在本研究中，纖維素產品的衍生物是用來代替石油衍生產品的使用。利用TEMPO氧化法製備纖維素奈米纖維 (CNF)，且再進一步和不同量的幾丁聚醣(CS)結合，得到具有柔韌性及很好的水穩定性的CNF-CS複合膜。傅立葉轉換紅外光譜跟紫外-可見光光譜顯示出成功利用醯胺化反應製備CNF-CS複合膜。最後，最佳莫爾比例的CNF:CS引導出楊氏係數0.96及11.7%的水溶性損失，即使CNF-CS複合膜在水接觸角上擁有親水性。
利用濕式紡絲法把CNF懸浮液製備成纖維素細線，並改變不同的變因找出最理想的細線，變因像是：凝固劑、濕紡配置、懸浮液中纖維素的濃度、以及擠壓速率。最理想的條件是以氯化鈣為凝固劑且垂直配置，然後纖維素懸浮液為2.25wt%，擠壓速率為15mL/h。在此情況中，Ca-CNF細線顯現出最強的機械性能，應力為132 N/mm，應變為23.1%。此外，Ca-CNF細線也有很好的水穩定性，紡織形式的水接觸角為106.4度。再者，做了其他分析像是傅立葉轉換紅外光譜、紫外-可見光光譜、光學顯微鏡、掃描式電子顯微鏡、熱重分析、以及小角度跟大角度X 光散射儀，讓我們對Ca-CNF細線的特性更加了解。

In this study, the derivative of cellulose product was prepared to replace the usage of petroleum-derived product. Cellulose nanofiber (CNF) was prepared by using TEMPO oxidation method and further combined with various amounts of chitosan (CS) to get the CNF-CS composite film with flexible property and good water stability. Fourier transform infrared and UV-Visible absorption spectra indicated the successful preparation of CNF-CS composite film by amide reaction. Finally, the best unit mole ratio of 1:1 CNF:CS resulted in 0.96 Young’s modulus and 11.7% water-soluble loss, although CNF-CS composite film showed a hydrophilic property on water contact angle.
The wet spinning method was used to prepare the cellulose filament from the CNF suspension under some variables varied to get the optimum filament such as coagulation agent, wet spinning configuration, cellulose concentration in suspension, and extrusion speed. The optimum condition was obtained using calcium chloride as coagulation agent, and the vertical configuration with 2.25wt% of cellulose suspension and 15mL/h of extrusion speed. In this condition, the Ca-CNF filament showed a highest mechanical property with stress of 132 N/mm2 and strain of 23.1%. In addition, Ca-CNF filament also had a good water stability with the water contact angle in textile form of 106.4. Furthermore, other analyses such as Fourier transform infrared absorption spectroscopy, UV-Visible transmittance, optical microscopy, scanning electron microscopy, thermogravimetric analyses, and small and wide-angle X-ray scattering were done to know more about Ca-CNF filament properties.

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