Boosting permeation and separation characteristics of polyethersulfone ultrafiltration membranes by structure modification via dual-PVP pore formers
學年 110
學期 2
出版（發表）日期 2022-02-15
作品名稱 Boosting permeation and separation characteristics of polyethersulfone ultrafiltration membranes by structure modification via dual-PVP pore formers
作品名稱（其他語言）
著者 Chao-Chuan Ho; Jenn Fang Su
單位
出版者
著錄名稱、卷期、頁數 Polymer 241, 124560
摘要 Asymmetric polyethersulfone (PES) membranes were fabricated from the PES/γ-butyrolactone (GBL)/polyvinylpyrrolidone (PVP) system using non-solvent induced phase separation (NIPS) process. Two types of PVP with different molecular weights (PVP–K30 and PVP-K15) were added as dual pore-forming agents in the dope solution to modify the morphological, physical, permeation, and separation properties of the membranes. Our results demonstrate that high concentration of PVP-K30 in the dope favors the formation of a top skin layer and macrovoids, whereas the PVP-K15 can open the pores on the top surface, shrink the macrovoids, and transform the bi-continuous porous structure toward cellular pores. In the optimal composition of PVP additives (i.e. 8 wt% PVP-K30 and 5 wt% PVP-K15 in this work), the resulted PES membrane exhibits a water flux of 563 L m−2h−1 and a remarkable rejection coefficient over 99% for blue dextran solution, showing a promising potential in ultrafiltration applications.
關鍵字 Polyethersulfone;Membrane;Non-solvent induced phase separator (NIPS);Ultrafiltration;Polyvinylpyrrolidone;Molecular weight
語言 en
ISSN 0032-3861
期刊性質 國外
收錄於
產學合作
通訊作者
審稿制度 否
國別 GBR
公開徵稿
出版型式 ,電子版
相關連結

機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/122541 )