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http://dx.doi.org/10.12925/jkocs.2010.27.2.10

The Effect of chemical crosslinking in alkaline solution on fibrillation tendency and dyeability of lyocell fiber  

Lee, Soo (Department of Chemical Engineering, Ghang Won National University)
Kim, Jin-Woo (Department of Chemical Engineering, Ghang Won National University)
Jin, Seok-Hwan (Department of Chemical Engineering, Ghang Won National University)
Publication Information
Journal of the Korean Applied Science and Technology / v.27, no.2, 2010 , pp. 168-174 More about this Journal
Abstract
In this research, an effective method for reducing the fibrillation of lyocell fibers, which are spun from a solution of cellulose in N-methyl morpholine-N-oxide(NMMO), through consecutive chemical treatments. Undried solution-spun cellulosic fiber was firstly treated with 10 to 30 wt% of multifunctional crosslinking agents, such as ethylene glycol poly(3-chloro-2-hydroxypropyl) ether, and then dipped into alkaline solution to introduce epoxy functions. Finally steam condition was applied to occur a chemical crosslinking in order to reduce the fibrillation on the surface of fibers. Fibrillation was also reduced significantly by adding extra $Na_2SO_4$ in NaOH solution. In addition, Antifibrilllated lyocell fibers show the slightly higher dyeability(4 %) to Cibacron Blue without serious reduction of mechanical properties.
Keywords
lyocell; NMMO; fibrillation; dyeability; crosslinking;
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