Development of Polymeric Membranes Based on Quaternized Polysulfones for AMFC Applications.

ABSTRACT: A series of quaternary ammonium-functionalized polysulfones were successfully synthesized using a chloromethylation two-step method. In particular, triethylammonium and trimethylammonium polysulfone derivatives with different functionalization degrees from 60% to 150% were investigated. NMR spectroscopic techniques were used to determine the degree of functionalization of the polymers. The possibility to predict the functionalization degree by a reaction tool based on a linear regression was highlighted. Anionic membranes with a good homogeneity of thickness were prepared using a doctor-blade casting method of functionalized polymers. The chemical-physical data showed that ion exchange capacity, water content, and wettability increase with the increase of functionalization degree. A higher

SUBMITTER: Carbone A 

PROVIDER: S-EPMC7077470 | biostudies-literature | 2020 Feb

REPOSITORIES: biostudies-literature