Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/5202
Title: Cation hydration in hydrogelic polyacrylamide-phosphoric acid network: A study by Raman spectroscopy
Authors: Costa, A. M. Amorim da 
Amado, A. M. 
Keywords: Cation hydration; Polyacrylamide-phosphoric acid network; Raman spectra
Issue Date: 2001
Citation: Solid State Ionics. 145:1-4 (2001) 79-84
Abstract: The effects upon the structure and morphology of adding lithium, calcium and magnesium chlorides to a phosphoric acid/polyacrylamide 2:1 molar ratio proton conducting hydrogel are examined by observing the changes in the vibrational features of the polyacrylamide chain, in the phosphate group and in the interstitial water molecules as a function of the concentration and the cationic nature of the additive, at 295 K. On adding H3PO4 to the polyacrylamide hydrogel matrix, the amide groups become more accessible and the polyacrylamide-phosphoric acid network behaves like structure-makers promoting a larger association in the [`]bulk' liquid water molecules.
URI: http://hdl.handle.net/10316/5202
DOI: 10.1016/S0167-2738(01)00916-X
Rights: openAccess
Appears in Collections:FCTUC Química - Artigos em Revistas Internacionais

Files in This Item:
File Description SizeFormat
filebc371c951c8344b4a523255994a49f40.pdf156.6 kBAdobe PDFView/Open
Show full item record

Page view(s)

273
checked on Jun 10, 2021

Download(s) 50

357
checked on Jun 10, 2021

Google ScholarTM

Check

Altmetric

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.