George Jenet, Kumar Vaidyanathan Vinoth
Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India.
Integrated Bioprocessing Laboratory, Department of Biotechnology, School of Bioengineering, SRM Institute of Science and Technology (SRM IST), Kattankulathur, 603 203, India.
Environ Res. 2023 Apr 15;223:115404. doi: 10.1016/j.envres.2023.115404. Epub 2023 Feb 4.
In this current study, poly (methyl vinyl ether maleic anhydride) (PMVEAMA), a sustainable additive, was incorporated into poly (ether-ether sulfone) (PEES) polymer to design a novel polymeric hybrid membrane for the efficient filtration of toxic pentachlorophenol (PCP) from an aqueous medium. Hydrophilic additives significantly altered the membrane's morphology, structure, porosity, water content, and flux performance compared to the bare PEES membrane. The influence of PMVEAMA on the structural modification of the synthesized polymer membrane was confirmed by SEM, ATR-FTIR, XRD, AFM, zeta potential and contact angle. Findings revealed that the addition of PMVEAMA to the PEES polymer enhances the porosity (17.7%-28.9%), water content (29.8%-39.8%), and pure water flux (186 Lmh to 349 Lmh). The effect of PMVEAMA concentration on the PEES membrane exhibited more finger like pores, better porosity and hydrophilicity, reduced surface roughness, fouling and increased permeability. The fouling studies exhibit an improved 57% PCP rejection and permeation flux of 22.3 Lmh due to the addition of the hydrophilic additive. Surprisingly, the incorporation of PMVEAMA into the bare PEES membrane resulted in a high flux recovery ratio of 73.7%. The antifouling properties and enhanced permeability of the PEES/PMVEAMA membrane indicates its potential application in water purification sectors for the efficient separation of contaminants.
在本研究中，将可持续添加剂聚（甲基乙烯基醚马来酸酐）（PMVEAMA）掺入聚（醚醚砜）（PEES）聚合物中，以设计一种新型聚合物混合膜，用于从水介质中高效过滤有毒的五氯苯酚（PCP）。与裸露的PEES膜相比，亲水性添加剂显著改变了膜的形态、结构、孔隙率、含水量和通量性能。通过扫描电子显微镜（SEM）、衰减全反射傅里叶变换红外光谱（ATR-FTIR）、X射线衍射（XRD）、原子力显微镜（AFM）、zeta电位和接触角证实了PMVEAMA对合成聚合物膜结构改性的影响。研究结果表明，向PEES聚合物中添加PMVEAMA可提高孔隙率（17.7%-28.9%）、含水量（29.8%-39.8%）和纯水通量（从186 Lmh提高到349 Lmh）。PMVEAMA浓度对PEES膜的影响表现为形成更多指状孔、更好的孔隙率和亲水性、降低表面粗糙度、减少污垢并提高渗透率。污垢研究表明，由于添加了亲水性添加剂，PCP截留率提高了57%，渗透通量为22.3 Lmh。令人惊讶的是，将PMVEAMA掺入裸露的PEES膜中可实现73.7%的高通量回收率。PEES/PMVEAMA膜的抗污染性能和增强的渗透性表明其在水净化领域用于高效分离污染物的潜在应用价值。
