Single step fabrication of polymer/silicate porous composite membranes via water-glass induced phase inversion. Issue 9 (13th June 2019)

• Record Type: Journal Article
• Authors: Kollia, Eleni; Mastrotheodoros, George; Kosma, Vasiliki; Beltsios, Konstantinos G.
• Is Part Of: Polymer-plastics technology and materials. Volume 58:Issue 9(2019)
• Page Start: 957
• Page End: 966
• Publication Date: 2019-06-13
• Subjects: Phase inversion -- water-glass -- composite membranes -- Nylon 6-10 -- polysulfone -- silicate particles; Polymers -- Periodicals; Polymerization -- Periodicals; Plastics -- Periodicals; Plastics; Polymerization; Polymers; Periodicals; 668
• DOI: 10.1080/03602559.2018.1520257
• Languages: English
• ISSNs: 2574-0881

Abstract

ABSTRACT: Water-glass, a low-cost silica precursor solution, is used to produce mostly skinned, polymer–silicate composite membranes with a porous bulk. We explore primarily Nylon 6-10/formic acid dopes where the polymer solvent is an acid, and polysulfone/DMF dope as an example of a polymer dope based on a non-acidic water-miscible solvent. Elemental distribution of silicon in cross sections suggests compositional uniformity of the formed membranes with in some cases 20 wt. % of silicate load. Membranes formed can be used either as separation media or as precursors for compact polymers reinforced with silicate particles. Graphical Abstract: