Department of Chemistry, Faculty of Science, Universiti Putra Malaysia, Serdang, Selangor 43400, Malaysia E-mail:
Water Sci Technol. 2017 May;75(10):2422-2433. doi: 10.2166/wst.2017.122.
Neat cellulose acetate (CA) and CA/polysulfone (PSf) blend ultrafiltration membranes in the presence of polyvinylpyrrolidone as a pore former were prepared via a phase inversion technique. The prepared membranes were characterized by Fourier transform infrared, scanning electron microscopy, mechanical strength, water content, porosity, permeate flux and heavy metals (Pb, Cd, Zn and Ni) rejection to comprehend the impact of polymer blend composition and additive on the properties of the modified membranes. The water flux expanded by increasing of PSf content in the polymer composition. CA/PSf (60/40) had the highest flux among prepared membranes. Prepared blend membranes were able to remove heavy metals from water in the following order: Pb > Cd > Zn > Ni. The CA/PSf (80/20) blend membrane had great performance among prepared membranes due to the high heavy metals removal and permeate flux.
在添加聚乙烯吡咯烷酮作为致孔剂的情况下，通过相转化技术制备了具有规整纤维素乙酸酯（CA）和 CA/聚砜（PSf）共混超滤膜。通过傅里叶变换红外光谱、扫描电子显微镜、力学强度、含水量、孔隙率、渗透通量和重金属（Pb、Cd、Zn 和 Ni）截留率对所制备的膜进行了表征，以了解聚合物共混物组成和添加剂对改性膜性能的影响。水通量随着 PSf 含量在聚合物组成中的增加而增加。在制备的膜中，CA/PSf（60/40）具有最高的通量。所制备的共混膜能够按以下顺序从水中去除重金属：Pb>Cd>Zn>Ni。由于高重金属去除率和渗透通量，CA/PSf（80/20）共混膜在制备的膜中表现出优异的性能。
