頁籤選單縮合
題名 | Influence of Interior and Exterior Coagulant Solution on Morphology of Polyacrylonitrile Hollow Fibers= |
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作者 | Yu, D. G.; Liang, J. J.; Wei, C. W.; |
期刊 | 紡織綜合研究期刊 |
出版日期 | 20150100 |
卷期 | 25:1 2015.01[民104.01] |
頁次 | 頁1-5 |
分類號 | 478.1 |
語文 | eng |
關鍵詞 | Hollow fibers; Blood dialysis; Ultrafiltration; Reverse osmosis; Core liquid; |
英文摘要 | Recently, hollow fibers have been used for blood dialysis, for fluid separators based on the principles of ultrafiltration, and reverse osmosis. Such a hollow fiber should have a uniform configuration because when used, for instance, for blood dialysis, in contrast the pressure the interior of hollow fiber is usually larger than the exterior. If the hollow fiber is not uniform in thickness, there is a possibility that the hollow fiber may be broken at its thinnest part. Also, it is known that when the cross section of the hollow fiber departs significantly from that of a true circle, blood is apt to coagulate in the hollow fiber. The present study is based upon the discovery that satisfactory results can be obtained by using special conditions for spinning. A substantially chilly water solution is used as the core liquid in the production of the hollow fiber. The spinning solution which consists of the high molecular weight dissolved in a polar solvent(DMF) is extruded from an annular slit to from a sheath and simultaneously, the chilly water core liquid is extruded into the interior portion of the spun sheath, the key to obtaining result is the utilization of the principle of postpone coagulation. The solvent of the spinning solution and the aqueous solution (water/DMF) of the core are separated from each other into phase by the phenomenon. Accordingly, unfavorable mutual diffusion between the core liquid and sheath is suppressed. |
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