Volume 1, Issue 4
Miscibility, Conductivity and Dielectric Studies of Poly
(methyl methacrylate) and Cellulose acetate propionate Blends
Author(s): Denthaje Krishna Bhat1*, H.S. Sreekantha Jois1
- Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Srinivasnagar-575025, India.
Abstract: In the present era, material scientists are focusing on polymer blends with good miscibility and conductivity. Accordingly we report here, polymer blends of Poly (methyl methacrylate) and Cellulose acetate propionate of varying blend compositions prepared by solution casting method. The miscibility, water uptake, ion exchange capacity, proton conductivity and dielectric behavior of these blends have also been studied. The proton conductivity of the blends was found to be in the order of 10-3 S cm-1. Dimethyl formamide has been used as solvent. Fourier transform infrared spectra and differential scanning calorimetry measurements have been used to analyze the miscibility of the blends. Up to a PMMA:CAP composition of 50:50, water uptake amount of the blends showed an increasing trend. Combination of the results suggested that the variations in associated properties are due to intermolecular hydrogen bonding interaction between hydroxyl and carbonyl groups of CAP and PMMA respectively.
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AC impedance spectra of 50/50 PMMA/CAP blend at different temperatures.
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