Amphiphilic Block Copolymer of Poly(dimethylsiloxane) and Methoxypolyethylene Glycols for High-Permeable Polysulfone Membrane Preparation

Abstract

Poly(dimethylsiloxane)- block -methoxypolyethylene glycols (PDMS- b -mPEG) were synthesized by Steglich esterification. The high-permeable membrane (PSf/PDMS- b -mPEG) was prepared by using PDMS- b -mPEG as additives. The successful synthesis of PDMS- b -mPEG was confirmed by nuclear magnetic resonance. Field emission scanning electron microscopy images show that the distribution of finger-like macroporous and sponge-like macroporous can be modulated by controlling the ratio of the hydrophilic/hydrophobic components of additives. The distribution of additives and membrane wettability are validated with X-ray photoelectron spectroscopy and water contact angle test. The permeability of the blended membrane, especially for the membrane PSf/PDMS- b -mPEG1900 (M3), was remarkably improved. The water permeability of M3 (239.4 L/m 2 ·h·bar) was 6.6 times that of the unblended membrane M0 (42.5 L/m 2 ·h·bar). The findings of protein BSA filtration show that the flux recovery ratio of M3 is 89.2% at a BSA retention rate of about 80%, which demonstrates that the polysulfone membranes blended with PDMS- b -mPEG have excellent antifouling performance and extraordinary permeability.

Novel polysulfone/sulfonated polyaniline/niobium pentoxide polymer blend nanocomposite membranes for fuel cell applications

“…It also exhibits moderate reactivity in aromatic electrophilic substitutions and biocompatibility. [36][37][38][39][40] Polysulfone/polyaniline-poly(vinyl pyrrolidone) (PANI-PVP) nanocomposite facilitate water diffusion into the membrane pore and enhanced the hydrophilicity. 41 Polyaniline blended with polysulfone prepared by solution casting method exhibited moderately enhanced water hydrophilicity and used as a promising candidate for water filtration membrane.…”

“…Polysulfone (PSU) is an interesting aromatic polymer that possesses good physicochemical properties with excellent thermal and oxidative stabilities. It also exhibits moderate reactivity in aromatic electrophilic substitutions and biocompatibility 36–40 …”

One-step synthesis of amphiphilic copolymers PDMS-b-PEG using tris(pentafluorophenyl)borane and subsequent study of encapsulation and release of curcumin

“…There are several reports where SQP and CC methodologies have been most widely used to synthesize SS with PEG as a hydrophilic block; nevertheless, they involve several reaction steps. [36][37][38][39][40][41][42][43] In this context, we propose the use of tris(pentafluorophenyl)borane (BCF) as a catalyst for the assembly between PDMSOH (Hb block) and PEG (Hl block) in a one-step reaction. BCF is widely used due to its unique reactivity, selectivity, and stability in a large number of reactions such as boration, hydrogenation, polymerization, hydrosilylation, direct catalytic nucleophilic substitution of alcohols, and Piers-Rubinsztajn reaction, among others.…”

“…There are several reports where SQP and CC methodologies have been most widely used to synthesize SS with PEG as a hydrophilic block; nevertheless, they involve several reaction steps. 36–43…”