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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/23446

    標題: 用於傷口敷料之藻酸鹽/幾丁聚醣組合物的製備與性質探討
    Preparation and characterization of alginate/chitosan composite scaffolds for wound dressings
    作者: 蘇紹宇
    貢獻者: 林恆弘
    關鍵字: 藻酸鈉
    sodium alginate
    日期: 2010
    上傳時間: 2010-12-30 15:34:24 (UTC+8)
    摘要: 傷口疼痛、組織創傷及感染對於傷口管理是主要考量,適當敷料的選擇扮演非常重要的角色。傳統敷料黏附在傷口導致要取下時會對新組織產生顯著的疼痛及外傷。現在很多研究著重在開發有包覆醫療裝置並改善再生的皮膚或結痂組織的功能性或美觀性成果的新型敷料來治療傷口。藻酸鈉和幾丁聚醣為天然的高分子,擁有生物相容性和生物可降解性,也具有加速傷口癒合的能力。本研究目的是發展一個簡單的製程製備藻酸鈉水膠敷料,評估加入幾丁聚醣對水膠的黏度、黏性之影響,並利用熱卡式分析儀(DSC)、物性分析儀(texture analyser)進行物理性質分析。篩選出藻酸鈉-幾丁聚醣溶液用氯化鈣溶液處理所形成的水膠,在乾燥後所形成的傷口敷料是不會皺縮。在黏度結果顯示,當水比例越多時溶液黏度會下降,而隨藻酸鈉濃度增加黏度會也會增加。黏性結果觀察可以發現,當水比例越多,所須的Fmax及AUC減少。藻酸鈉濃度越高,Fmax及AUC越大。且當用氯化鈣處理的處方,Fmax及AUC明顯降低,但處理不同時間並沒有很明顯差異。高分子材料製備的水膠有很好的吸水能力,表示水膠可以在傷口床維持一個濕潤的環境並移除滲出傷口的組織液,促進表皮細胞的游移加速傷口癒合。所以利用藻酸鈉所製備的水膠敷料,對於傷口的癒合是非常有幫助的。
    Wound pain, tissue trauma and infection are the main considerations of wound management, and appropriate dressing selection plays an important role in all. Traditional dressings may adhere to wounds resulting in significant pain and trauma to new tissue upon removal. Currently a lot of research is focused on developing newer dressing materials to treat wounds with coated medical devices to improve the functional and aesthetic outcome of the regenerating skin or scar tissue. Alginate and chitosan are natural biopolymers with properties like biocompatibility and biodegradability. In this study, we developed and characterized simple methods to make hydrogel dressing. Hydrogel was made by adding sodium alginate and chitosan and evaluated the viscosity, adhesion and physical property with DSC and TA-XT texture analyser. And choice the hydrogel of alginate-chitosan that treated with calcium chloride solution and not shrink while drying. The results of viscosity test showed that the water content is increased, the viscosity is decreased, and the alginate concentration is increased, the viscosity is increased. The results of adhesion showed that the ratios of PG/water is increased, the Fmax and AUC are decreased, and alginate concentrations is increased, the Fman and AUC are decreased. The formulations which treated with calcium chloride had the lower Fmax and AUC, but treated with calcium chloride in different times had no apparent differences. The water-uptake capacity show that dressing prepared from polymer materials had very pretty water-uptake capacity; The hydrogel can maintain a moist surroundings , remove exudate, promoting migration of epidermis cells, and then accelerating wound healing. So dressing prepared from alginate was useful for wound healing.
    Appears in Collections:[藥學系(所)] 博碩士論文

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