Eval membranes for blood dialysis
Eval membranes for blood dialysis
复制标题
用于血液透析的 Eval 膜
DOI：
10.1002/masy.19900330116
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发表时间：
1990
期刊：
影响因子：
--
通讯作者：
T. Young
中科院分区：
文献类型：
--
作者：
Leo;T. Young
采用干法和湿法两种方法制备血液透析用乙烯-乙烯醇共聚物(EVAL)膜。
通过干法制备不对称和对称、致密或多孔膜。使用溶解度曲线模型解释膜结构与实验变量之间的关系。该模型成功地预测了各种条件下的膜结构，包括环境温度、溶剂体系和聚合物溶液温度的变化。对于湿法工艺，浇铸溶液在沉淀浴（水）中凝固。获得了三种不同的结构：手指型、海绵型和颗粒粘合型。浊点实验和聚合物链段运动有助于理解和控制膜结构。显示了用于血液透析的 EVAL 膜的一些特性。它与商业化产品相当或更好。这项研究可能有助于确定其他聚合物制备膜的控制参数。
Both dry- and wet-process were employed for preparing membrane of ethylene-vinylalcohol copolymer (EVAL) for blood dialysis.
Asymmetric and symmetric, dense or porous membranes were prepared by the dry-process. The relationship between the structure of membranes and the experimental variables is explained by using a solubility curve model. This model predicts the membrane structure successfully under various conditions, including the change of temperature of the environment, the solvent system and the temperature of polymer solution. For wet-processes, the casting solutions were coagulated in a precipitation bath (water). Three different structures were obtained: finger type, sponge type and particle-bonded type. The cloud point experiment and the polymer segment motion help to understand and control the membrane structure. Some properties of the EVAL membrane for blood dialysis are shown. It is comparable with or better than the commercialized one. This study may prove useful in determing the controlling parameters for the preparation of membranes from other polymers.