ItemArticle

Tailoring natural rubber properties through CaO nanoparticle integration and curing technique

Title
Tailoring natural rubber properties through CaO nanoparticle integration and curing technique
Creator
Nibil, E.; Johns, Jobish; Binish, C.J.; Prakash, V.; Sujith, K.V.; Yeampon, N.; Athiyanathil, Sujith; Sham Aan, M.P.
Description
The present study investigates the development of natural rubber nanocomposites reinforced with calcium oxide nanoparticles and cured using pentane-1,5-diylidenediamine, a green crosslinker derived from glutaraldehyde and ammonia. calcium oxide nanoparticles (0.020.16wt%) were incorporated via latex blending, and composites were evaluated in both uncured and pentane-1,5-diylidenediamine -cured forms. Fourier-transform infrared spectroscopy confirmed that the calcium oxide nanoparticles were well dispersed and actively involved in crosslinking with the rubber matrix. Scanning electron microscopy showed that the cured composites had a more uniform surface and better distribution of nanoparticles. Mechanical testing revealed a remarkable tenfold increase in tensile strength from 0.217MPa to 8.478MPa and a significant improvement in elongation at break, rising from 666 to 1317% in the pentane-1,5-diylidenediamine -cured samples. The best mechanical performance was achieved at 0.10wt% calcium oxide. Dielectric measurements further highlighted an increase in permittivity and AC conductivity, especially in the cured composites, attributed to interfacial polarization and the formation of nanoparticle networks. Altogether, these results underline the synergistic benefits of calcium oxide nanoparticles and pentane-1,5-diylidenediamine curing in enhancing the structural, mechanical, and dielectric properties of natural rubber, making it a strong candidate for advanced elastomeric and dielectric applications. The Author(s), under exclusive licence to the Institute of Chemistry, Slovak Academy of Sciences 2026.
Source
Chemical Papers;
Date
01-01-2026
Publisher
Springer Science and Business Media Deutschland GmbH
Subject
AC conductivity; Elastomeric composites; PDD crosslinking; Sustainable materials
Coverage
Nibil E., Department of Chemistry & Centre Of Excellence in Materials Fabrication and Characterization, RV College of Engineering, Bangalore, India; Johns J., Department of Physics, Rajarajeswari College of Engineering, Bangalore, India; Binish C.J., Department of Chemistry, CHRIST-Deemed to Be University, Bangalore, India; Prakash V., Department of Physics, Payyanur College, Kerala, Payyanur, India; Sujith K.V., Department of Chemistry, Payyanur College, Kerala, Payyanur, India; Yeampon N., Sustainable Polymer & Innovative Composite Materials Research Group, Department of Chemistry, Faculty of Science, King Mongkuts University of Technology, Bangkok, Thonburi, Thailand; Athiyanathil S., Department of Chemistry, NIT, Kerala, Calicut, India; Sham Aan M.P., Department of Chemistry & Centre Of Excellence in Materials Fabrication and Characterization, RV College of Engineering, Bangalore, India
Rights
Restricted Access; Hardcopy may be available in the library
Relation
ISSN: 3666352; CODEN: CHPAE
Format
online
Language
English
Type
Article

Citation

Nibil, E.; Johns, Jobish; Binish, C.J.; Prakash, V.; Sujith, K.V.; Yeampon, N.; Athiyanathil, Sujith; Sham Aan, M.P., “Tailoring natural rubber properties through CaO nanoparticle integration and curing technique,” CHRIST (Deemed To Be University) Institutional Repository, accessed June 18, 2026, https://archives.christuniversity.in/items/show/21982.

Output Formats