Abstract
A new treatment method for Na-montmorillonite as a support of the metallocene catalyst, Cp2ZrCl2, was developed. Ammonia and Dodecylamine were used for treatment of the clay nanoplatelets at different conditions. The activity of the supported catalyst on the modified clay in ethylene polymerization was 206.11 times higher than that of Cloisite 15A. The proper exfoliation of the treated clay in polyethylene matrix was justified by XRD and TEM techniques. The crystallinity and crystallization temperature of the nanocomposite became lower than those of pure polyethylene. Thermal stability of the produced nanocomposite was higher than that of pure polyethylene at oxidative state. Improvement in morphology of the nanocomposite was observed by SEM. The presence of dodecylamine and chemisorbed ammonia in the treated Na-montmorillonite was confirmed by FTIR analysis.
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Hakim, S., Safajou-Jahankhanemlou, M. & Zeynali, M.E. Polyethylene nanocomposite prepared by a metallocene catalyst supported on MMT using a new pretreatment method. J Polym Res 20, 129 (2013). https://doi.org/10.1007/s10965-013-0129-1
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DOI: https://doi.org/10.1007/s10965-013-0129-1