研究生: |
高曼容 |
---|---|
論文名稱: |
聚酸酐共聚物混摻表面改質奈米氫氧磷灰石於骨修復應用 Polyanhydride copolymer blending with surface modified nano-hydroxyapatite for bone healing |
指導教授: | 朱一民 |
口試委員: |
鍾次文
魏毓宏 |
學位類別: |
碩士 Master |
系所名稱: |
工學院 - 化學工程學系 Department of Chemical Engineering |
論文出版年: | 2011 |
畢業學年度: | 99 |
語文別: | 中文 |
論文頁數: | 58 |
中文關鍵詞: | 骨填充材料 、機械強度 、聚酸酐類高分子 、氫氧磷灰石 |
相關次數: | 點閱:4 下載:0 |
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在骨組織修復(bone healing)的過程,就一良好之骨填充(bone graft)材料來說,一定的機械強度(mechanical strength)與良好的生物相容性(biocompatibility)是兩個主要的考量重點。本研究結合聚酸酐類高分子sebacic acid (SA)和1,3-bis(p-carboxyphenoxy)propane (CPP),以不同之莫耳比例形成共聚物(copolymer),添加以polycaprolactone (PCL)表面改質後的hydroxyapatite (HAP) – g-HAP,增強高分子共聚物較弱的機械強度。在降解過程中,運用聚酸酐類表面降解(surface degradation)的特性,使塊狀材料仍能保持一定的機械強度。在生物相容性方面,聚酸酐類高分子在降解過程中,其分解物不會造成嚴重的pH值下降,無害於細胞的生長;HAP為人體骨頭中的主要成分,添加HAP有助於骨細胞的礦化作用(mineralization),促進新生骨形成,不產生纖維軟組織。研究結果顯示,最適化材料為CPP:SA = 6:4添加15%wt g-HAP,此材料之機械強度可達69MPa,其降解速度可配合骨修復時間,於降解後仍保持良好的支撐性,具有適合運用在骨填充材料的優點,可作為未來骨修復材料的應用。
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