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Preparation and properties of radiation crosslinked natural rubber/clay nanocomposites


Sharif, Jamaliah and Wan Yunus, Wan Md. Zin and Mohd Dahlan, Khairul Zaman and Ahmad @ Ayob, Mansor (2005) Preparation and properties of radiation crosslinked natural rubber/clay nanocomposites. Polymer Testing, 24 (2). pp. 211-217. ISSN 0142-9418; ESSN: 1873-2348


Radiation crosslinking of natural rubber (NR)/clay nanocomposites was studied by using Standard Malaysian Rubber (SMRL) grade natural rubber and sodium montmorillonite (Na-MMT) clay that had been modified with cationic surfactants, dodecyl ammonium chloride (DDA) and octadecylamine ammonium chloride (ODA). The NR/clay nanocomposites were prepared by melt mixing to produce NR/Na-MMT, NR/DDA-MMT and NR/ODA-MMT composites. X-ray diffraction results indicated the intercalation of the NR into silicate nano-size inter-layers for NR/DDA-MMT and NR/ODA-MMT nanocomposites. An optimum electron beam dose of 250 kGy for crosslinking of NR, NR/DDA-MMT and NR/ODA-MMT was determined by gel content and tensile strength measurements. Upon electron beam irradiation, the tensile modulus of the nanocomposites keeps increasing with the increase of clay content up to 10 phr. However, the tensile strength and gel content of the nanocomposites show optimum values at a range of 3.0–5.0 phr clay content. From these results, NR/DDA-MMT shows higher tensile strength, whereas NR/ODA-MMT exhibits higher tensile modulus. The optimum tensile strengths of NR/DDA-MMT and NR/ODA-MMT are 12.1 and 9.5 MPa, respectively. TGA studies showed that NR/DDA-MMT and NR/ODA-MMT nanocomposites have higher decomposition temperatures in comparison with the NR/Na-MMT.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Science and Environmental Studies
DOI Number: https://doi.org/10.1016/j.polymertesting.2004.08.008
Publisher: Elsevier
Keywords: Natural rubber; Montmorillonite; Intercalate; Nanocomposites; Electron beam
Depositing User: Nabilah Mustapa
Date Deposited: 14 Sep 2015 00:04
Last Modified: 14 Sep 2015 00:04
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.polymertesting.2004.08.008
URI: http://psasir.upm.edu.my/id/eprint/40145
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