以各種有機酸、酸性多醣、及非水溶性塑化劑提昇幾丁聚醣材料的多樣性

Abstract

幾丁聚醣是一種由葡萄糖胺及乙醯化葡萄糖胺所組成的天然多醣類。幾丁聚醣具有許多特殊的性質，例如它帶有胺基等。利用這些特性，本研究改良幾丁聚醣材料。 在第一部分中，本研究發展了一個新的改良方式避免使用了有毒的交聯劑 (如戊二醛等)，也不會造成材料的脆化，因此在幾丁聚醣材料的改良方面是一個更經濟且安全的選擇。在第二部分中，本研究開發了新的幾丁聚醣複合材料。這些複合材料具有比傳統複合材料更好的特性，因此深具應用潛力。在第三部分中，本研究將將幾丁聚醣與數種塑化劑混合，讓幾丁聚醣的材料表現更佳，因此可作為未來在幾丁聚醣的增塑應用上更好的選擇。 材料的多樣性決定了一個材料的價值及應用潛力。若能有大幅度的性質及型態變化，該材料就更有機會成功的符合特定用途的需要。本研究大幅提昇幾丁聚醣材料的多樣性，因此可提高幾丁聚醣的價值。

Chitosan is a natural polysaccharide constituted by N-glucosamine and N-acetyl glucosamine. It has many inherent characteristics, including carrying amino groups. Taking advantage of these unique characteristics, chitosan-based materials were improved and diversified: In the first part, a straightforward method has been developed for chitosan material; this method does not result in a brittle product, thus making it better than the use of toxic cross-linking reagents such as glutaraldehyde. In the second part, novel composite porous membranes were developed. Such composite membranes had outperformed the traditional chitosan materials and have potential. In the third part, several plasticizers were incorporated with chitosan. They could be good choices for future development of chitosan-based materials. Diversification is important for the applicability of a material. The greater the diversity of a material, the higher probability it would be successfully used in specific applications.