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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of hydrophilic polysulfone membrane using polyacrylic acid with polyvinyl pyrrolidone
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Preparation of hydrophilic polysulfone membrane using polyacrylic acid with polyvinyl pyrrolidone

机译：聚丙烯酸与聚乙烯吡咯烷酮制备亲水性聚砜膜

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摘要

This study examined the consequences of the addition of polyvinyl pyrrolidone (PVP) of different molecular weights with constant molecular weight of polyacrylic acid (PAA) on the morphology and permeation properties of polysulfone (PSF) membranes. The asymmetric polymeric membranes were prepared by phase inversion process using PSF in N-methyl-2-pyrrolidone (NMP) as a solvent. The surface structure and morphology of the prepared membranes were analyzed by field-emission scanning electron microscope (FESEM) and atomic force microscopy (AFM). The pore number, average pore size and area of pores for all the membranes were determined by permeability method. These ultrafiltration membranes were subjected to characterizations such as measurement of pure water flux (PWF), compaction factor (CF), bovine serum albumin (BSA) rejection for finding the permeability performance, whereas equilibrium water content, contact angle, porosity, hydraulic resistance, and ion exchange capacity (IEC) are measured for evaluating the hydrophilicity. Results demonstrate that the flux performance of the membranes and morphological parameters own a crucial inter-relationship with the molecular weight of PVP. The membrane pore area and pore number were found to be increased by increasing molecular weight of PVP with constant molecular weight of PAA. A detailed comparative study was done with Chakrabarty et al. (J. Membr. Sci. 2008, 309, 209) and found better in almost all the aspects. All the resulting parameters were compared and concluded with the fact that addition of small amount of PAA in PSF/PVP/NMP casting solution can be better than addition of PVP alone. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41964.
机译：这项研究检查了添加不同分子量的聚乙烯吡咯烷酮（PVP）和恒定分子量的聚丙烯酸（PAA）对聚砜（PSF）膜的形态和渗透性能的影响。通过在N-甲基-2-吡咯烷酮（NMP）中的PSF作为溶剂，通过相转化法制备不对称聚合物膜。通过场发射扫描电子显微镜（FESEM）和原子力显微镜（AFM）分析了制备的膜的表面结构和形貌。所有膜的孔数，平均孔径和孔面积通过渗透法确定。对这些超滤膜进行了表征，例如测量纯净水通量（PWF），压实因子（CF），牛血清白蛋白（BSA）排阻，以发现渗透性能，而平衡水含量，接触角，孔隙率，水力阻力，测量离子交换容量（IEC）以评估亲水性。结果表明，膜的通量性能和形态参数与PVP的分子量具有至关重要的相互关系。发现膜孔面积和孔数通过在恒定分子量的PAA下增加PVP的分子量来增加。 Chakrabarty等人进行了详细的比较研究。 （J. Membr。Sci。2008，309，209），并且在几乎所有方面都发现更好。比较所有得出的参数，并得出结论，在PSF / PVP / NMP浇铸溶液中添加少量PAA可能比单独添加PVP更好。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41964。

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