Alumina-filled polystyrene micro- And nanocomposites prepared by melt mixing with and without latex precompounding

Structure and properties

S. Siengchin, J. Karger-Kocsis, R. Thomann

Research output: Contribution to journalArticle

46 Citations (Scopus)

Abstract

Alumina fillers were incorporated in polystyrene (PS) in 4.5 wt % by melt blending with and without latex precompounding. Latex precompounding was used for the latex-mediated predispersion of the alumina particles. The related masterbatch was produced by mixing PS latex with water dispersible boehmite alumina in various particle sizes followed by drying. The dispersion of the alumina in the PS was studied by transmission and scanning electron microscopy (TEM and SEM, respectively). The mechanical and thermomechanical properties of the PS composites were determined in uniaxial tensile, dynamic-mechanical thermal analysis (DMTA), and short-time creep tests performed at various temperatures. In addition, the melt flow of the composites was characterized in a plate/plate rheometer. It was found that direct melt mixing of the alumina with PS resulted in micro-, whereas the masterbatch technique in nanocomposites. The stiffness and resistance to creep (summarized in master curves) of the nanocomposites were improved compared to those of the microcomposites. The properties of the composites were upgraded by decreasing nominal size of the water dispersible alumina. The preparation technique and the size of the alumina particles affected the tensile strength, melt viscosity, and heat distortion temperature in lesser extent than the stiffness and thus compliance data.

Original languageEnglish
Pages (from-to)2963-2972
Number of pages10
JournalJournal of Applied Polymer Science
Volume105
Issue number5
DOIs
Publication statusPublished - Sep 5 2007

Fingerprint

Aluminum Oxide
Polystyrenes
Latex
Latexes
Nanocomposites
Alumina
Composite materials
Creep
Stiffness
Transmission electron microscopy
Scanning electron microscopy
Water
Rheometers
Thermoanalysis
Particles (particulate matter)
Fillers
Drying
Tensile strength
Particle size
Viscosity

Keywords

  • Creep
  • Nanocomposite
  • Polystyrene
  • Stiffness
  • Structure-property relations
  • Thermal properties

ASJC Scopus subject areas

  • Polymers and Plastics

Cite this

Alumina-filled polystyrene micro- And nanocomposites prepared by melt mixing with and without latex precompounding : Structure and properties. / Siengchin, S.; Karger-Kocsis, J.; Thomann, R.

In: Journal of Applied Polymer Science, Vol. 105, No. 5, 05.09.2007, p. 2963-2972.

Research output: Contribution to journalArticle

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