Composite proton conducting membranes from crosslinked poly(vinyl alcohol)/chitosan and silica particles containing poly(2‐acrylamido‐2‐methyl‐1‐propansulfonic acid)

• DOI: 10.1002/app.51989
• Publication Date: 2021-12-02T11:19:38Z
• Authors: Chonnakarn Panawong; Sawanya Tasarin; Pranorm Saejueng; Surangkhana Budso...
• Keywords: Vinyl alcohol; Glutaraldehyde; Thermogravimetric analysis

Abstract Proton conducting membranes based on crosslinked poly(vinyl alcohol) and chitosan were fabricated using sulfosuccinic acid (SSA) glutaraldehyde (GA) as crosslinking agents. A systematic study the effects of SSA, chitosan, GA membrane properties was conducted. The most promising then chosen to form composites with silica particles containing poly(2‐acrylamido‐2‐methyl‐1‐propanesulfonic acid) (PAMPS‐Si). Two different sizes PAMPS‐Si similar PAMPS contents synthesized from vinyltrimethoxysilane precursor following Stöber method. process followed by free radical polymerization 2‐acrylamido‐2‐methyl‐1‐propansulfonic acid. Field‐emission scanning electron microscopy, thermogravimetric analysis, Fourier‐transform infrared spectroscopy techniques used analyze sample. results revealed successful synthesis PAMPS‐Si. All prepared composite exhibited comparable water vapor absorption, uptake, ion exchange capacities. addition enhanced proton conductivity, value increased increasing loading. size did not significantly affect conductivity. These demonstrated good thermal oxidative stabilities.