Preparation and physical properties of regenerated cellulose fibres from cotton waste garments

Haule, Liberato; Carr, Chris; Rigout, Muriel

doi:10.1016/j.jclepro.2015.08.086

Cited by 102 publications

(70 citation statements)

References 28 publications

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“…The alkaline bleaching step on its own was not effective in dissolving the DMDHEU-treated wrinkle-free cotton in CED, but after the removal of DMDHEU and reactive dyes with the sequential acid step, the pulps were soluble in CED. The low solubility in CED of wrinkle-free DMDHEU-treated cotton fabrics confirms previous findings of Haule et al [13] that a combined alkaline/acid sequence effectively hydrolyses the DMDHEU wrinkle-free finish. Interestingly, the present study also found that the reactive dyes needed to be removed from the cotton fabric in an alkaline/acid bleaching sequence to obtain the limiting viscosity number of the pulp and hence a material suitable for the viscose process.…”

Section: Bleaching Of Cotton Fabricssupporting

confidence: 89%

“…Furthermore, Haule et al [6] demonstrated that the easy-care DMDHEU crosslinker could successfully be removed from cotton cellulose by applying 23 wt% sodium hydroxide solution at 100 °C, followed by concentrated sulphuric acid and then rinsing in 23 wt% sodium hydroxide solution at 100 °C. A later publication reported that cotton pulp was successfully dissolved and spun into regenerated lyocell fibres with mechanical properties superior to those of standard lyocell fibres [13]. Likewise, reactive dyes are covalently bonded to the cellulose polymer and need to be removed in a pretreatment stage.…”

Section: Introductionmentioning

confidence: 99%

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Preparation of Viscose Fibres Stripped of Reactive Dyes and Wrinkle-Free Crosslinked Cotton Textile Finish

et al. 2018

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The chemical recycling of cellulosic fibres may represent a next-generation fibre-fibre recycling system for cotton textiles, though remaining challenges include how to accommodate fibre blends, dyes, wrinkle-free finishes, and other impurities from finishing. These challenges may disrupt the regeneration process steps and reduce the fibre quality. This study examines the impact on regenerated viscose fibre properties of a novel alkaline/acid bleaching sequence to strip reactive dyes and dimethyloldihydroxyethyleneureas (DMDHEU) wrinkle-free finish from cotton textiles. Potentially, such a bleaching sequence could advantageously be integrated into the viscose process, reducing the costs and environmental impact of the product. The study investigates the spinning performance and mechanical properties (e.g., tenacity and elongation) of the regenerated viscose fibres. The alkaline/acid bleaching sequence was found to strip the reactive dye and DMDHEU wrinkle-free finish from the cotton fabric, so the resulting pulp could successfully be spun into viscose fibres, though the mechanical properties of these fibres were worse than those of commercial viscose fibres. This study finds that reactive dyes and DMDHEU wrinkle-free finish affect the viscose dope quality and the regeneration performance. The results might lead to progress in overcoming quality challenges in cellulosic chemical recycling.

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Section: Bleaching Of Cotton Fabricssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Preparation of Viscose Fibres Stripped of Reactive Dyes and Wrinkle-Free Crosslinked Cotton Textile Finish

et al. 2018

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“…Traditionally, recycling is achieved by drawing fabrics into yarns and fibers, and then, reassembling them into recyclable yarns for the production of textiles and other materials, such as nonwovens, carpet liners [5], sound insulation materials, thermal insulation materials [6], deodorizing materials, and filtering materials; thus, converting waste garments into recyclable ones [7].…”

Section: Introductionmentioning

confidence: 99%

Dyeing and Characterization of Cellulose Powder Developed from Waste Cotton

et al. 2019

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In this study, waste cotton fibers were environmentally reused. First, they were milled into fine powders with particle sizes of around 30 µm and dyed for use as pigments. Dyeing properties of the cellulose powder were explored by determining the dye uptake, K/S value, and bath ratio. Among the various samples, powders with owf (on weight of fabric) of 0% dye (pristine cellulose powder), and 10% and 50% dyed powders were selected; and these powders were characterized by several methods to compare the properties of dyed and undyed cellulose. The surface morphologies of the powders were observed with a scanning electron microscope (SEM). Combining the SEM images with the Brunauer-Emmet-Teller (BET) data, it was found that the smaller the particle size, the larger is the surface area. In addition, the X-ray photoelectron spectroscopy (XPS) results revealed that with increasing dye concentration, the intensity of the C peak reduced, while those of O and S increased. Moreover, the main components of the dyed and undyed cellulose powders were found to be almost the same from the Fourier-transform infrared spectroscopy (FTIR) results. Finally, the dynamic mechanical analysis (DMA) data revealed that the loss modulus was significantly larger than the storage modulus, demonstrating that the material mainly undergoes viscous deformation.

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“…Both Saxcell 7 and Haule et al [10][11][12] have taken another step by utilizing their cotton waste pulps to make fibers. Saxcell claim to have succeeded both by the viscose and lyocell processes, 7 whereas Haule et al [10][11][12] utilized the lyocell process. In a recent press release, Lenzing 13 announced the launch of Refibra TM , a version of TENCEL Õ fiber made out of cotton scrap and wood pulp.…”

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confidence: 99%

Textile qualities of regenerated cellulose fibers from cotton waste pulp

Björquist

Aronsson

Henriksson³

et al. 2017

Textile Research Journal

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Cotton is not the answer to meet the rapidly growing demand for textile fibers. Wood-based regenerated cellulose fibers are an attractive alternative. Since wood is a candidate to replace fossil raw materials in so many applications of the circular economy, other sources need investigation. Cotton linters work in the viscose process -can cotton waste be used to make dissolving pulp? We describe the textile qualities of lyocell fibers from (i) pure cotton waste pulp and (ii) blending with conventional dissolving pulp. The staple fibers were tensile tested, yarns spun and tensile tested and knitted, and tested for shrinkage, water and dye sorption, abrasion resistance, fuzzing and pilling, staining and fastness. TENCEL Õ staple fibers and off-the-shelf TENCEL Õ yarn were used as references. The results show that the two study fibers had tenacity and an E-modulus that exceeded the staple fiber reference. Also, the study yarns were at least as good as the spun reference yarn and the commercial off-the-shelf yarn in terms of wet tenacity. Single jerseys made from the study yarns shrunk less upon laundering, which is surprising since they could absorb at least as much water at a comparable rate as the references. Dyeability, staining and color fastness, durability and pilling tendency showed that the two study fiber tricots performed at least as good as the references. This study suggests that cotton waste is a promising candidate for special grade pulp to suit niche regenerated fiber products or to spice up conventional woodbased dissolving pulp.

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Preparation and physical properties of regenerated cellulose fibres from cotton waste garments

Cited by 102 publications

References 28 publications

Preparation of Viscose Fibres Stripped of Reactive Dyes and Wrinkle-Free Crosslinked Cotton Textile Finish

Preparation of Viscose Fibres Stripped of Reactive Dyes and Wrinkle-Free Crosslinked Cotton Textile Finish

Dyeing and Characterization of Cellulose Powder Developed from Waste Cotton

Textile qualities of regenerated cellulose fibers from cotton waste pulp

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