Authors: K Abdel Tawab M M Magida Sayeda M Ibrahim
Publish Date: 2011/03/24
Volume: 19, Issue: 2, Pages: 440-446
Abstract
Blends of water—soluble polymers based on Poly vinyl alcohol PVA and Polyethylene glycol PEG have been prepared by the solution casting technique The effect of various doses of γradiation on the structural properties of PVA/PEG polymer blends with all its compositions has been investigated From the visual observation of all the blend compositions it was found that the best compatibility of the blend is up to 40 PVA/60PEG The structure–Property behavior of all the prepared blends before and after γirradiation was investigated by IR Spectroscopy thermogravimetric analysis TGA mechanical properties and Scanning electron microscope SEM The gel content and the swelling behavior of the PVA/PEG blends were investigated It was found that the gel content increases with increasing irradiation dose and PVA concentration in the blend Swelling percent increased as the composition of PEG increased in the blend The results obtained by FTIR analysis and SEM confirm the existence of possible interaction between PVA and PEG homopolymers TGA of PVA/PEG blend before and after γirradiation showed that the unirradiated and irradiated PVA/PEG blends are more stable against thermal decomposition than pure PVA Improvement in tensile mechanical properties of PVA/PEG blends was occurred
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