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Citation: WANG Hua-Lin, LI Yan-Hong, SHI Tie-Jun, SHENG Min-Ganga, ZHAI Lin-Feng, WANG Ji-Zhi. Degradable Poly Lactic Acid/Hydroxyapatite Hybrid MaterialⅠ.Preparation of Nano-hydroxyapatite[J]. Chinese Journal of Applied Chemistry, ;2005, 22(9): 976-979. shu

Degradable Poly Lactic Acid/Hydroxyapatite Hybrid MaterialⅠ.Preparation of Nano-hydroxyapatite

1.
a School of Chemical Technology, Hefei University of Technology;
2.
b Key Laboratory of Bio-process Ministry of Education, Anhui 230009

Corresponding author: WANG Hua-Lin,
Received Date: 28 November 2004
Available Online: 30 April 2005
Fund Project: 安徽省自然科学基金资助项目(01044803) (01044803)

N-Butyl alcohol was used as surface treatment agent to prepare columned nano-hydroxyapatite(HA)(L/D ratio is about 2.5/1) via azeotropic distillation based on chemical co-deposited method.The samples were characterized by XRD,TEM,DSC and FT-IR means.n-Butyl alcohol could dehydrate with the hydroxyl groups on the HA surface to form C-O-P bonds,so the -O-₄H₉ groups were grafted on HA particles.Compared with the untreated HA,the crystalline temperature of HA treated with n-butyl-alcohol was decreased by two hundred centigrade,the crystallite dimension of HA treated with nbutyl alcohol was reduced by two thirds,moreover,the particle aggregation phenomena was decreased obviously.
- chemical co-deposited method,
- azeotropic distillation,
- nano-hydroxyapatite,
- surface treatment agent
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