Nanoparticle-Induced Biodegradation of Poly(ε-caprolactone)
Biodegradable poly(ε-caprolactone) (PCL)-layered silicates or hydroxyapatite nanocomposites were prepared via a solution route. The nanostructure indicates intercalated hybrids for layered silicates. Hydroxyapatite (HA) does not exhibit an intercalated pattern, as the pristine HA does not contain any layered structure. All the nanoparticles act as nucleating agents and, thereby, control the crystallite dimension of the matrix. The nature of interaction between various types of nanoclays and PCL is different as evident from the varied enthalpy of fusion. The biodegradability of pure PCL and its nanocomposites were studied at room temperature under controlled conditions in compost and Ganges water media. The rate of polymer biodegradation is enhanced dramatically in the nanohybrids. The change in biodegradation is streamlined in terms of the nature of the nanoparticles used to prepare hybrids. The morphological developments in the presence of different types of nanoparticles have been explored. Atomic force microscopy and scanning electron microscopy have been used to confirm the surface roughening after biodegradation which correspond the observed results.
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Document Type: Short Communication
Publication date: March 1, 2009
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- Nanoscience and Nanotechnology Letters (NNL) is a multidisciplinary peer-reviewed journal consolidating nanoscale research activities in all disciplines of science, engineering and medicine into a single and unique reference source. NNL provides the means for scientists, engineers, medical experts and technocrats to publish original short research articles as communications/letters of important new scientific and technological findings, encompassing the fundamental and applied research in all disciplines of the physical sciences, engineering and medicine.
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