Structural ATR-IR analysis of cellulose fibers prepared from a NaOH complex aqueous solution

2017 Global Conference on Polymer and Composite Materials

材料科学;化学

Yang, Y.P.^1 ; Zhang, Y.^1 ; Lang, Y.X.^1 ; Yu, M.H.^1

State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai

201620, China^1

关键词: Attenuated total reflection infrared spectroscopy;    Cellulose regeneration;    Correlation spectroscopy;    Crystalline cellulose;    Dissolution methods;    High crystallinity;    Regenerated cellulose;    Two Dimensional (2 D);   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/213/1/012039/pdf
DOI  :  10.1088/1757-899X/213/1/012039

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

In this study, regenerated cellulose fibers were successfully prepared from cellulose/NaOH/thiourea/urea aqueous solution through an efficient extrusion dissolution method. The microstructure of the regenerated cellulose fibers were analysed by using attenuated total reflection infrared (ATR-IR) spectroscopy and the corresponding two-dimensional (2D) correlation spectroscopy. The results showed that the fibers demonstrate a typical crystalline cellulose II and a relatively high crystallinity. Improved crystal structure and tensile strength were obtained in the regenerated cellulose fibers due to improved multi-roller drawing process. The total crystalline index (TCI) and tensile strength of the fibers at different spinning stages were determined in the range of 0.46-0.54 and 1.06-2.30 cN/dtex, respectively. The described cellulose regeneration pathway provided an environmentally friendly and simple method, which could have a significant influence on current cellulose regeneration industries.