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https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/115529
題名:
Strong effects of Tween 20 additive on the morphology and performance of poly(vinylidene fluoride) hollow-fiber membranes
作者:
Cheng, Liao-ping
關鍵詞:
fibers
;
membranes
;
morphology
;
phase behavior
;
surfactants
日期:
2016-11-09
上傳時間:
2018-11-08 12:10:39 (UTC+8)
出版者:
John Wiley & Sons
摘要:
Poly(vinylidene fluoride) (PVDF) hollow‐fiber membranes were prepared from a Tween 20/water/triethyl phosphate/PVDF system. The effects of Tween 20 on the morphology and properties of the membranes were explored. Field emission scanning electron microscopy imaging indicated the presence of skinlike layers on both surfaces of the membranes. In the cross section, a bicontinuous morphology comprised of interlocked crystallites was observed. As the dosage of Tween 20 was raised, the size and quantity of nanopores on the surfaces increased, and the morphology of the crystallites in the cross section changed from sheaflike to sticklike. Tween 20 was removed almost completely during the membrane‐formation process, as validated by Fourier transform infrared–attenuated total reflection and 1H‐NMR spectrometry. Dextran filtrations were preformed to demonstrate the potential applications of these membranes in separation processes. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2017, 134, 44600.
關聯:
Journal of Applied Polymer Science 134(11), 44600
DOI:
10.1002/app.44600
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[化學工程與材料工程學系暨研究所] 期刊論文
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