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Controlling the thermomechanical properties of polymer nanocomposites by tailoring the polymer–particle interface

✍ Scribed by Amitabh Bansal; Hoichang Yang; Chunzhao Li; Brian C. Benicewicz; Sanat K. Kumar; Linda S. Schadler

Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
328 KB
Volume
44
Category
Article
ISSN
0887-6266

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✦ Synopsis

Abstract

We show that the thermomechanical properties of polymer nanocomposites are critically affected by polymer‐particle wetting behavior. Silica nanoparticles grafted with dense polystyrene brushes of degree of polymerization 1050 are blended with polystyrene melts to form nanocomposites. It was found that low molecular weight (MW) polystyrene melts with lengths <880 wet these particles. Concurrently, the glass transition temperature (T~g~) of the nanocomposite increases. At higher MW, the matrix does not wet the particles and the T~g~ decreases. © 2006 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 44: 2944–2950, 2006

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