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A Powder Processing Route to Polymer Composites

Published online by Cambridge University Press:  31 January 2011

Giorgiana Giancola  and
Richard L Lehman
Giorgiana Giancola
Affiliation:
ggiancol@eden.rutgers.edu, Rutgers University, Materials Science and Engineering, Piscataway, New Jersey, United States
Richard L Lehman
Affiliation:
rllehman1@gmail.comrllehman@rutgers.edu, Rutgers University, Materials Science and Engineering, Piscataway, New Jersey, United States
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Abstract

Powder processing of thermoplastic polymer composites offers multiple advantages for both micro- and nano-scale systems. A high degree of component homogenization is achieved prior to melt forming of the composite, thus minimizing degradation associated with extended thermal processing at high shear. Polymer blends can be prepared that would otherwise not be possible due to thermodynamic incompatibility. Initial evaluation of this concept was conducted by processing PMMA and HDPE micron size powder prepared by emulsion polymerization. Spherical silica particles of comparable size (mean size = 5 μm) were added to a 30/60 PMMA/HDPE blend at the 10 volume percent concentration and mixed in an aqueous medium prior to drying and extrusion. Analysis of optical and electron microscope images of the raw mixture shows good homogeneity and distribution of the small inorganic particles around the larger matrix phase particles by the process of interstitial filling. The melt-processed composite was observed by SEM and consisted of a three-phase system of dispersed silica and PMMA particles in a HDPE matrix.

Keywords

compositepolymerpowder processing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1209: Symposia P/YY – Business and Safety Issues in the Commercialization of Nanotechnology , 2009 , 1209-YY07-01
Copyright
Copyright © Materials Research Society 2010

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