本研究主要針對經過不同去乙醯化作用之幾丁聚醣處理過後之織物，對反應性和酸性染料吸附特性的探討。由文獻中可知幾丁聚醣中胺基團的百分比分布會直接地影響吸附染料的效果，利用苛性鈉製造不同去乙醯化度之幾丁聚醣；再將這些不同去乙醯化度作用之幾丁聚醣和織物處理成幾丁聚醣織物吸附材料後，探討其吸附反應性染料（CI black5和CI red 3），和酸性染料（CI pink50 和CI orange10）的效果。結果顯示隨著幾丁聚醣去乙醯化度的提高，對於這兩種類型染料的吸附效果也有顯著的上升。使用去乙醯化度98%的幾丁聚醣含浸織物吸附材，在經過8天的飽和吸附後，對於兩種反應性染料之吸附效果可達到98%和95%；且對於兩種酸性染料之吸附效果也可達到93%和92%，由此可知去乙醯化程度越高，對染料的吸附效果越好。
The present study investigates the inherent adsorption property of woven fabrics after various degrees of de-acetylation with regard to chitosan, focusing on reactive and acidic dyes. A search of literature shows that the percentage of amino groups in a chitosan will directly affect its adsorption. We attempted to increase various degrees of amino groups of chitosan in acetic acid through caustic soda (NaOH), and the resulting chitosans were subsequently used to treat woven fabrics. The chitosan-nonwoven fabric material was then examined for their ability to adsorb reactive (CI Black 5 and CI Red 3) and acidic (CI Pink 50 and CI Orange 10) dyes. We discovered that degree of de-acetylation of chitosan significantly enhanced the adsorption of woven fabric in both types of dyes. The adsorptive effect of chitosan on acidic dye follows a sigmoidal trend. The chitosan-woven fabric after 98% de-acetylation achieved 98% and 95% dye adsorption in reactive dyes; and achieved 93% and 92% dye adsorption in reactive dyes in eight days. The higher the degree of de-acetylation, the better the dye adsorption.
