Synthesis of poly(epsilon-caprolactone)/hydroxyapatite nanocomposites using in-situ co-precipitation
- Authors
- Choi, Won-Young; Kim, Hyoun-Ee; Oh, Se-Yoon; Koh, Young-Hag
- Issue Date
- 15-6월-2010
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Poly(epsilon-caprolactone); Hydroxyapatite; Nanocomposites; Co-precipitation
- Citation
- MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS, v.30, no.5, pp.777 - 780
- Indexed
- SCIE
SCOPUS
- Journal Title
- MATERIALS SCIENCE & ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
- Volume
- 30
- Number
- 5
- Start Page
- 777
- End Page
- 780
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/116240
- DOI
- 10.1016/j.msec.2010.02.023
- ISSN
- 0928-4931
- Abstract
- Hybrid poly(E-caprolactone) (PCL)/hydroxyapatite(HA) nanocomposites with various HA contents (0, 10, 20, 30 wt.%) were synthesized using an in-situ co-precipitation method. All nanocomposites prepared contained elongated HA nanocrystals dispersed uniformly in the PCL matrix without severe agglomeration. The tensile strength decreased from 13.5 +/- 0.4 to 10.2 +/- 0.3 MPa with increasing the HA content from 0 to 30 wt.%, whereas the elastic modulus increased from 85 +/- 4.2 to 183 +/- 6.6 MPa. In addition, the ALP activity was increased remarkably due to the presence of bioactive HA nanocrystals within the composites. The nanocomposite containing 30 wt.% HA showed a higher elastic modulus and ALP activity than the conventional PCL/HA composite with an initial HA content of 30 wt.%. This was attributed to the nanoscale hybridization of the HA nanocrystals without significant agglomeration. (c) 2010 Elsevier B.V. All rights reserved.
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