ItemArticle

Influence of arecanut organic residue on the dielectric behavior of chitosan-PVA polymer blends: A synergistic approach

Title
Influence of arecanut organic residue on the dielectric behavior of chitosan-PVA polymer blends: A synergistic approach
Creator
Jose, Jasmine; Binish, C.J.; Johns, Jobish; Harisha, G.; Murugendrappa, M.V.; Chundattu, Sony J; Vijayasankar, V.A.
Description
Arecanut organic residue (AR) incorporated polyvinyl alcohol (PVA)-chitosan (CH) films were successfully synthesized using the solvent casting method, aiming to enhance structural rigidity and dielectric performance. The novelty of this work lies in utilizing AR, a sustainable agricultural byproduct, as a natural functional additive to enhance the dielectric and thermal stability of PVAchitosan blends. This eco-friendly approach introduces a biogenic interfacial modifier that improves polymer compatibility and performance without relying on synthetic fillers or chemical cross-linkers. FTIR spectra revealed the existence of cross-linking between PVA, chitosan and AR. Thermogravimetric analysis revealed that AR-PVA-CH films exhibited enhanced thermal stability compared to pure PVA, chitosan and PVA-CH blend. The dielectric constant, dielectric loss, DC conductivity, polarization and permittivity of pure PVA, pure chitosan, PVA-CH and AR-PVA-CH films were analysed in the frequency range from 100Hz to 100kHz. The optimized formulation (AR-C4) exhibited a maximum dielectric constant of 224.31 at 1kHz, significantly higher than that of the pristine PVACH blend. The improvement in thermal stability has also been emphasized by indicating the increase in the T?? value from 279.66C for PVACH to 358.37C for AR-C4. Furthermore, the enhancement in AC conductivity from 1.23 10?10 S/m for the PVACH blend to 5.93 108 S/m for AR-C5 has been mentioned, demonstrating the synergistic influence of arecanut residue on charge transport and interfacial polarization. This research showcases that AR-induced structural changes in PVA-chitosan films lead to a notable improvement in their dielectric properties, making them promising candidates for advanced dielectric and thermal applications. The Polymer Society, Taipei 2025.
Source
Journal of Polymer Research;Volume;33;Issue;1;Article No.;3;
Date
01-01-2026
Publisher
Springer Science and Business Media B.V.
Subject
Arecanut; Chitosan; Dielectric properties; PVA; Solvent casting
Coverage
Jose J., Department of Chemistry, Christ University, Bengaluru, 560029, India; Binish C.J., Department of Chemistry, Christ University, Bengaluru, 560029, India; Johns J., Department of Physics, Rajarajeswari College of Engineering, Mysore Road, Bengaluru, 560074, India; Harisha G., Department of Physics, SJC Institute of Technology, Karnataka, Chickballapur, 562101, India; Murugendrappa M.V., Department of Physics, BMS College of Engineering, Bangalore, 560019, India; Chundattu S.J., Department of Sciences and Humanities, Christ University, Bengaluru, 560074, India; Vijayasankar V.A., Department of Chemistry, Christ University, Bengaluru, 560029, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 10229760; CODEN: JPORE
Format
online
Language
English
Type
Article

Citation

Jose, Jasmine; Binish, C.J.; Johns, Jobish; Harisha, G.; Murugendrappa, M.V.; Chundattu, Sony J; Vijayasankar, V.A., “Influence of arecanut organic residue on the dielectric behavior of chitosan-PVA polymer blends: A synergistic approach,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 19, 2026, https://archives.christuniversity.in/items/show/21924.

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