Investigation on the mechanical performances of ternary nylon 6/SEBS elastomer/nano-SiO2 hybrid composites with controlled morphology

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)469-479
Journal / PublicationJournal of Applied Polymer Science
Volume115
Issue number1
Publication statusPublished - 5 Jan 2010

Abstract

The distribution of maleated styrene-hydrogenated butadiene-styrene (mSEBS) elastomer and nano-SiO2 in nylon 6 matrix was controlled by varying the blending procedure. Nano-SiO2 particles with different surface properties (hydrophilic versus hydrophobic) were adopted to adjust their interactions with other components. Two different structures, separate dispersion of nano-SiO2 and elastomer particles as well as encapsulation of nano-SiO2 fillers by the elastomer, were obtained. The structures were confirmed through scanning electron microscope (SEM) investigation. The mechanical measurement results showed that the microstructure and the interactions among the components had dramatic influences on the final mechanical properties, especially Izod fracture toughness, for the ternary nanocomposites. The nanocomposites containing hydrophilic nano-SiO2 had better mechanical performances compared with the composites filled with hydrophobic SiO2 when they were in the same microstructure. The nanocomposites with separate dispersion structure showed higher stiffness compared with those of encapsulation type. However, the separately dispersed nano-SiO2 particles restricted the cavitation of elastomer phases that led to low toughening effectiveness. The difference of cavitation intensity for elastomer phase was revealed by SEM investigation on the facture surfaces for the nanocomposites with the two different microstructures. © 2009 Wiley Periodicals, Inc.

Research Area(s)

  • Mechanical properties, Microstructure, Nanocomposites, Nylon 6, Toughness

Citation Format(s)

Investigation on the mechanical performances of ternary nylon 6/SEBS elastomer/nano-SiO2 hybrid composites with controlled morphology. / Zhang, Baoqing; Wong, Julia Shuk-Ping; Shi, Dean; Yam, Richard Ching-Man; Li, Robert Kwok-Yiu.

In: Journal of Applied Polymer Science, Vol. 115, No. 1, 05.01.2010, p. 469-479.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review