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Please use this identifier to cite or link to this item: http://repository.li.mahidol.ac.th/dspace/handle/123456789/25375
Title: Influence of stearic acid treatment of filler particles on the structure and properties of ternary-phase polypropylene composites
Authors: K. Premphet
P. Horanont
Mahidol University
Keywords: Chemistry;Materials Science
Issue Date: 1-Dec-1999
Citation: Journal of Applied Polymer Science. Vol.74, No.14 (1999), 3445-3454
Abstract: In this study, ternary-phase polypropylene (PP) composites containing an ethylene-octene copolymer (EOR) and calcium carbonate (CaCO3) were investigated. Particular consideration was given to the influence of stearic acid treatment of the filler on the phase morphology and mechanical properties of the composites. In composites containing an uncoated filler, a separate dispersion of the elastomer and filler particles in the PP matrix was observed. The use of filler treated with stearic acid had no effect either on the dispersion or the interaction of the filler and the polymer components. However, the surface-treated filler was found to promote the β-hexagonal crystallization of PP and gave a composite with lower Tc onsetand Tcvalues. As a consequence, differences in mechanical properties, in particular, impact strength, were exhibited in which calcium carbonate with stearic acid treatment was apparently more effective in increasing the impact strength of the composites in comparison with the composites containing the uncoated filler.
URI: https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=0033309949&origin=inward
http://repository.li.mahidol.ac.th/dspace/handle/123456789/25375
ISSN: 00218995
Appears in Collections:Scopus 1991-2000

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