Molecular design of amphiphilic triblock copolymers as additives for high performance poly(vinyl chloride) ultrafiltration membranes.

Hasan Alshammari, Maral Ghahramani, Alireza Sharif

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Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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3 authors.

Hasan AlshammariDepartment of Polymer Reaction Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, 14155/143, Iran.

Maral GhahramaniDepartment of Polymer Reaction Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, 14155/143, Iran. maral.ghahramani@modares.ac.ir.

Alireza SharifDepartment of Polymer Reaction Engineering, Faculty of Chemical Engineering, Tarbiat Modares University, Tehran, 14155/143, Iran. asharif@modares.ac.ir.

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6 · The paper itself

Abstract

Amphiphilic triblock copolymers (TBCs) of poly(styrene)-b-polyethylene glycol-b-poly(styrene) (PS-b-PEG-b-PS) were synthesized by atom transfer radical polymerization (ATRP) and added to poly(vinyl chloride) (PVC) to prepare ultrafiltration (UF) blend membranes with superior water treatment efficiency. Compared to neat PVC, the blend membranes showed higher surface and bulk porosity, mean pore size, and surface hydrophilicity. These, attributed to the surface segregation of TBCs during membrane preparation, resulted in higher pure water flux (PWF), sodium alginate rejection, and fouling resistance for the blend membranes. The molecular weight (MW) of the hydrophilic (PEG) and hydrophobic (PS) blocks of the TBCs had significant influences on the PWF and fouling resistance of the membranes. Increasing the MW of PEG from 1000 g/mol to 4000 g/mol led to an improvement in the PWF and fouling resistance. However, TBCs containing PS with medium MW resulted in blend membranes with PWF of 1000 L.m

Indexed as

Amphiphilic triblock copolymerAntifouling propertiesBlend membranePolyvinyl chlorideUltrafiltration

Identifiers

PMID41298772

DOI10.1016/j.memsci.2017.01.051

PMCPMC12749738

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