Biodegradable polyhydroxyalkanoates/SWNT nanocomposite spheres and films prepared by spray-drying method
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Date
2008-04-06
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Publisher
American Chemical Society
Abstract
The nanocomposite microspheres and films of poly(3-hydroxybutyrate) (PHB) and poly(3-hydroxyoctanoate) (PHO) with single wall carbon nanotubes (SWNTs), were prepared by spray-drying method. The TEM immages showed that SWNTS well dispersed in PHB abd PHO indicating that rapid evaporation by spray drying effectively prevents aggregation of SWNTs. The Optical microscopy showed that the crystalline size substantially decreased for PHB/SWNTs nanocomposites with a 1% weight fraction of SWNTs relative to PHB (PHB/(1%)SWNTs), indicating the effective nucleation of PHB crystallization by SWNTs. Mechanical properties of the nanocomposite films were measured by nanoindentation. Both polymer nanocomposite films showed an increase in hardness (H) and Young's modulus (E), with SWNTs concentration.
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Keywords
Spray drying, Microspheres, Nanotubes, Optical microscopy, Films, Spheres
Citation
Yun, S. I., Gadd, G. E., Russell, R. A., & Holden, P. J. (2008). Biodegradable polyhydroxyalkanoates/SWNT nanocomposite spheres and films prepared by spray-drying method. Presentation to The 235th American Chemical Society (ACS) National Meeting, 6th - 10th April 2008. Morial Convention Center: New Orleans, LA. In Abstracts of scientific papers, 235th American Chemical Society national meeting & exposition : April 6-10, 2008, New Orleans, Louisiana, Cell 58.