Effect of inner non-solvent condition on morphology of PVDF hollow fiber membranes prepared by NIPS spinning process
學年 106
學期 2
出版（發表）日期 2018-03-15
作品名稱 Effect of inner non-solvent condition on morphology of PVDF hollow fiber membranes prepared by NIPS spinning process
作品名稱（其他語言）
著者 Hsu-Hsien Chang; Sheng-Chang Chen; Liao-Ping Cheng
單位
出版者
著錄名稱、卷期、頁數 Journal of Applied Science and Engineering 21(1), p.89-98
摘要 Hollow fiber membranes of PVDF were prepared by isothermal wet spinning process from the water/DMF/PVDF system at 25 C. The dope solution comprised 21 wt% PVDF in DMF, and pure water was employed both as the inner and outer coagulants. SEM imaging of the membrane indicated an unexpected interesting morphology: columnar macrovoids extended from the outer surface to the central region, while cellular pores constituted the inner half of the membrane. As water was a harsh nonsolvent, one tended to think that macrovoids shall form towards the inner surface of the hollow fiber. Absence of macrovoids in this region was explained based on the fact that DMF would accumulate rapidly in the inner extruding stream as it underwent mass-exchange with water in the inner bath. Such activity rendered effectively the coagulant became effectively a soft one. As a result, macrovoids was eliminated and the inner surface became porous.
關鍵字 PVDF;Hollow Fiber;Membrane;Morphology;NIPS
語言 en
ISSN
期刊性質 國內
收錄於 ESCI
產學合作
通訊作者 Liao-Ping Cheng
審稿制度 是
國別 TWN
公開徵稿
出版型式 ,電子版,紙本
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/116206 )