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Isoporous Membranes from Novel Polystyrene- b-poly(4-vinylpyridine)- b-poly(solketal methacrylate) (PS- b-P4VP- b-PSMA) Triblock Terpolymers and Their Post-Modification

Isoporous Membranes from Novel Polystyrene- b-poly(4-vinylpyridine)- b-poly(solketal methacrylate) (PS- b-P4VP- b-PSMA) Triblock Terpolymers and Their Post-Modification

Sarah Saleem, Sofia Rangou, Clarissa Abetz, Volkan Filiz, Volker Abetz

Polymers (Basel). 2019 Dec 26;12(1):41.

PMID: 31888039

Abstract:

In this paper, the formation of nanostructured triblock terpolymer polystyrene-b-poly(4-vinylpyridine)-b-poly(solketal methacrylate) (PS-b-P4VP-b-PSMA), polystyrene-b-poly(4-vinylpyridine)-b-poly(glyceryl methacrylate) (PS-b-P4VP-b-PGMA) membranes via block copolymer self-assembly followed by non-solvent-induced phase separation (SNIPS) is demonstrated. An increase in the hydrophilicity was observed after treatment of non-charged isoporous membranes from PS-b-P4VP-b-PSMA, through acidic hydrolysis of the hydrophobic poly(solketal methacrylate) PSMA block into a hydrophilic poly(glyceryl methacrylate) PGMA block, which contains two neighbored hydroxyl (-OH) groups per repeating unit. For the first time, PS-b-P4VP-b-PSMA triblock terpolymers with varying compositions were successfully synthesized by sequential living anionic polymerization. Composite membranes of PS-b-P4VP-b-PSMA and PS-b-P4VP-b-PGMA triblock terpolymers with ordered hexagonally packed cylindrical pores were developed. The morphology of the membranes was studied with scanning electron microscopy (SEM) and atomic force microscopy (AFM). PS-b-P4VP-b-PSMA triblock terpolymer membranes were further treated with acid (1 M HCl) to get polystyrene-b-poly(4-vinylpyridine)-b-poly(glyceryl methacrylate) (PS-b-P4VP-b-PGMA). Notably, the pristine porous membrane structure could be maintained even after acidic hydrolysis. It was found that membranes containing hydroxyl groups (PS-b-P4VP-b-PGMA) show a stable and higher water permeance than membranes without hydroxyl groups (PS-b-P4VP-b-PSMA), what is due to the increase in hydrophilicity. The membrane properties were analyzed further by contact angle, protein retention, and adsorption measurements.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
LS775139	Poly(9H-carbazole-9-ethyl methacrylate)			Price

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