Analysis of lecithin treatment effects on the structural transformation of wool fiber using vibrational spectroscopy

Barani, Hossein; Haji, Aminoddin; Maleki, Homa

doi:10.1016/j.ijbiomac.2017.11.167

Cited by 21 publications

(5 citation statements)

References 20 publications

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“…Wool-MOF comprises characteristic peaks of wool related to the peptide bond including amide A at 3374 cm -1 and amide B at 3068 cm -1 ascribed to N-H stretching vibrations along with amide I at 1650 cm -1 , amide II at 1519 cm -1 and amide III at 1238 cm -1 [46,47]. All of these confirm the nucleation of Zr-MOF onto the surface of wool.…”

Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 57%

Single-step Synthesis and Characterization of Zr-MOF onto Wool Fabric: Preparation of Antibacterial Wound Dressing with High Absorption Capacity

et al. 2021

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Improvement of curative herbal extracts effectiveness through novel drug delivery systems is a field of study for the researches nowadays. Zirconium-based metal-organic frameworks (Zr-MOFs) are one of the most capable porous nanocarriers that need a biocompatible template to be used in biomedical applications. In this work, Zr-MOF was synthesized into the wool fabric through in-situ one-pot method with different molar ratios. The final fabrics were characterized thoroughly using various techniques and the effect of components on monodispersity and nucleation tendency of Zr-MOF onto the surface of wool were explained. The resultant fabric stablished absolute wash durability, increased air-permeability up to twice and reasonable hydrophilicity. Tensile strength and young modulus decreased 30 and 1244 % and strain increased 66 %. Salvia Officinalis (SO) and Calendula Officinalis (CO) extracts were loaded onto the modified fabrics with 1154 and 1842 % increased absorption capacity. The release profiles showed domination of diffusion mechanism. The wool-MOF-SO and CO displayed both 100 % antibacterial activity against Escherichia coli and 60.95 and 64.64 % against Staphylococcus aureus because of diverse antibacterial components. Calendula Officinalis proved biocompatibility with human skin however Salvia Officinalis exhibited high toxicity.

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Section: Fourier Transform Infrared Spectroscopymentioning

confidence: 57%

Single-step Synthesis and Characterization of Zr-MOF onto Wool Fabric: Preparation of Antibacterial Wound Dressing with High Absorption Capacity

et al. 2021

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“…In addition, a new characteristic peak appeared at 669 cm −1 in the spectrum of the treated fibers. According to the literature, this peak was mainly caused by the stretching vibration of the C–S bond [ 40 ]. The increase in C–S bond content may be related to the destruction of disulfide bonds and the formation of sulfonate radicals.…”

Section: Resultsmentioning

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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“…The peak is associated with CH 2 bending mode and not affected by other factors. 29 The ratio of disulphide bond intensity (511 cm −1 ) to intensity of the peak located at 1451 cm −1 can reflect the disulphide bonds concentration in wool. 30 After calculations were done, results indicated that the ratio of the raw wool (1.3) was higher than that of the modified wool (1.1).…”

Section: Disulphide Bond Analysismentioning

confidence: 99%

Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite

Jiang

Zhang

et al. 2021

Coloration Technology

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Wool is a natural biopolymer with special properties, including warmth retention and skin-friendliness. However, its application in the textile industry is limited by the scale layer that covers its surface, which prevents the efficient diffusion of dye into the interior of its fibres, and increases wool's susceptibility to shrinkage during washing. Here, dissolution with sodium bisulphite is used for wool surface modification. The properties of surface dissolved wool are comprehensively characterised, including strength loss, shrinkage rate and dyeability. The three-dimensional images indicated that scale layer was etched. Coupled with Fourier-transform infrared (FTIR) spectra, the test results of strength loss and shrinkage rate indicated that surface dissolution degree can be controlled by time and temperature, and that the process does not break the fibre's main body structure. Dyeability properties, including dye absorption rate, deepness and uniformity at a lower temperature were enhanced, indicating amenability to industrial production. Our findings highlight a novel, efficient method of modifying protein fibre surface for enhancing properties with potential for largescale application.How to cite this article: Jiang Z, Zhang Y, Zhang N, et al. Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite.

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Analysis of lecithin treatment effects on the structural transformation of wool fiber using vibrational spectroscopy

Cited by 21 publications

References 20 publications

Single-step Synthesis and Characterization of Zr-MOF onto Wool Fabric: Preparation of Antibacterial Wound Dressing with High Absorption Capacity

Single-step Synthesis and Characterization of Zr-MOF onto Wool Fabric: Preparation of Antibacterial Wound Dressing with High Absorption Capacity

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

Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite

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