In:
Journal of Thermoplastic Composite Materials, SAGE Publications, Vol. 28, No. 4 ( 2015-04), p. 479-495
Abstract:
The surface of micro and nanoparticles of calcium carbonate (CaCO 3 ) was modified by 3-mercaptopropyl trimethoxysilane and polymethylhydrogensiloxane. Fourier transform infrared spectra of extracted CaCO 3 particles revealed interfacial bonding between coupling agents and CaCO 3 particles. Poly(vinyl chloride) (PVC)/surface-modified CaCO 3 with different mass ratios of (micro/nano)-CaCO 3 particles were melt blended using a Brabender torque rheometer and kept with a constant content of CaCO 3 . The impact strength, tensile strength, elongation at break, and Young’s modulus of the composites were considerably enhanced at 9/6 mass ratio of (micro/nano)-CaCO 3 . The mechanical properties were improved relative to the pure PVC due to the interfacial bonding between the filler and the matrix. Scanning electron microscopic images of fractured surfaces of the test specimens showed larger voids with nonsmooth edge around the cavities, as compared with the nano-CaCO 3 /PVC composite, which is more pronounced by the increase in the micro particles contents.
Type of Medium:
Online Resource
ISSN:
0892-7057
,
1530-7980
DOI:
10.1177/0892705713486128
Language:
English
Publisher:
SAGE Publications
Publication Date:
2015
detail.hit.zdb_id:
2098671-3
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