Method for preparing hydroxylapatite-silk fibroin compound stent material using two-step method
A technology of hydroxyapatite and silk fibroin, which is applied in medical science, prosthesis, etc., can solve the problems of poor interfacial bonding force, easy damage of interfacial layer, loss of effective strength, etc., and achieve the effect of good mechanical properties.
Active Publication Date: 2009-07-08
ZHEJIANG SCI-TECH UNIV
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The invention discloses a two-step method for preparing hydroxyapatite-silk fibroin composite stent material, comprising the following steps: (1) under the environment of alkaline solution, chemical bonding is formed by carboxyl on silk fibroin molecular and Ca ions in the solution; when PO4 irons are dripped, the Ca ions react with the PO4 irons to generate the hydroxyapatite, therefore, hydroxyapatite-silk fibroin composite slurry is prepared; (2) after silk fibroin solution is added in the hydroxyapatite-silk fibroin composite slurry, the intermolecular hydrogen bonding is formed between silk fibroin molecular in the composite and silk fibroin molecular in the solution, then, the mixed solution is poured in a die to obtain the porous hydroxyapatite-silk fibroin composite stent material after freezing-freeze drying. Compared with hydroxyapatite-silk fibroin composite stent material which is directly prepared by a prior blending method, the stent material prepared by the invention has perfect mechanical property.
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