Preparation and properties of cotton stalk bark fibers using combined steam explosion and laccase treatment

Hou, Xiuliang; Zhang, Li; Wizi, Jakpa; Liao, Xiangru; Ma, Bomou; Yang, Yiqi

doi:10.1002/app.45058

Cited by 10 publications

(8 citation statements)

References 27 publications

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“…The damage of the bast fibers was aggravated with the increase of cellulase dosage. These changes represented greater accessibility of cellulose [65], which was consistent with the analysis results of the micro-CT images.…”

Section: Sem Image Analysissupporting

confidence: 88%

“…For example, the economic and environmental cotton stalk was used to produce nanocrystalline cellulose aerogel, and its performance was close to that of cotton producing nanocrystalline cellulose aerogel [64]. The performances of cotton stalk bark fiber prepared by the combined treatment of steam explosion and laccase are better than that of only steam explosion method, and its performances could meet the requirements of textile fibers [65]. Liu et al used Ganoderma lucidum white-rot fungi to grow cotton stalk, and prepared a new type of sustainable mycelium/cotton stalk composite materials by hot-pressed at 200 °C.…”

Section: Introductionmentioning

confidence: 99%

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Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Xie

Tian

Liu

et al. 2022

Adv Compos Hybrid Mater

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There are plant cuticle and complex cell walls on the outer surface of cotton stalk bark (CSB), which reduce the efficiency of liquid penetration of CSB. To increase the permeability of liquids, these barriers need to be broken. Cellulase can selectively hydrolyze cellulose into glucose, and its action conditions are mild. Therefore, cellulase treatment is one of the excellent ways to break the CSB liquid permeation barrier. This experiment studied the effects of different amounts of cellulase treatment on the enzymatic hydrolysis products and surface of CSB. Scanning electron microscopy (SEM) and nano-CT were used to observe the changes in the microscopic morphology of CSB. Ion chromatography and an ultraviolet–visible spectrophotometer were used to determine the dissolution of CSB. The results showed that the cuticle of CSB treated with cellulase was broken, and the cell wall of phloem fibers became thinner, which increased the accessibility of liquid. The content of monosaccharide and lignin in CSB treatment solution increased with the increase of cellulase dosage. Correspondingly, the proportion of polysaccharides on the outer surface of CSB continued to decline and eventually stabilized. These experimental results can provide a reference for improving the permeability of natural fibers and the subsequent treatment effects of biomass products. Graphical abstract The pretreatment of cotton stalk barks with cellulase destroyed the dense protective structure of cell wall, and the content of monosaccharide and lignin in the treated solution increased with the increase of cellulase dosage.

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Section: Sem Image Analysissupporting

confidence: 88%

Section: Introductionmentioning

confidence: 99%

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Xie

Tian

Liu

et al. 2022

Adv Compos Hybrid Mater

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show abstract

“…The crystallinity was characterized using the crystallinity index (I c ). 17 The self-heating property of PVF was determined by GB/T 29866-2013 (textiles-test method for heat generating by moisture absorption properties). 18 Scanning electron microscopy (SEM) images were taken using a S4800 II cold-cathode field-emission SEM (Hitachi, Japan) at various accelerating voltages of 10-15 kV.…”

Section: Characterization Of Prepared Samplesmentioning

confidence: 99%

Preparation and characterization of protein/viscose fiber and its action in self‐heating

Wei

Zhao

et al. 2018

J of Applied Polymer Sci

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In order to develop a self-heating fiber using the protein/viscose fiber (PVF), keratin, and cotton pulp were used as the raw materials, silk protein was used as the crosslinking agent to fix the keratin to cellulose. The viscose fibers (VFs) blended by protein were prepared by the wet spinning method, and the properties of the fiber were investigated. The results indicated that the more PVF had protein, the better PVF had property. In order to prevent the loss of protein, the protein content of the spinning liquor should be maintained around 2.5%. Compared with VF, PVF had better self-heating property (6.1 C/5 min), higher breaking strength (2.44 cN/dtex), higher elongation-at-break (27.5%), higher moisture regain (12.68%), and higher hand feel score (8.4),which meets the requirement of textile fibers. PVFs are promising materials for functional clothing applications.

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“…4,5 Lignocellulose biomass generally existed in wood, grasses, dedicated crops, and agricultural residues in nature. 6 Given the low cost and high production, the importance of employing agricultural residues as resources has been gradually recognized. Wheat straw (WS) was considered the main kind of agricultural residue, which was estimated at over 80 million tons annually in China.…”

Section: Introductionmentioning

confidence: 99%

Characteristic comparison of lignocellulose nanofibrils from wheat straw having different mechanical pretreatments

Yan

et al. 2022

J of Applied Polymer Sci

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Wheat straw (WS) was considered the most abundant agricultural residue in China. Therefore, it was meaningful to explore the effective utilization of WS. Thus far, WS has been considered a potential raw material to produce lignocellulose nanofibrils (LCNFs) with the rapid development of nanotechnology. Unfortunately, the existing methods of LCNFs preparation directly from WS still faced some hurdles. Herein, screw extrusion and ball milling considered the common mechanical pretreatments were employed to directly prepare LCNFs from WS. The different impacts of screw extrusion and ball milling pretreatments on the properties of LCNFs were revealed by systematically comparing physicochemical analyses. The results showed that the crystalline and chemical structure of samples was little affected by the mechanical pretreatment. However, the mechanical pretreatment caused a change in the morphology, yield, and chemical composition of LCNFs. LCNFs prepared by screw extrusion with a high yield of 73% had the narrowest diameter distribution (0 ~ 80 nm), the most cellulose content (51.1%), and the maximum crystallinity degree (44.7%). LCNF samples all exhibited good thermal stability. This work could not only offer theoretical guidance on the preparation of LCNFs by mechanical pretreatments but also expand the high‐value application of WS in polymer composites.

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Preparation and properties of cotton stalk bark fibers using combined steam explosion and laccase treatment

Cited by 10 publications

References 27 publications

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Effects of different amounts of cellulase on the microstructure and soluble substances of cotton stalk bark

Preparation and characterization of protein/viscose fiber and its action in self‐heating

Characteristic comparison of lignocellulose nanofibrils from wheat straw having different mechanical pretreatments

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