ATR-FTIR studies on ion interaction of lithium perchlorate in polyacrylate/poly(ethylene oxide) blends

Sim, L.H. and Gan, S.N. and Chan, C.H. and Yahya, Rosiyah (2010) ATR-FTIR studies on ion interaction of lithium perchlorate in polyacrylate/poly(ethylene oxide) blends. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 76 (3-4). pp. 287-292. ISSN 1386-1425, DOI

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The interaction behaviours between components of polyacrylate (PAc)/poly(ethylene oxide) (PEO) and lithium perchlorate (LiClO4) were investigated in detail by Attenuated Total Reflectance (ATR)-Fourier Transformed Infrared (FTIR) spectroscopy. Solution cast films of the PAc/PEO and PAc/PEO/LiClO4 were examined. No obvious shifting of the characteristic ether and ester group stretching modes of PEO and PAc was observed, indicating incompatibility of the binary PAc/PEO blend. The spectroscopic studies on the PAc/PEO/LiClO4 blends reveal that Li+ ions coordinate individually to the polymer components at the ether oxygen of PEO and the C-O of the ester group of PAc. Frequency changes observed on the ν(C-O-C) and �(CH2) of PEO confirm the coordination between PEO and Li+ ions resulting in crystallinity suppression of PEO. The absence of experimental evidence on the formation of PEO-Li+-PAc complexes suggests that LiClO4 does not enhance the compatibility of PAc/PEO blend.

Item Type: Article
Uncontrolled Keywords: FTIR Ion-dipole interaction Lithium perchlorate Poly(ethylene oxide) Polyacrylate ATR FTIR Attenuated total reflectance Crystallinities Ester groups Ethylene oxides Experimental evidence Fourier Frequency changes Ion interactions Ion-dipole interactions Polymer components Solution-cast films Spectroscopic studies Stretching modes Complexation Coordination reactions Esterification Esters Ethers Ethylene Infrared spectroscopy Ions Oxygen Polyethylene oxides Spectroscopic analysis Lithium acrylic acid resin carbopol 940 ion lithium derivative macrogol derivative perchloric acid article chemistry Acrylic Resins Lithium Compounds Polyethylene Glycols Spectroscopy, Fourier Transform Infrared
Subjects: Q Science > QD Chemistry
Divisions: Faculty of Science > Department of Chemistry
Depositing User: miss munirah saadom
Date Deposited: 05 Jul 2013 00:49
Last Modified: 31 Jul 2019 03:31

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