Miscibility, water uptake, ion exchange capacity, conductivity and dielectric studies of poly(methyl methacrylate) and cellulose acetate blends

ABSTRACT In the last few decades, polymer blends with good miscibility and conductivity have been the focus of study for material scientists. Here, polymer blends of Poly(methyl methacrylate) (PMMA) and Cellulose acetate (CA) of varying blend compositions have been prepared by solution casting metho...

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Bibliographic Details
Published in:Journal of applied polymer science 2013-12, Vol.130 (5), p.3074-3081
Main Authors: Jois, H. S. Sreekantha, Bhat, Denthaje Krishna
Format: Article
Language:English
Subjects:
Applied sciences
Blends
Cellulose acetate
Differential scanning calorimetry
differential scanning calorimetry (DSC)
Exact sciences and technology
Fourier transforms
Materials science
Miscibility
Natural polymers
Physicochemistry of polymers
Polymer blends
Polymers
Polymethyl methacrylates
properties and characterization
Starch and polysaccharides
Uptakes
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Summary:ABSTRACT In the last few decades, polymer blends with good miscibility and conductivity have been the focus of study for material scientists. Here, polymer blends of Poly(methyl methacrylate) (PMMA) and Cellulose acetate (CA) of varying blend compositions have been prepared by solution casting method and their miscibility, water uptake, ion exchange capacity (IEC) proton conductivity, and dielectric properties have been studied. Dimethyl formamide (DMF) was used as solvent. Fourier transform infrared spectra (FTIR) and Differential scanning calorimetry (DSC) measurements have been used to analyze the miscibility of the blends. Up to 50/50 PMMA/CA, water uptake showed an increasing trend and for other compositions the value decreased. Ion exchange capacity and conductivity of the blends decreased with increase in PMMA content of the blends. The variations in the blend properties have been attributed to the presence of specific interactions and exchangeable groups in the blend system. The proton conductivity of the blends is in the order of 10−3 S cm−1. Impedance analysis of the blends indicated the absence of any relaxation phenomenon in the blend system. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 3074–3081, 2013
ISSN:0021-8995
1097-4628
DOI:10.1002/app.39535