Antimicrobial and physical properties of woolen fabrics cured with citric acid and chitosan

Hsieh, Sung-Huang; Huang, Zhonghua; Huang, Zuhua; Tseng, Z. S.

doi:10.1002/app.21104

Cited by 108 publications

(49 citation statements)

References 21 publications

(20 reference statements)

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“…Thus, it is concluded that under the conditions of these experiments, chitosan and citric acid reacted to form an acyclic amide. This is analogous to reports of woolÁcitric acid derivatives prepared by a similar technique (17).…”

Section: Resultssupporting

confidence: 89%

Modification of chitosan films with environmentally benign reagents for increased water resistance

Cui

Beach

Anastas

2011

Green Chemistry Letters and Reviews

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Chitosan is a non-toxic, renewable, abundant natural material with excellent film-forming properties. It is shown here that water absorption by chitosan films can be decreased by chemical modification with the bio-based reagents citric acid and glycerol. Infrared spectroscopy showed that citric acid reacted with chitosan amine groups to form an acyclic amide structure. Glycerol imparted flexibility and water repellency to the films. When soaked in water for six hours, a chitosanÁcitric acidÁglycerol (1:1:9) film absorbed 44% water by weight after initial exposure and remained unchanged for the duration of the experiment. In comparison, a pure chitosan membrane initially absorbed 70% water and gradually increased to 96%. After soaking, the modified film swelled by only 11% compared to 42% for pure chitosan. Similar results were observed for water contact angle with the film surfaces. For the modified film, change in contact angle over time could be attributed solely to evaporation, whereas the pure chitosan film absorbed the droplets. These results show that the properties of chitosan can be improved using environmentally benign reagents in accordance with green chemistry principles.

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Section: Resultssupporting

confidence: 89%

Modification of chitosan films with environmentally benign reagents for increased water resistance

Cui

Beach

Anastas

2011

Green Chemistry Letters and Reviews

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“…It is made up of more than 18 amino acids, which can be alienated into four distinct groups: cationic, anionic, non-polar and polar. The main functional groups include carboxyl, amino and hydroxyl groups [33]. Overall, all wool fibers exhibited similar absorption at 3260 cm Fig.…”

Section: Fig 1 (A) Uv-visible Spectra (B) Ft-ir Spectra (C) Sem mentioning

confidence: 83%

UV Protection and Antibacterial Treatment of Wool using Green Silver Nanoparticles

Mahmud¹,

Pervez²,

Habib³

et al. 2017

Asian J. Chem.

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Herein, we attempted a new green based silver nanoparticles employing sodium alginate (Na-Alg) as reducing agent to functionalize wool fabric surface. This research aims to enhance the antimicrobial activity and UV resistance of wool fabrics treated with synthesized silver nanoparticles. The resulting products were characterized by scanning electron microscopy, Fourier transform infrared spectroscopy spectra (FTIR), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and UV-visible absorbance. The results specified that silver nanoparticles (AgNPs) were successfully assembled on wool surface when liquor pH and temperature of application medium were adjusted to 4 and 40 ºC, respectively for 2 h. Thermogravimetric analysis indicated that the combined finishing of wool fabric with AgNPs could improve its thermal property. It was observed that the presence of green based AgNPs significantly enhanced the UV resistance and antibacterial activity of fabrics particularly for samples coated with 70 ppm AgNPs. These promising results support that the present approach is useful for the fabrication of antimicrobial and UV protector fabrics.

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“…4. In the FTIR spectroscopy, the main characteristic peaks appeared between 1,000 and 1,700 cm -1 , which are related to amide I (1,600-1,700 cm -1 ), amide II (1,500-1,600 cm -1 ), and sulfoxide (1,000-1,150 cm -1 ) [26]. Plasma treatment with oxygen gas can impart or enhance functional groups on the surface of textile substrate [27].…”

Section: Resultsmentioning

confidence: 99%

Effects of Oxygen Plasma Treatment on the Physical and Chemical Properties of Wool Fiber Surface

Barani

Calvimontes

2014

Plasma Chem Plasma Process

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The aim of this study was to evaluate the effect of oxygen plasma treatment on the surface roughness, morphology, chemical surface structure, crystallinity and tensile properties of wool fiber yarn. The wool fibers were treated with oxygen plasma at a different treatment time. The morphological surface characterization of wool fibers was realized at sub-micro scale by means of high-resolution scandisk confocal microscopy and scanning electron microscopy. The chemical structure of untreated and plasma treated wool fiber surface was analyzed by Attenuated Total Reflectance Fourier Transform Infrared spectrometry. In addition, the percentage of crystallinity and the size of the crystals were investigated using an X-ray diffractometer. The results showed that oxygen plasma treatment leads to the removal of surface lipids and oxidizes the cysteine in the exocuticle and increases the surface roughness.

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Antimicrobial and physical properties of woolen fabrics cured with citric acid and chitosan

Cited by 108 publications

References 21 publications

Modification of chitosan films with environmentally benign reagents for increased water resistance

Modification of chitosan films with environmentally benign reagents for increased water resistance

UV Protection and Antibacterial Treatment of Wool using Green Silver Nanoparticles

Effects of Oxygen Plasma Treatment on the Physical and Chemical Properties of Wool Fiber Surface

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