Preparation, characterization and application of functional polyethersulfone membranes blended with poly (acrylic acid) gels
Preparation, characterization and application of functional polyethersulfone membranes blended with poly (acrylic acid) gels
复制标题
聚丙烯酸凝胶共混功能聚醚砜膜的制备、表征及应用
DOI：
10.1016/j.memsci.2009.03.055
复制
发表时间：
2009-07
影响因子：
9.5
通讯作者：
Wei Qiang
中科院分区：
文献类型：
--
作者：
Qian Bosi;Li Jie;Zhao Changsheng;Fang Baohong;Wei Qiang
本文提出了一种通过共混亚微米级交联型聚丙烯酸(PAA)凝胶制备具有pH敏感性和离子交换能力的功能性聚醚砜(PES)膜的简化方法。以丙烯酸为原料，二甲基乙酰胺(DMAC)为溶剂，在强搅拌条件下进行溶液聚合，合成了粒径为250~3000 nm的PAA凝胶。随着搅拌速度的增加，凝胶的尺寸增大。PAA凝胶溶液可以直接与PES溶液(以DMAC为溶剂)共混，通过相分离技术制备膜。PAA凝胶共混后，PES膜的形态发生了很大的变化，指状结构变为海绵状结构。共混膜具有明显的pH敏感性和pH可逆性，在pH为3~8时出现pH阀效应。随着凝胶粒径的增大，膜的pH敏感性增大；在酸性条件下，随着凝胶用量的增加，膜的水通量增大。渗透实验结果表明，酸性氨基酸溶液的渗透通量大于碱性氨基酸溶液。Cu2+离子交换实验表明，该膜能与金属离子结合，具有作为离子交换膜的潜力。
In this paper, we provide a simplified method to prepare functional polyethersulfone (PES) membranes with pH sensitivity and ion-exchange capacity by blending cross-linked poly (acrylic acid) (PAA) sub-micrometer-scale gels. The PAA gels were synthesized through the solution polymerization of acrylic acids in dimethylacetamide (DMAC) under strong agitation, the size of the gels ranged from about 250 to 3000nm. With the increase of the agitation rate, the gel size increased. The PAA gel solution can be directly blended with PES solution (using DMAC as the solvent) to prepare membrane using a phase separation technique. After blending the PAA gels, the morphology of the PES membrane was substantially altered; and the finger-like structure became a sponge-like structure. The blended PES membranes showed evident pH sensitivity and pH reversibility; and the pH-valve effect was observed at pH between 3 and 8. With the increase of the gel size, the pH sensitivity increased; and with the increase of the gel amount blended in the membrane, the water flux increased under acid conditions. The permeability results suggested that the flux of acidic amino acid solution was higher than basic amino acid solution. The Cu2+ion-exchange experiment indicated that the membranes could bind metal ions, and had potential to be used as ion-exchange membranes.
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影响因子：
8.6
作者：
R. F. Childs;A. M. Mika;A. Pandey;Christopher T. C. McCrory;S. Mouton;J. M. Dickson
通讯作者：
R. F. Childs;A. M. Mika;A. Pandey;Christopher T. C. McCrory;S. Mouton;J. M. Dickson
聚醚砜/聚丙烯腈-丙烯酸共混膜表面接枝牛血清白蛋白对聚醚砜膜的改性
影响因子：
9.5
作者：
Fang, Baohong;Ling, Qiyao;Zhao, Changsheng
通讯作者：
Zhao, Changsheng
DOI：
--
发表时间：
1991-01
期刊：
--
影响因子：
--
作者：
R. Baker
通讯作者：
R. Baker
影响因子：
9.5
作者：
M. Ulbricht;M. Riedel;U. Marx
通讯作者：
M. Ulbricht;M. Riedel;U. Marx
影响因子：
9.5
作者：
S. Suryanarayan;A. M. Mika;R. F. Childs
通讯作者：
S. Suryanarayan;A. M. Mika;R. F. Childs