Journal
MACROMOLECULAR CHEMISTRY AND PHYSICS
Volume 210, Issue 8, Pages 677-688Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/macp.200800508
Keywords
dynamic mechanical analysis; hydroxyapatite; nanocomposites; poly(epsilon-caprolactone)
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Funding
- Georgia institute of Technology
- Solvay Advanced Polymers Young Faculty Award
- National Science Foundation [CMMI-0800019]
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In order to understand the contribution of nanoparticle surface area to the properties of nanocomposite materials, hydroxyapatite nanoparticles with different specific surface areas (60 m(2) . g(-1) and 111 m(2). g(-1)) were synthesized using reverse microemulsion and processed into nanocomposites. Experimental results indicated that the thermomechanical reinforcement did show a dependence on nanoparticle surface area, although the transition temperatures did not. The reinforcement trends were dependent on temperature, suggesting that the nanoparticles had a greater impact on the amorphous polymer chains. The reinforcement above T-g may be plotted against nanoparticle surface area to obtain a single reinforcement trend, suggesting that surface area is a general parameter for nanocomposite property control.
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