期刊
JOURNAL OF COMPOSITE MATERIALS
卷 51, 期 13, 页码 1861-1873出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0021998316665162
关键词
Polymer nanocomposites; isobutylene-isoprene rubber; ethylene propylene diene monomer; cloisite 15A; mechanical properties; blend composition
资金
- Zolal Gostar Rooz (ZGR) Company
- Young Researchers and Elite Club, Marvdasht Branch, Islamic Azad University
A melt mixing method was used for preparation of immiscible isobutylene-isoprene rubber/ethylene propylene diene monomer blends and their polymer nanocomposites containing cloisite 15A nanoparticles. The morphology of nanocomposites was characterized by Fourier transform infrared spectroscopy and scanning electron microscope techniques. The dispersion of nanoclay in isobutylene-isoprene rubber/ethylene propylene diene monomer blends was studied by transmission electron microscopy and XRD analyses. Curing data of the prepared nanocomposites showed a decrease in scorch time (t(5)) and optimum cure time (t(90)) with increasing nanoclay content. Intercalation of rubber chains into the organoclay silicate layers was specified by d-spacing amount estimated according to the XRD results. Based on XRD results, a leftward shift towards lower diffraction angles in the organoclay characteristic peak was observed, indicating an increase in the d-spacing values in comparison with the pure organoclay. It confirms the intercalation of elastomer chains into the nanoclay galleries. The mechanical properties of the polymer nanocomposite specimens including hardness, fatigue strength, elongation at break, modulus and tensile strength were found to be better with increasing the nanoclay content. Also, resilience of the polymer nanocomposites decreased.
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