Structure and properties of regenerated cellulose fibers from different technology processes

Jiang, Guansen; Huang, Weifeng; Li, Lin; Wang, Xiao; Pang, Fengjian; Zhang, Yumei; Wang, Huaping

doi:10.1016/j.carbpol.2011.10.022

Cited by 109 publications

(80 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The draw ratio was kept constant and the elongation at break decreased slightly. Surprisingly, the tenacity and modulus of regenerated cellulose fibers with [BMIM]Cl as solvent is apparently higher than that of the Viscose fibers, this results consists with the previous report (Jiang et al 2012). Kosan et al (2008) concluded that the regenerated cellulose fibers spun from [BMIM]Cl solutions shown a higher tenacities but lower values for the elongation than fibers with NMMO as solvent.…”

Section: Mechanical Properties Of the Regenerated Cellulose Fibers Spsupporting

confidence: 86%

Analysis of regenerated cellulose fibers with ionic liquids as a solvent as spinning speed is increased

et al. 2012

Self Cite

View full text Add to dashboard Cite

In order to improve the spinning efficiency, the spinning experiments with cellulose/1-butyl-3-methylimidazolium chloride solution were done whilst increasing spinning speed. It was found that the tenacity and initial modulus of regenerated cellulose fibers increased but the elongation at break decreased slightly with increasing spinning speed at constant draw ratio. Further, the synchrotron wideangle X-ray diffraction and small-angle X-ray scattering were carried out to illustrate the relationship between the structure and the mechanical properties. It was shown that the crystal orientation, crystallinity, amorphous orientation factor as well as orientation of the microvoids along the fiber increased with the spinning speed as the diameter of the microvoids in the fiber decreased. From the analysis of the spinline stress, it is clear that the spinline stress increased when both extruding and draw speed increased at constant draw ratio. This resulted in the improvement of supramolecular structure and mechanical properties of the regenerated cellulose fibers.

show abstract

Section: Mechanical Properties Of the Regenerated Cellulose Fibers Spsupporting

confidence: 86%

Analysis of regenerated cellulose fibers with ionic liquids as a solvent as spinning speed is increased

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…The crystallographic properties were determined via WAXS and SAXS analyses and compared with those of commercial fibers. The close resemblance to NMMO-based Lyocell fibers was confirmed [82]. Typical for dry-jet wet spinning technology, the overall crystallinity, the degree of crystalline orientation, and the birefringence (total orientation) of NMMO and IL-spun fibers surpassed those of viscose fibers.…”

Section: Fiber Spinningsupporting

confidence: 60%

“…Typical for dry-jet wet spinning technology, the overall crystallinity, the degree of crystalline orientation, and the birefringence (total orientation) of NMMO and IL-spun fibers surpassed those of viscose fibers. SAXS measurements showed substantially larger voids in viscose fibers [82]. Furthermore, the Lyocelltype fibers typically have a higher cellulose DP and a fibrillar morphology resulting from coagulation via spinodal decomposition.…”

Section: Fiber Spinningmentioning

confidence: 98%

Ionic Liquids for the Production of Man-Made Cellulosic Fibers: Opportunities and Challenges

Hummel

Michud

Tanttu

et al. 2015

Advances in Polymer Science

132

View full text Add to dashboard Cite

The constant worldwide increase in consumption of goods will also affect the textile market. The demand for cellulosic textile fibers is predicted to increase at such a rate that by 2030 there will be a considerable shortage, estimated at~15 million tons annually. Currently, man-made cellulosic fibers are produced commercially via the viscose and Lyocell™ processes. Ionic liquids (ILs) have been proposed as alternative solvents to circumvent certain problems associated with these existing processes. We first provide a comprehensive review of the progress in fiber spinning based on ILs over the last decade. A summary of the reports on the preparation of pure cellulosic and composite fibers is complemented by an overview of the rheological characteristics and thermal degradation of cellulose-IL solutions. In the second part, we present a non-imidazolium-based ionic liquid, 1,5-diazabicyclo[4.3.0]non-5-enium acetate, as an excellent solvent for cellulose fiber spinning. The use of moderate process temperatures in this process avoids the otherwise extensive cellulose degradation. The structural and morphological properties of the spun fibers are described, as determined by WAXS, birefringence, and SEM measurements. Mechanical properties are also reported. Further, the suitability of the spun fibers to produce yarns for various textile applications is discussed.

show abstract

“…The length of microvoids could be changed during various processing methods, and a recent report showed that the length of microvoids in regenerated cellulose fibers ranges from 333 to 1320 nm (Jiang et al, 2011). In this study, the estimated lengths of the microvoids increased as the temperature increased (Table 4), possibly because of the acid disruption of fiber structure.…”

Section: Saxs Studymentioning

confidence: 48%

Towards understanding structural changes of photoperiod-sensitive sorghum biomass during sulfuric acid pretreatment

Shi

Wang

2013

Bioresource Technology

View full text Add to dashboard Cite

Structure and properties of regenerated cellulose fibers from different technology processes

Cited by 109 publications

References 31 publications

Analysis of regenerated cellulose fibers with ionic liquids as a solvent as spinning speed is increased

Analysis of regenerated cellulose fibers with ionic liquids as a solvent as spinning speed is increased

Ionic Liquids for the Production of Man-Made Cellulosic Fibers: Opportunities and Challenges

Towards understanding structural changes of photoperiod-sensitive sorghum biomass during sulfuric acid pretreatment

Contact Info

Product

Resources

About