Related Experiment Video
Updated: Dec 25, 2025
Electrophoretic Crystallization of Ultrathin High-performance Metal-organic Framework Membranes
Published on: August 16, 2018
Novel N-p-carboxy benzyl chitosan/poly (vinyl alcohol/functionalized zeolite mixed matrix membranes for DMFC
Faizah Altaf1, Rida Batool1, Rohama Gill2
1Department of Environmental Sciences, Fatima Jinnah Women University, Rawalpindi, 46000, Pakistan; School of Materials Science and Engineering, Georgia Institute of Technology, North Avenue, Atlanta, GA, 30332, USA; Department of Physics, COMSATS University Islamabad, Lahore Campus, Lahore, 54000, Pakistan.
Abstract:
The novel N-p-carboxy benzyl chitosan (CBC)/ poly (vinyl alcohol) (PVA) based mixed matrix membranes (MMMs) filled with surface-modified zeolite have been prepared using the dissolution casting technique. The applicability of prepared MMMs for direct methanol fuel cell (DMFC) was investigated in terms of water uptake, methanol permeation, and proton conductivity by changing filler content (10-50 wt. %). The zeolite was modified by silane coupling agent, 3-mercaptopropyltrimethoxysilane (MPTMS). The resultant modified zeolite (MZ) was incorporated into CBC/PVA blend to obtain mixed matrix PEMs. The functional group, structural properties, morphological and topographical investigation of MMMs were examined using Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), and Scanning electron microscopy (SEM) respectively. The prepared MMMs exhibited a remarkable decrease in methanol permeability of 2.3 × 10-7 cm2/s with C-CPMZ50. The maximum value of proton conductivity of 0.0527 Scm-1, was shown by C-CMPZ10. The prepared PEMs also displayed good stability during long term operating time.
