Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (10): 27-33.doi: 10.13475/j.fzxb.20201201207

• Fiber Materials • Previous Articles     Next Articles

Analysis on factors influencing solution of Lyocell fiber spinning pulp

PAN Yile1, QIAN Liying1, XU Jigang2, HE Beihai1, LI Junrong1()   

  1. 1. School of Light Industry and Engineering, South China University of Technology, Guangzhou, Guangdong 510640, China
    2. State Key Laboratory of Biobased Fiber Manufacturing Technology, China Textile Academy, Beijing 100025, China
  • Received:2020-12-07 Revised:2021-06-05 Online:2021-10-15 Published:2021-10-29
  • Contact: LI Junrong E-mail:lljrr@scut.edu.cn

RichHTML

18

PDF (PC)

155

Abstract:

In order to explore the factors affecting the solubility of Lyocell fiber spinning pulp, four different dissolving pulps were analyzed to study the influence of their chemical composition, crystallinity, degree of polymerization and fiber morphology on the solubility of dissolving pulp in N-methylmorpholine-N-oxide (NMMO). The results showed that the dissolution of pulp experienced the suspension stage, swelling stage and dissolution stage. The higher the proportion of non-uniform swelling of fibers in the swelling stage, the longer the dissolution time. When the pulp quality meets the raw material standard for preparing Lyocell fiber, the trace lignin on the fiber surface plays a major role in dissolving the pulp. Lignin is deposited on the surface of the fiber through adsorption, and is combined with cellulose through hydrogen bonds to weaken fiber swelling. At the same time, hydrophobic lignin hindered the penetration of NMMO into the fiber and increased the dissolution time.

Key words: Lyocell fiber, solubility, N-methylmorpholine-N-oxide, pulp composition, lignin distribution

CLC Number: 

  • TS151

Fig.1

Dissolution process of DPFJ in NMMO.(a) Initial stage;(b) Suspension stage;(c) Swelling stage;(d) Dissolution stage"

Fig.2

Dynamic dissolution diagram of four dissolving pulps in NMMO"

Tab.1

Main chemical composition and degree of polymerization of four dissolving pulps"

样品 α-纤维
素含
量/%		 聚合
度		 结晶
度/%		 灰分含
量/%		 铁离子质
量浓度/
(mg·kg-1)		 白度/
%
DPMG 93.63 671 82.37 0.12 2.62 93.63
DPFJ 93.02 667 82.49 0.16 11.87 88.21
DPADL 93.03 737 83.56 0.06 3.82 92.07
DPRD 92.37 662 80.32 0.07 3.11 91.78

Fig.3

X-ray diffraction patterns of four dissolving pulps"

Fig.4

LSCM images of four dissolving pulps"

Tab.2

Morphological parameters of four dissolving pulp fibers"

样品 重均长
度/mm		 长宽比 粗度/
(mg·m-1)		 细小纤维
含量/%		 弯曲指
数/%
DPMG 1.34 51.98 0.14 5.12 23.01
DPFJ 1.99 70.25 0.14 2.13 14.93
DPADL 1.37 53.22 0.19 7.86 21.34
DPRD 1.39 55.06 0.13 3.54 24.52

Fig.5

Fiber length distribution in four dissolving pulps"

Fig.6

SEM images of fiber morphology of four dissolving pulps(×300)"

[1] 赵家森, 王渊龙, 程博闻. 绿色纤维素纤维:Lyocell纤维[J]. 纺织学报, 2004, 25(5):124-126.
ZHAO Jiasen, WANG Yuanlong, CHENG Bowen. Green cellulose fibe:Lyocell fiber[J]. Journal of Textile Research, 2004, 25(5):124-126.
doi: 10.1177/004051755502500205
[2] 孙玉山, 徐纪刚, 李昭锐, 等. 新溶剂法纤维素纤维开发概况与展望[J]. 纺织学报, 2014, 35(2):126-132.
SUN Yushan, XU Jigang, LI Zhaorui, et al. Development survey and outlook of new solvent process regenerated cellulose fibers[J]. Journal of Textile Research, 2014, 35(2):126-132.
[3] 沈葵忠, 房桂干, 韩善明, 等. 溶解浆的质量指标及生产技术述评[J]. 林业工程学报, 2018, 3(5):12-19.
SHEN Kuizhong, FANG Guigan, HAN Shanming, et al. Quality specification of dissolving pulp and prospects of production technologies[J]. Journal of Forestry Engineering, 2018, 3(5):12-19.
doi: 10.12737/issue_58f9e0f00a07e4.12485634
[4] 王霞, 韩荣桓, 孙华鹏, 等. 浆粕质量对lyocell纤维生产及产品质量的影响[J]. 化工管理, 2019, 32(14):31-32.
WANG Xia, HAN Ronghuan, SUN Huapeng, et al. The effect of pulp quality on lyocell fiber production and product quality[J]. Chemical Management, 2019, 32(14):31-32.
[5] 杨革生, 魏孟媛, 杨彦菊, 等. 纤维素性质对纤维素溶液可纺性以及纤维性能的影响[J]. 纤维素科学与技术, 2019, 27(1):1-7.
YANG Gesheng, WEI Mengyuan, YANG Yanju, et al. Effect of cellulose on the spinnability of dope and the properties of Lyocell fiber[J]. Journal of Cellulose Science and Technology, 2019, 27(1):1-7.
[6] SAYYED A J, GUPTA D, DESHMUKH N A, et al. Influence of intensified cellulose dissolution process on spinning and properties of Lyocell fibres[J]. Chemical Engineering and Processing: Process Intensification, 2020, 155:108063.
doi: 10.1016/j.cep.2020.108063
[7] 王铁晗, 靳宏, 元伟, 等. 改性Lyocell纤维的研究开发进展[J]. 纺织导报, 2020(7):38-44.
WANG Tiehan, JIN Hong, YUAN Wei, et al. R&D progress of the modified Lyocell fibers[J]. China Textile Leader, 2020(7):38-44.
[8] ERDMAN A, KUPINSKI P, GABOR J, et al. Luminescent cellulose fibers modified with poly((9-carbazolyl)methylthiirane)[J]. Polymers, 2020, 12(10):2296-2296.
doi: 10.3390/polym12102296
[9] 石淑兰, 何福望. 制浆造纸分析与检测[M]. 北京: 中国轻工业出版社, 2003: 333-335.
SHI Shulan, HE Fuwang. Analysis and detection of pulp and paper[M]. Beijing: China Light Industry Press, 2003: 333-335.
[10] SAYYED A J, MOHITE L V, DESHMUKH N A, et al. Intensification of lyocell dissolution process and dope characteristics using pre-swelled cellulosic pulp[J]. Chemical Engineering and Processing: Process Intensification, 2020, 148:107826.
doi: 10.1016/j.cep.2020.107826
[11] 李庆春, 黄知清, 杨春波, 等. Lyocell纤维适用浆粕的研究[J]. 人造纤维, 2001, 31(5):4-7.
LI Qingchun, HUANG Zhiqing, YANG Chunbo, et al. Research on the suitable pulp of Lyocell fiber[J]. Artificial Fibre, 2001, 31(5):4-7.
[12] KIM S, JANG J. Effect of degree of polymerization on the mechanical properties of regenerated cellulose fibers using synthesized 1-allyl-3-methylimidazolium chloride[J]. Fibers and Polymers, 2013, 14(6):909-914.
doi: 10.1007/s12221-013-0909-6
[13] ISOGAI A, ATALLA R. H. Dissolution of cellulose in aqueous NaOH solutions[J]. Cellulose, 1998, 5(4):309-319.
doi: 10.1023/A:1009272632367
[14] REEVE D W. Imaging wood pulp fiber surface lignin by fluorescence confocal laser scanning microscopy[J]. Journal of Tianjin University of Science & Technology, 2004, 19(2):72-80.
[15] MAXIMOVA N, OSTERBERG M, KOLJONEN K, et al. Lignin adsorption on cellulose fibre surfaces: effect on surface chemistry, surface morphology and paper strength[J]. Cellulose, 2001, 8(2):113-125.
doi: 10.1023/A:1016721822763
[16] MAXIMOVA N, STENLUS P, SALMI J. Lignin uptake by cellulose fibres from aqueous solutions[J]. Nordic Pulp and Paper Research Journal, 2004, 19(2):135-145.
doi: 10.3183/npprj-2004-19-02-p135-145
[17] PERRZ D, RUGGIERO R, MORAIS L C, et al. Theoretical and experimental studies on the adsorption of aromatic compounds onto cellulose[J]. Langmuir, 2004, 20(8):3151-3158.
doi: 10.1021/la0357817
[18] SESCOUSSE R, SMACCHIA A, BUDTOVA T. Influence of lignin on cellulose-NaOH-water mixtures properties and on aero cellulose morphology[J]. Cellulose, 2010, 17(6):1137-1146.
doi: 10.1007/s10570-010-9448-0
[19] 李春花, 徐纪刚, 程春祖, 等. 纤维素浆粕在NMMO/H2O中的溶胀行为研究[J]. 纺织学报, 2014, 35(2):116-120.
LI Chunhua, XU Jigang, CHENG Chunzu, et al. Study on swelling behaviors of cellulose pulp in NMMO/H2O[J]. Journal of Textile Research, 2014, 35(2):116-120.
[1] . Influence of lyocell fiber spinning pulp type on solubility [J]. , 2021, 42(10): 0-0.
[2] JIN Hong, ZHANG Yue, ZHANG Yumei, WANG Huaping. Predicting stability of solvent in dope-dyed Lyocell solution based on molecular simulation [J]. Journal of Textile Research, 2021, 42(10): 1-7.
[3] LIN Shenggen, LIU Xiaohui, SU Xiaowei, HE Ju, REN Yuanlin. Preparation and properties of Lyocell fibers and fabrics modified with new phytic acid based flame retardant [J]. Journal of Textile Research, 2021, 42(07): 25-30.
[4] HUANG Wei, CHENG Chunzu, ZHANG Jiayu, ZHANG Chenxi, CHENG Min, XU Jigang, LIU Yunchong. Preparation and characterization of high fibrillation Lyocell fiber [J]. Journal of Textile Research, 2021, 42(06): 41-45.
[5] WANG Chunyi, WU Wei, WANG Jian, XU Hong, MAO Zhiping. Molecular dynamics simulation of solubility of C.I. Disperse Brown 19 in supercritical CO2 and water [J]. Journal of Textile Research, 2020, 41(09): 95-101.
[6] YUAN Wei, YAO Yongbo, ZHANG Yumei, WANG Huaping. Alkaline enzyme treatment process for preparation of Lyocell cellulose pulp [J]. Journal of Textile Research, 2020, 41(07): 1-8.
[7] HU Jinhua, YAN Jun, LI Hong, PENG Jianjun, ZHENG Laijiu, ZHENG Huanda, HE Tingting. Measurement and model fitting for solubility of Disperse Red 11 in supercritical CO2 [J]. Journal of Textile Research, 2019, 40(08): 80-84.
[8] CHENG Tong, YAO Yongbo, CHEN Zhongli, JIN Hong, WU Kaijian, WANG Lejun, LIU Yining, ZHANG Yumei. Preparation of flame retardant aromatic polysulfonamide/cellulose fibers with N-methylmorpholine-N-oxide monohydrate as solvent [J]. Journal of Textile Research, 2019, 40(07): 1-76.
[9] SHEN Yanqin, YANG Shu, WU Hailiang, WANG Zhongliang. Research progress of medium and low temperature water-soluble textile starch size [J]. Journal of Textile Research, 2019, 40(06): 142-151.
[10] QIAN Lumin, ZHANG Bin. Preparation and characterization of soluble hemostatic medical cotton gauze [J]. Journal of Textile Research, 2019, 40(05): 102-106.
[11] . Preparation of phase change Lyocell fiber and influence of microcapsule on solvent recovery [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(06): 1-5.
[12] . Synthesis and properties of water soluble quaternary ammonium cationic starch sizing materials [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(11): 73-78.
[13] . Research progress on textile finishing with assistance of supercritical carbon dioxide [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(11): 177-184.
[14] . Study on the concentration and recovery of cellulose solvent N-methylmorpholine-N-oxide by vacuum menbrane distillation [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(08): 16-22.
[15] . Status and development research of Lyocell fiber at home and abroad [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(04): 164-170.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd