Effect of Different Factors on the Fibrillation Degree of Lyocell Fiber Based on Homogenization Treatment

Abstract:

The homogenization treatment was performed to fibrillate Lyocell fiber, and then the effects of different factors including NaOH concentration, homogeneous time, temperature and bath ratio on the fibrillation degree of Lyocell fiber were investigated through the orthogonal experiment. Various characterization techniques were employed to compare the fibrillation degree of Lyocell fiber. The polarized light microscope (POM) and scanning electron microscope (SEM) were used to observe the appearance of the fiber after different treatment, and the results showed that it was a quick and efficient approach to obtain the fibrillated Lyocell fiber by homogenization treatment, and the fibrillation degree of fibers varied with different treatment conditions. The results of water retention value (WRV) and the characteristic parameter of the fibrillation degree revealed that the ranking of factors affecting the fibrillation degree of fibers was NaOH concentration > homogeneous time > temperature > bath ratio, using the extreme difference analysis and variance analysis methods. The degree of fibrillation was influenced dominantly by NaOH concentration, rather than any other three factors. By means of BET test, the specific surface area of treated fiber showed a similar trend with WRV, and they matched well with fibril amount on the fibers observed by SEM.

• Periodical: Materials Science Forum (Volume 898)
• Pages: 2309-2317
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.898.2309
• Online since: June 2017
• Authors: Qiao Li, Chen Jiang, Ge Sheng Yang, Hui Hui Zhang*, Min Min Yu, Hui Li Shao
• Keywords: Fibrillation, Homogenization, Lyocell Fiber, Orthogonal Experiment

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