ATR-FTIR studies on ion interaction of lithium perchlorate in polyacrylate/poly(ethylene oxide) blends.
The interaction behaviours between components of polyacrylate (PAc)/poly(ethylene oxide) (PEO) and lithium perchlorate (LiClO(4)) were investigated in detail by Attenuated Total Reflectance (ATR)-Fourier Transformed Infrared (FTIR) spectroscopy. Solution cast films of the PAc/PEO and PAc/PEO/LiClO(4) 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/LiClO(4) 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 nu(C-O-C) and omega(CH(2)) 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 LiClO(4) does not enhance the compatibility of PAc/PEO blend.
Sim
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LH
Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Malaysia. marialhsim@yahoo.co.uk
Gan
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SN
Chan
C H
CH
Yahya
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R
D000180:Acrylic Resins / Q000737:chemistry*; D007477:Ions / Q000737:chemistry; D018020:Lithium Compounds / Q000737:chemistry*; D010472:Perchlorates / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
D000180:Acrylic Resins; D007477:Ions; D018020:Lithium Compounds; D010472:Perchlorates; D011092:Polyethylene Glycols; C006903:carbopol 940; C054684:lithium perchlorate