Dispersion, thermal and mechanical properties of polypropylene/magnesium hydroxide nanocomposites compatibilized by SEBS-g-MA

Sheng Peng Liu, Ji Ru Ying, Xing Ping Zhou, Xiao Lin Xie, Yiu Wing Mai

Research output: Journal article publicationJournal articleAcademic researchpeer-review

72 Citations (Scopus)

Abstract

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 PP matrix.

Original languageEnglish
Pages (from-to)1873-1879
Number of pages7
JournalComposites Science and Technology
Volume69
Issue number11-12
DOIs
Publication statusPublished - Sept 2009
Externally publishedYes

Keywords

  • A. Magnesium hydroxide
  • A. Particle-reinforced composites
  • B. Mechanical properties

ASJC Scopus subject areas

  • Ceramics and Composites
  • General Engineering

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