Synthesis of poly(ε-caprolactone)/hydroxyapatite nanocomposites usingin-situ co-precipitationb

Won-Young Choi; Hyoun-Ee Kim; Se-Yoon OhYoung-Hag Koh

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Synthesis of poly(ε-caprolactone)/hydroxyapatite nanocomposites usingin-situ co-precipitationb

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Hybrid poly(ε-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 preparedcontained 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 to30 wt., whereas the elastic modulus increased from 85±4.2 to 183±6.6 MPa. In addition, the ALP activitywas increased remarkably due to the presence of bioactive HA nanocrystals within the composites. Thenanocomposite containing 30 wt. HA showed a higher elastic modulus and ALP activity than theconventional PCL/HA composite with an initial HA content of 30 wt.. This was attributed to the nanoscalehybridization of the HA nanocrystals without significant agglomeration.

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《Materials science & engineering, C. Biomimetic and supramolecular systems》 |2010年第5期|777-780|共4页
作者
Won-Young Choi; Hyoun-Ee Kim; Se-Yoon OhYoung-Hag Koh;
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作者单位

Department of Materials Science and Engineering, Seoul National University Seoul, 151-742, Republic of Korea;

Department of Dental Laboratory Science and Engineering, Korea University, Seoul, 136-703, Republic of Korea;

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原文格式 PDF
正文语种英语
中图分类工程材料学;
关键词
Poly(ε-caprolactone); Hydroxyapatite; Nanocomposites; Co-precipitation;

Synthesis of poly(ε-caprolactone)/hydroxyapatite nanocomposites usingin-situ co-precipitationb

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