Strong effect of precursor preparation on the morphology of semicrystalline phase inversion poly(vinylidene fluoride) membranes

doi:10.1016/j.memsci.2005.07.043

淡江大學機構典藏 > 工學院 > 化學工程與材料工程學系暨研究所 > 期刊論文 > Item 987654321/44183

請使用永久網址來引用或連結此文件: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/44183

題名:	Strong effect of precursor preparation on the morphology of semicrystalline phase inversion poly(vinylidene fluoride) membranes
作者:	Lin, Dar-jong;Beltsios, Konstantinos;Young, Tai-horng;Jeng, Yi-su;Cheng, Liao-ping
貢獻者:	淡江大學化學工程與材料工程學系
關鍵詞:	Precursor preparation;Poly(vinylidene fluoride);Membranes;Phase inversion;Phase separation
日期:	2006-04
上傳時間:	2010-03-09 10:01:10 (UTC+8)
出版者:	Amsterdam: Elsevier BV
摘要:	This work documents the role of precursor preparation as an overlooked important factor in the control of membrane structures obtained by the phase inversion (PI) of solutions of crystallizable polymers. The effect of precursor-solution preparation temperature on the structure of a phase inversion poly(vinylidene fluoride) (PVDF) membrane is examined. The phase inversion example explored is the coagulation of a PVDF solution in dimethyl formamide (DMF) by the action of 1-octanol, which is a soft non-solvent. Polymer dissolution temperature is varied from 50 to 110 °C and the immediate consequence is a substantial variation in the density of nuclei available for the initiation of crystallization. Membrane structure is defined through a competition between solid–liquid (s–l) and liquid–liquid (l–l) equilibria; such competition can be strongly affected by changes in the density of crystallization nuclei. As a result, it is found possible to generate a wide spectrum of membrane morphologies without resorting to a variation of any of the standard parameters, such as dope and coagulant compositions and temperatures, usually employed for the control of phase inversion membrane morphology. It is also found that aging time can be used as a further structure-control parameter and a ‘maturation time–dissolution temperature’ equivalence is demonstrated.
關聯:	Journal of Membrane Science 274(1-2), pp.64-72
DOI:	10.1016/j.memsci.2005.07.043
顯示於類別:	[化學工程與材料工程學系暨研究所] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
		0Kb	Unknown	400	檢視/開啟
1-s2.0-S0376738805005843-main.pdf		1073Kb	Adobe PDF	0	檢視/開啟

在機構典藏中所有的資料項目都受到原著作權保護.

TAIR相關文章

資料載入中.....