Preparation of microporous poly(VDF-co-HFP) membranes by template-leaching method
學年 98
學期 2
出版（發表）日期 2010-04-01
作品名稱 Preparation of microporous poly(VDF-co-HFP) membranes by template-leaching method
作品名稱（其他語言）
著者 Chang, Hsu-Hsien; Yao, Liang-Chin; Lin, Dar-Jong; Cheng, Liao-Ping
單位 淡江大學化學工程與材料工程學系
出版者 Kidlington: Pergamon
著錄名稱、卷期、頁數 Separation and Purification Technology 72(2), pp. 156-166
摘要 The copolymer of vinylidene fluoride and hexafluoro propylene, poly(VDF–HFP), and the terpolymer of vinylidene fluoride, tetrafluoro ethylene, and hexafluoro propylene, poly(VDF–TEF–HFP), were solution blended at first to form dense composite films. Then, 90% acetone aqueous solution was used to leach out the terpolymer in the film at 5 °C. By varying the fraction of terpolymer in the blend and the leaching condition, microporousmembranes with different porous morphology were produced, as revealed by SEM imaging. When the terpolymer content in the blend was lower than 30 wt%, low porosity (e.g., 24%) asymmetric membranes were obtained. On the other hand, when the terpolymer content approached 50%, skinless membranes with uniform pore distribution (pore size, ca. 1 μm) were produced. These skinless membranes demonstrate high tensile strengths (∼6 MPa) and water fluxes (3000–8000 LMH) that are potentially applicable to micro-filtration operations. Furthermore, crystallinities of the membranes were determined both by X-ray diffractometry and differential scanning calorimetry. Both methods indicated crystallinity near 24%, typical of poly(VDF–HFP) polymer in different forms.
關鍵字 Poly(vinylidene fluoride); Porous membrane; Copolymer; Polymer blend
語言 en
ISSN 1383-5866
期刊性質 國外
收錄於 SCI
產學合作
通訊作者 Cheng, Liao-Ping
審稿制度
國別 GBR
公開徵稿
出版型式 紙本
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