@Article{JPM.2022.39.1-2.6,
AUTHOR = {RABIRANJAN MURMU, DEBASHIS ROY, HAREKRUSHNA SUTAR, PRAGYAN SENAPATI, SWETAK ABHISEK MOHAPATRA},
TITLE = {Effect of Sulfuric Acid on the Physiochemical Properties of Chitosan-PVA Blend for Direct Methanol Fuel Cell},
JOURNAL = {Journal of Polymer Materials},
VOLUME = {39},
YEAR = {2022},
NUMBER = {1-2},
PAGES = {89--109},
URL = {http://www.techscience.com/jpm/v39n1-2/55983},
ISSN = {0976-3449},
ABSTRACT = {In this work, we have successfully cross-linked the different weight ratio of Chitosan-PVA blend
with sulfuric acid. The effect of cross-linker on the properties of blends are studied by using
different experimental technique. The cross-linked membrane provides higher ion exchange
capacity due to the procurement of extra ionic hooping sites in the membrane. The compatibility
of the blends are confirmed from the FTIR and DSC analysis. The crosslinking reaction fastening
the phase transition behavior of the blends which reduces the glass transition temperature. The
highly compatiblized cross-linked blend provides higher tensile strength and lower modulus at
moderate temperature. The significant reduction of weight loss was observed in a cross-linked
membrane which enhances thermal stability of the blend. The group which are responsible for
higher methanol cross-over are consumed by the cross-linking reaction and a drastic reduction
of methanol cross-over was observed. The proton conductivity of the blends are obtained by
performing experiment in a four probe impedance analyzer and fitting the EIS data in an equivalent
circuit model. At moderate temperature, the cross-linked membrane provides higher proton
conductivity than the pure membrane and the proton transport was controlled by Grotthus
mechanism. The cross-linked membrane provides higher proton conductivity and membrane
selectivity which is beneficial for DMFC design.},
DOI = {10.32381/JPM.2022.39.1-2.6}
}