Ghadhban Maryam Y, Majdi Hasan Shaker, Rashid Khalid T, Alsalhy Qusay F, Lakshmi D Shanthana, Salih Issam K, Figoli Alberto
Membrane Technology Research Unit, Chemical Engineering Department, University of Technology, Alsinaa Street 52, Baghdad 10066, Iraq.
Department of Chemical Engineering and Petroleum Industries, AlMustaqbal University College, Babylon 51001, Iraq.
Membranes (Basel). 2020 Mar 18;10(3):47. doi: 10.3390/membranes10030047.
In this work, a flat-sheet blend membrane was fabricated by a traditional phase inversion method, using the polymer blends poly phenyl sulfone (PPSU) and polyether sulfone (PES) for the ultrafiltration (UF) application. It was hypothesized that adding PES to the PPSU polymer blend would improve the properties of the PPSU membrane. The effect of the PES concentration on the blend membrane properties was investigated extensively. The characteristics of PPSU-PES blend membranes were investigated using atomic force microscopy (AFM), scanning electron microscopy (SEM), contact angle measure, and contaminant (dye) elimination efficiency. This study showed that PES clearly affected the structural formation of the blended membranes. A considerable increase in the average roughness (about 93%) was observed with the addition of 4% PES, with a higher mean pore size accompanied by a rise in the pores' density on the surface of the membrane. The addition of up to 4% PES had a significant influence on the hydrophilic character of the PPSU-PES membrane, by lowering the value of the contact angle (CA) (i.e., to 56.9°). The performance of the PPSU-PES composite membranes' UF performance was systematically investigated, and the membrane pure water permeability (PWP) was enhanced by 25% with the addition of 4% PES. The best separation removal factor achieved in the current investigation for dye (Drupel Black NT) was 96.62% for a PPSU-PES (16:4 wt./wt.%) membrane with a 50% feed dye concentration.
在本研究中，采用传统相转化法制备了平板共混膜，使用聚苯砜（PPSU）和聚醚砜（PES）的聚合物共混物用于超滤（UF）应用。假设向PPSU聚合物共混物中添加PES会改善PPSU膜的性能。广泛研究了PES浓度对共混膜性能的影响。使用原子力显微镜（AFM）、扫描电子显微镜（SEM）、接触角测量和污染物（染料）去除效率来研究PPSU-PES共混膜的特性。本研究表明，PES明显影响共混膜的结构形成。添加4%的PES时，平均粗糙度显著增加（约93%），同时平均孔径增大，膜表面孔隙密度增加。添加高达4%的PES对PPSU-PES膜的亲水性有显著影响，通过降低接触角（CA）值（即降至56.9°）。系统研究了PPSU-PES复合膜的超滤性能，添加4%的PES时，膜的纯水渗透率（PWP）提高了25%。在当前研究中，对于50%进料染料浓度的PPSU-PES（16:4 wt./wt.%）膜，对染料（Drupel Black NT）实现的最佳分离去除率为96.62%。
