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A Study on the Mechanical Properties of Organo-clay Filled NR/MMT Nanocomposites  

Oh, Woo-Taek (Department of Applied Chemistry, Cheongju University)
Lee, Eun-Kyoung (Department of Applied Chemistry, Cheongju University)
Choi, Sei-Young (Department of Applied Chemistry, Cheongju University)
Publication Information
Elastomers and Composites / v.44, no.4, 2009 , pp. 455-465 More about this Journal
Abstract
In this study, Organo-montmorillonite(MMT) was synthesized by intercalation of various amine(Octylamine, Dodecylamine, Dimethyldodecylamine, Octadecylamine) compounds into layered silicate. Natural Rubber(NR)/MMT nanocomposites were prepared by reinforcement of Organo-MMT. X-ray diffraction(XRD) and Scanning electron microscope(SEM) were employed to characterize the layer distance of Organo-MMT and the morphology of the NR/MMT nanocomposites. The structures of the synthesized Organo-MMTs were analyzed by the measurement of FT-IR. Cure characteristics, surface free energy and mechanical properties such as tensile strength, modulus and hardness of NR/MMT nanocomposites were carefully studied by contact angle meter, ODR, UTM, and hardness tester. FT-IR analysis showed a insertion of the alkyl and amine chains into the interlayers of the MMT. It was shown that the cure time of the organo-MMT was more decreased than that of $Na^+$-MMT. Surface free energy and tensile strength of the NR/DDA-MMT nanocomposite were the highest. NR/ODA-MMT nanocomposite was the highest in hardness.
Keywords
montmorillonite(MMT); nanocomposite; natural rubber; surface free energy;
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Times Cited By KSCI : 4  (Citation Analysis)
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