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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and characterization of polysulfone-cyclodextrin composite nanofiltration membrane: Solvent effect
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Preparation and characterization of polysulfone-cyclodextrin composite nanofiltration membrane: Solvent effect

机译：聚砜-环糊精复合纳滤膜的制备与表征：溶剂效应

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摘要

α-Cyclodextrin membranes were prepared by the phase inversion method using four types of casting solvents such as N-methyl pyrrolidone (NMP), dimethyl sulfoxide (DMSO), dimethyl acetamide (DMAc), and dimethyl formamide (DMF) herein-after termed as α-CD-NMP, α-CD-DMSO, α-CD-DMAc, and α-CD-DMF, respectively. The membranes were characterized by IR, XRD, TGA-DTA, DSC, and SEM analysis and show that solvents like NMP, DMA, DMF give good uniform morphological membranes and are better than that of DMSO. Thermal decompositions of the pure polymer and composite membranes indicate different range of thermal degradation of the membrane. This study reveals that the casting solvents NMP, DMF, DMAC have nearly same significant effect on morphology and other properties of the membranes. This is explained in terms of demixing behavior of the polymer and the combined effect of solvent volatility and polymer-solvent interactions as estimated from Hansen solubility parameter. Solvent hydrophobicity also affects the performance of the membrane and can be determined in terms of water permeability.
机译：α-环糊精膜是通过相转化法使用以下四种类型的浇铸溶剂制备的，例如N-甲基吡咯烷酮（NMP），二甲基亚砜（DMSO），二甲基乙酰胺（DMAc）和二甲基甲酰胺（DMF），以下称为α-CD-NMP，α-CD-DMSO，α-CD-DMAc和α-CD-DMF。通过IR，XRD，TGA-DTA，DSC和SEM分析对膜进行了表征，结果表明NMP，DMA，DMF等溶剂可提供良好的均匀形貌膜，并且优于DMSO。纯聚合物和复合膜的热分解表明膜的热降解范围不同。这项研究表明，浇铸溶剂NMP，DMF，DMAC对膜的形态和其他性能具有几乎相同的显着影响。可以根据Hansen溶解度参数估算的聚合物的混合行为以及溶剂挥发度和聚合物-溶剂相互作用的综合作用来解释这一点。溶剂疏水性也会影响膜的性能，可以通过水渗透性来确定。

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