A Study of FTIR and some Mechanical Properties of Sodium Iodide (NaI) Salt Filled Polymer Polyvinyl Alcohol (PVA) Films

Abstract

The effect of Sodium Iodide (NaI) salt on mechanical properties of polyvinyl alcohol (PVA) was studied in this work. The interaction between (NaI) salt and polymer (PVA) was investigated by (FTIR) spectroscopy. The effect of (NaI) salt on the mechanical properties of the polymer (PVA) was studied by hardness and tensile tests. FTIR spectra analysis of pure and (NaI) filled (PVA) films showed that the vibrational modes have changed due to the effect of filler salt in the polymer (PVA). Hardness test showed that the hardness increases unsystematically with increasing the weight ratio of added sodium iodide salt except the weight ratio of (16 wt %) compared with pure (PVA) film, while the experimental results of the tensile test for (PVA-NaI) composite films showed unsystematic change of tensile strength, elongation at break and Young's modulus after filling with different weight ratios of (NaI) salt compared with pure (PVA) film.

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“…However, there no peaks were found at 1596 cm −1 , indicating the absence of C=O vibrations in the PVA films. Besides, it is worth noting that the appearance of peaks at 1415 and 1329 cm −1 for pure PVA film is ascribed to the bending and the wagging vibration of –CH 2 , respectively 39 . The peak at 1293 cm −1 was attributed to the C–O stretching vibration, whereas the band peak at 1128 cm −1 was assigned to the stretching vibration of glycoside bonds in the polysaccharide (asymmetric C–O–C).…”

“…Besides, it is worth noting that the appearance of peaks at 1415 and 1329 cm −1 for pure PVA film is ascribed to the bending and the wagging vibration of -CH 2 , respectively. 39 The peak at 1293 cm −1 was attributed to the C-O stretching vibration, whereas the band peak at 1128 cm −1 was assigned to the stretching vibration of glycoside bonds in the polysaccharide (asymmetric C-O-C). In addition, the strong and sharp peaks at 1086 and 1024 cm −1 are related to the stretching vibrations of the C-C and the C-O bonds of the glycosidic linkage.…”