Journal
COMPOSITES SCIENCE AND TECHNOLOGY
Volume 69, Issue 11-12, Pages 1873-1879Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compscitech.2009.04.004
Keywords
Particle-reinforced composites; Magnesium hydroxide; Mechanical properties
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Funding
- National Natural Scientific Foundation of China [50573026]
- Program for New Century Excellent Talents in Universities of China [NCET-050640]
- Opening Round of Hubei Key Laboratory of Novel Reactor and Green Chemical Technology [SQ2004-15]
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Isotactic polypropylene (PP)/nano-magnesium hydroxide (nano-MH) composites with 10 wt.% maleic anhydride grafted styrene-ethylene-butylene-styrene tri-block copolymer (SEBS-g-MA) as a compatilizer were prepared by melt extrusion compounding and injection molding. The effects of SEBS-g-MA on dispersion of nano-MHs in PP matrix and interfacial adhesion were studied in order to prepare highly filled PP/MH nanocomposites. The results showed that SEBS-g-MA improved both dispersion of nano-MHs and interfacial adhesion in PP/MH nanocomposites with up to 40 wt.% nano-MHs. The elastic moduli of PP/SEBS-g-MA/MH nanocomposites increased marginally and tensile yield strengths were almost invariant with nano-MH loading. Significant impact toughening of these ternary nanocomposites was, however, achieved due to the cavitation of SEBS-g-MA/MH particles and expansion of voids as well as plastic deformation of the PIP matrix. (C) 2009 Elsevier Ltd. All rights reserved.
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