Quaternized Polysulfone Cross-Linked N,N-Dimethyl Chitosan-Based Anion-Conducting Membranes

Anion-conducting membranes were obtained following the cross-linking of 1,4-diazoniabicycle[2.2.2]octane functionalized-polysulfone with N,N-dimethyl chitosan (DMC). The ionic conductivity of the composite membranes was controlled by the amount of DMC. The influence of the amount of DMC on water upt...

Descripción completa

Detalles Bibliográficos
Autores principales: Das, Gautam, Kim, Chae Yeon, Kang, Dong Ho, Kim, Bo Hyeon, Yoon, Hyon Hee
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2019
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6473834/
https://www.ncbi.nlm.nih.gov/pubmed/30960496
http://dx.doi.org/10.3390/polym11030512
Descripción
Sumario:Anion-conducting membranes were obtained following the cross-linking of 1,4-diazoniabicycle[2.2.2]octane functionalized-polysulfone with N,N-dimethyl chitosan (DMC). The ionic conductivity of the composite membranes was controlled by the amount of DMC. The influence of the amount of DMC on water uptake, swelling ratio, and ionic conductivity of the obtained membrane was studied. The membrane with 2 wt% DMC exhibited an ionic conductivity of 54 mS/cm and 94 mS/cm at 25 °C and 70 °C, respectively. The membrane showed good dimensional stability under hydrated conditions. A urea/O(2) fuel cell, built using the composite membrane, exhibited a peak power density of 4.4 mW/cm(2) with a current density of 16.22 mA/cm(2) at 70 °C.

Ejemplares similares