation process
作品名稱（其他語言）
著者 Cheng, Liao-ping; Soh, Young S.; Dwan, An-hwa; Gryte, Carl C.
單位 淡江大學化學工程與材料工程學系
出版者 New York : Wiley-Blackwell
著錄名稱、卷期、頁數 Journal of polymer science Part B : Polymer physics 32(8), pp.1413-1425
摘要 An analysis is presented, which describes the isothermal ternary diffusion process encountered in the formation of a cellulose acetate polymeric membrane by a direct immersion-precipitation of polymeric solutions in a nonsolvent bath. A material coordinate was employed to derive the mass transfer equations for the membrane solution and the convective mass transfer in the coagulation bath was taken into account by solving the hydrodynamic boundary layer equations. Diffusion coefficients were measured and used to deduce ternary phenomenological coefficients. The computed results are found to agree with the experimental precipitation time and membrane morphologies observed in scanning electron photomicrographs.
關鍵字 membrane; immersion; precipitation; cellulose acetate; ternary; diffusion
語言 en
ISSN 0887-6266
期刊性質 國外
收錄於 SCI EI
產學合作
通訊作者
審稿制度
國別 USA
公開徵稿
出版型式 紙本
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