Production of rayon fibres from cellulosic pulps: State of the art and current developments

Mendes, Inês S. F.; Prates, António; Evtuguin, Dmitry V.

doi:10.1016/j.carbpol.2021.118466

Cited by 60 publications

(37 citation statements)

References 207 publications

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“…In this sense, lignocellulosic biomass wastes, such as those generated in pruning or agricultural activities, could be transformed in biorefineries to obtain biocompounds and biofuels of highly interesting industrial applications [ 1 ]. Cellulose fibers and nanofibers could be valuable alternative feedstocks to obtain sustainable textiles or biopolymer-reinforced composites, which could contribute significantly to the production of sustainable and low environmental footprint biobased compounds [ 2 , 3 , 4 , 5 , 6 ]. Thus, these wastes constitute a renewable raw material available in large quantities and at low cost, lacking other economically viable applications and whose disposal is necessary from an environmental point of view.…”

Section: Introductionmentioning

confidence: 99%

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Pérez-Aguilar¹,

Ruzafa-Silvestre²,

Arán-Aı́s³

2022

Polymers

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This paper briefly discusses the utilization of pruning wastes as a lignocellulosic source of cellulose fibers, which could be of potential use in the development of valuable materials such as sustainable textiles and fillers for footwear components including uppers and soles. Phoenix canariensis palm leaves, one of the most common plants found in the local environment of the Alicante region (Spain), was used as a biomass raw material. Determining appropriate processing parameters and their desired range of maximum cellulose extraction states is key to improving yields. Therefore, this study aimed at determining the effect of processing conditions on cellulose extraction by optimizing the hydrothermal process, as a part of overall combined processes involving several steps. Specifically, the time of the steam-explosion stage was varied between 15 and 33 min in order to maximize the cellulose extraction yield. The composition of both the extracted fibers and the resulting by-product solutions generated during the different steps were determined by FTIR and TGA in order to analyze the effectiveness of removing hemicellulose, lignin and extractives as well as the removed substances at each stage for their further valorization. Additionally, the morphology of cellulosic fibers was evaluated by SEM and their crystallinity by XRD. Crystalline cellulose fibers were successfully extracted from pruning biomass wastes, achieving more efficient removal of hemicellulose and lignin when the hydrothermal process was assessed over 25–33 min. This resulted in finer and smoother fibers, but the crystallinity of α-cellulose decreased as the time of steam-explosion increased to 33 min. The characterization of waste solutions generated after the different extraction steps confirmed that the most effective treatments to remove lignin and hemicellulose from the cell wall are alkaline pretreatment and a hydrothermal process.

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Section: Introductionmentioning

confidence: 99%

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Pérez-Aguilar¹,

Ruzafa-Silvestre²,

Arán-Aı́s³

2022

Polymers

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“…However, with the increase in the draw ratio to 1.4, the tensile strength of CRCFs decreased, and the bers were liable to break during spinning. At a draw ratio of 1.35, the tensile strength of CRCFs reached 226 MPa, which is equivalent to that of commercial viscose bers (Mendes et al 2021). This result indicates that the strength of CRCFs meets the weaving requirement.…”

Section: Effect Of Draw Ratio On Tensile Stress Of Crcfsmentioning

confidence: 83%

Closed-loop recycling of colored regenerated cellulose fibers from the dyed cotton textile waste

Liu

Fan²,

Miao³

et al. 2022

Cellulose

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Worldwide, 45 million tons of waste cotton textiles are produced annually, of which 75% is burned and buried, leading to serious environmental pollution. In this study, a method for directly preparing colored regenerated cellulose bers (CRCFs) from dyeing cotton textile waste (DCTW) was demonstrated. The tensile strength of CRCFs reached 226 MPa, which was equivalent to that of commercial viscose bers.CRCFs exhibited excellent color fastness and hydrophilicity. In addition, CRCFs can be reprocessed into secondary CRCFs. The tensile strength of secondary CRCFs was 14.64% less than that of the primary CRCFs due to the reduction in the polymerization degree of secondary CRCFs; However, it also can be woven into fabrics. The exploration of the secondary utilization of CRCFs provides an experimental basis for prolonging the service life of DCTW. This approach of preparing CRCFs achieves closed-loop recycling of waste colored cellulose textiles and prevents environmental pollution caused by decoloring and dyeing.

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“…Notably, silkworm cultivation began only during 2700 BC, and around 1300 BC, spindles were invented progressing into production of fabrics and clothes from wool and cotton leading to the establishment of textile industry in 1880s. Plantbased materials namely cotton or wood cellulose fibers were efficiently used by man to create the first synthetic product, Rayon, in 1891 [18].…”

Section: Electrospinning: State Of the Artmentioning

confidence: 99%

An overview on electrospinning and its advancement toward hard and soft tissue engineering applications

Muthukrishnan

2022

Colloid Polym Sci

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One of the emerging technologies of the recent times harboring nanotechnology to fabricate nanofibers for various biomedical and environmental applications are electrospinning (nanofiber technology). Their relative ease in use, simplicity, functionality and diversity has surpassed the pitfalls encountered with the conventional method of generating fibers. This review aims to provide an overview of electrospinning, principle, methods, feed materials, and applications toward tissue engineering. To begin with, evolution of electrospinning and its typical apparatus have been briefed. Simultaneously, discussion on the production of nanofibers with diversified feed materials such as polymers, small molecules, colloids, and nanoparticles and its transformation into a powerful technology has been dealt with. Further, highlights on the application of nanofibers in tissue engineering and the commercialized products developed using nanofiber technology have been summed up. With this rapidly emerging technology, there would be a great demand pertaining to scalability and environmental challenge toward tissue engineering applications.

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Production of rayon fibres from cellulosic pulps: State of the art and current developments

Cited by 60 publications

References 207 publications

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Effect of Processing Time of Steam-Explosion for the Extraction of Cellulose Fibers from Phoenix canariensis Palm Leaves as Potential Renewable Feedstock for Materials

Closed-loop recycling of colored regenerated cellulose fibers from the dyed cotton textile waste

An overview on electrospinning and its advancement toward hard and soft tissue engineering applications

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