Thermoreversible gelation of polybenzimidazole in phosphoric acid

dc.contributor.author	Sannigrahi, Arindam
dc.contributor.author	Arunbabu, Dhamodaran
dc.contributor.author	Jana, Tushar
dc.date.accessioned	2022-03-27T08:58:46Z
dc.date.available	2022-03-27T08:58:46Z
dc.date.issued	2006-11-24
dc.description.abstract	We report a study of thermoreversible gelation of polybenzimidazole (PBI) in phosphoric acid (PA). The PBI gel in PA exhibits fibrillar network morphology and reversible first order phase transition. The gelation rate is measured by the tube tilting method and found to depend both upon gelation concentration and gelation temperature. The UV-vis study demonstrates that the gelation process is a two-step process: conformational transformation and aggregation which produces crystallites for gel formation. The WAXS study supports the presence of crystallites in the gel. The PA doping level of the membrane increases significantly because of gelation. © 2006 WILEY-VCH Verlag GmbH & Co. KGaA.
dc.identifier.citation	Macromolecular Rapid Communications. v.27(22)
dc.identifier.issn	10221336
dc.identifier.uri	10.1002/marc.200600501
dc.identifier.uri	https://onlinelibrary.wiley.com/doi/10.1002/marc.200600501
dc.identifier.uri	https://dspace.uohyd.ac.in/handle/1/12201
dc.subject	Fuel cell
dc.subject	Gelation
dc.subject	Morphology
dc.subject	Polybenzimidazole
dc.subject	Proton exchange membrane
dc.title	Thermoreversible gelation of polybenzimidazole in phosphoric acid
dc.type	Journal. Article
dspace.entity.type

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