Wool felt: Characterization, comparison with other materials, and investigation of its use in hospital accessories

Santos, Heloisa Nazaré dos; Lana, Sebastiana Luiza Bragança; Neto, José Henrique Martins

doi:10.1177/0040517520915836

Cited by 5 publications

(3 citation statements)

References 15 publications

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“…A comparison with the results of previous reports confirms this. Santos et al, reported that wool felt with 672 g/m 2 of sericin showed a tensile strength of 4.3 MPa [35], and Silva et al reported that wool felt with 687 g/m 2 had a tensile strength of 4.22 MPa [36]. Therefore, considering that sericin-coated wool nonwoven fabric with 100 g/m 2 (i.e., it has much looser structure than those in the previous reports) showed a maximum stress of 4.08 MPa (32.5% sericin), this new preparation method of wool nonwoven fabric using the binding character of sericin can be an effective way to remarkably improve the strength of wool nonwoven fabric.…”

Section: Mechanical Properties Of the Sericin-coated Wool Nonwoven Fa...mentioning

confidence: 99%

Fabrication, Structural Characteristics, and Properties of Sericin-Coated Wool Nonwoven Fabrics

Lee,

Jang,

2023

IJMS

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Recently, nonwoven fabrics from natural silk have attracted considerable attention for biomedical and cosmetic applications because of their good mechanical properties and cytocompatibility. Although these fabrics can be easily fabricated using the binding character of sericin, the high cost of silk material may restrict its industrial use in certain areas. In this study, sericin was added as a binder to a cheaper material (wool) to prepare wool-based nonwoven fabrics and investigate the effect of the amount of sericin added on the structural characteristics and properties of the wool nonwoven fabric. It was found using SEM that sericin coated the surface of wool fibers and filled the space between them. With an increase in sericin addition, the porosity, moisture regain, and the contact angle of the sericin-coated wool nonwoven fabric decreased. The maximum stress and initial Young’s modulus of the nonwoven fabric increased with the increase in sericin amount up to 32.5%, and decreased with a further increase in the amount of sericin. Elongation at the end steadily decreased with the increase in sericin addition. All of the nonwoven fabrics showed good cytocompatibility, which increased with the amount of sericin added. These results indicate that sericin-coated wool-based nonwoven fabrics may be successfully prepared by adding sericin to wool fibers, and that the properties of these fabrics may be diversely controlled by altering the amount of sericin added, making them promising candidates for biomedical and cosmetic applications.

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Section: Mechanical Properties Of the Sericin-coated Wool Nonwoven Fa...mentioning

confidence: 99%

Fabrication, Structural Characteristics, and Properties of Sericin-Coated Wool Nonwoven Fabrics

Lee,

Jang,

2023

IJMS

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“…Bioactive composites and natural fibrous materials meet these requirements to the greatest extent [31]. Waste wool fibers are a potential source of thermal and acoustic applications due to their natural properties [32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Multilayer nonwoven lining materials made of wool and cotton for clothing and footwear

Rafikov

Mirzayev

Alimkhanova

2022

Journal of Industrial Textiles

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Five types of multilayer nonwovens for clothing and footwear parts were obtained by the adhesive bonding method. The thickest middle layer of the material consists of evenly laid coarse camel or sheep fibers or of reconstituted cotton fibers from flaps, the upper and lower layers consist of knitwear, and polymer adhesive is located between the layers. The layers are bonded by thermal pressing at a temperature of 150 ± 5°C for 2.0 ± 0.2 min. The microstructure and morphology of fibers, polymer adhesive, and multilayer nonwoven fabric were investigated by FT-IR spectroscopy, SEM, and X-ray phase analysis. The chemical interaction between wool fibers and polymer adhesive, the geometric dimensions and shape of the fibers, the structure and morphology of the cross section of the layers of the material, and the change in the degree of crystallinity of the material have been established. The investigated coarse and thick fibers of camel and sheep wool are more suitable for the production of nonwoven textile material. In the process of thermal exposure, the molten polymer diffuses into the structure of the nonwoven layer and knitted fabric. The diffusion and excellent adhesion of the molten polymer to the fibers ensures the solidity and strength of the composite. The developed design provides high strength of the material as a whole and adhesive strength between layers, high heat-retaining properties, and the use of a mesh adhesive film provides sufficient air and vapor permeability.

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“…These properties are closely related to the structure and performance of wool. However, it is also precisely because of the unique scale structure and mechanical properties of its fibers that wool products are prone to obvious felt shrinkage changes when subjected to external mechanical action in a humid and hot environment [ 1 , 2 ]. Moreover, this felt shrink cannot be recovered, seriously affecting the wearing performance and service life of wool products.…”

Section: Introductionmentioning

confidence: 99%

Development of Environmentally Friendly Wool Shrink-Proof Finishing Technology Based on L-Cysteine/Protease Treatment Solution System

Shen

et al. 2022

IJMS

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The particular scale structure and mechanical properties of wool fiber make its associated fabrics prone to felting, seriously affecting the service life of wool products. Although the existing Chlorine–Hercosett treatment has a remarkable effect, it can lead to environmental pollution. Therefore, it is of great significance to develop an environmentally friendly and effective shrink-proof finishing technology. For this study, L-cysteine was mixed with protease to form a treatment solution system for shrink-proof finishing of wool fibers. The reduction performance of L-cysteine and its effect on wool were compared with those of other reagents, demonstrating that L-cysteine has an obvious reduction and destruction effect on the wool scale layer. Based on this, L-cysteine and protease 16L were mixed in a certain proportion to prepare an L-cysteine/protease treatment solution system (L/PTSS). The shrink-proof finishing of a wool top was carried out by the continuous multiple-padding method, and the processing parameters were optimized using the response surface method. The results indicated that when the concentrations of L-cysteine and protease 16L were 9 g/L and 1 g/L, respectively, the wool was padded five times at 50 °C, and each immersion time was 30 s, the felt ball density of the treated wool reduced from 135.86 kg/m3 to 48.65 kg/m3. The structure and properties of the treated wool were also characterized using SEM, TG, and tensile strength tests, which indicated that the fiber scale structure was stripped evenly. Meanwhile, the treated fibers still retained adequate thermal and mechanical properties, indicating suitable application value. XPS, FT-IR, Raman, UV absorbance, and other test results revealed the reaction mechanism of L/PTSS with the wool fibers. After L-cysteine rapidly reduced the disulfide bonds in wool, protease can hydrolyze peptide chains more effectively, causing the scale layer to gradually peel off. Compared with the chlorination method and other protease shrink-proof technologies, L/PTSS can achieve the finishing effect on wool rapidly and effectively, without causing excessive pollution to the environment. The conclusions of this study provide a foundation for the development and industrial application of biological enzyme shrink-proof finishing technology.

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Wool felt: Characterization, comparison with other materials, and investigation of its use in hospital accessories

Cited by 5 publications

References 15 publications

Fabrication, Structural Characteristics, and Properties of Sericin-Coated Wool Nonwoven Fabrics

Fabrication, Structural Characteristics, and Properties of Sericin-Coated Wool Nonwoven Fabrics

Multilayer nonwoven lining materials made of wool and cotton for clothing and footwear

Development of Environmentally Friendly Wool Shrink-Proof Finishing Technology Based on L-Cysteine/Protease Treatment Solution System

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