A study of the influence of structure on the effectiveness of chitosan as an anti-felting treatment for wool

Roberts, George A. F.; Wood, Frances A.

doi:10.1016/s0168-1656(01)00316-9

Cited by 44 publications

(15 citation statements)

References 3 publications

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“…The existence of scales on wool fiber surface not only affects wettability and dyeability but also makes wool fabric felting shrinkage under hot/wet and mechanical actions 7, 8. Nowadays, the method for removing scales mainly includes chlorination9–11 and enzyme treatment,12–14 both of which could pollute environment severely due to a large amount of waste water and chemicals. With the increasing consciousness of environmental protection and economical restrictions imposed on textile industry, the wet procedure has to be replaced by environmentally favorable alternatives in wool treatment process 15…”

Section: Introductionmentioning

confidence: 99%

Study on wettability improvement and its uniformity of wool fabric treated by atmospheric pressure plasma jet

Wang

Qiu

2011

J of Applied Polymer Sci

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The influence of processing parameters on wettability improvement and its uniformity of wool fabric treated by atmospheric pressure plasma jet (APPJ) was explored. A woven wool fabric was treated by APPJ under various treatment conditions such as different treatment time, different oxygen flow rate, and different jet-to-substrate distance. The water absorption time of wool fabric was measured to determine wettability improvement. The diffusion photo of water droplet on wool fabric surface was taken by digital camera to reflect wettability uniformity. After APPJ treatment, SEM observation showed that the scales on the wool fiber surface directly facing plasma jet pores were destroyed than those on the other fiber surface. XPS analysis showed that the carbon concentration substantially decreased. The concentration of oxygen and nitrogen significantly increased and but the concentration of sulfur and silicon did not obviously changed. With the addition of oxygen gas, more polar groups such as hydroxyl and carboxyl produced on wool fiber surface. The water absorption time of wool fabric greatly reduced indicating wettability improvement. The diffusion of water droplet on wool fabric surface was also larger and more homogenous suggesting uniform plasma treatment. It was concluded that the wettability improvement and its uniformity of the treated wool fabric increased and then decreased with the increasing oxygen flow rate and jet-tosubstrate distance, and increased with the increasing treatment time. Therefore to achieve reasonable wettability and its uniformity of the wool fabric treated by APPJ, plasma treatment conditions have to be carefully chosen.

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Section: Introductionmentioning

confidence: 99%

Study on wettability improvement and its uniformity of wool fabric treated by atmospheric pressure plasma jet

Wang

Qiu

2011

J of Applied Polymer Sci

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“…[8][9][10] Sol-gel processes, based on the hydrolysis and condensation of metal alkoxide compounds, have various technical applications such as the preparation of special glass, ceramics, and coatings. 5,6,[11][12][13] Treatment of textile materials with sol-gel process has been studied for application of hydrophilic and hydrophobic coatings on fabrics, for enhancing the wash fastness of direct dyes, for UV blocking of cotton with titanium alcosol, and for application of an antibacterial photocatalyst. 1,14,15 Among the various methods of the antifelting finishing on the wool explored up to now, the sol-gel process is a new direction in textile field, especially on wool finishing.…”

Section: Introductionmentioning

confidence: 99%

Polyurethane modified with 3‐aminopropyltriethoxysilane as wool antifelting agent

Yan

2008

J of Applied Polymer Sci

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A wool antifelting agent containing polyurethane modified with 3-aminopropyltriethoxysilane (APTES) was synthesized. Firstly an isocyanate (À ÀNCO) group ended prepolymer was gained by a hydrogen shift reaction between isophorone diisocyanate (IPDI) and poly (propylene oxide triol) (PPT), and then NCO-group of the prepolymer was blocked by 3-aminopropyltriethoxysilane to form a precursor PPT-[Si(OEt) 3 ] 3 . After that a sol of the precursor was prepared for an antifelting agent. During heating the sol gelled and formed inorganic-organic hybrid film that was characterized by using FTIR and TGA. And then the wool fabric samples were treated with sol by pad-dry-cure process at different curing temperature (120, 140, and 1608C). The antifelting effects of different curing temperatures were compared. The results indicated that the new agent could endow a better antifelting effect with the low curing temperature at 1208C and 3 min.

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“…Some antibacterial activities have been described with chitosan and modified chitosan derivatives. [1][2][3][4][5] However, chitosan shows its biological activity only in acidic medium because of its poor solubility above pH 6.5. Thus, water soluble chitosan derivatives which are soluble in both acid and basic physiologic circumstances might be good candidates for a polycationic biocide.…”

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confidence: 99%

Synthesis and Characterization of Chitosan Biguanidine Hydrochloride under Microwave Irradiation

Zhao

Yi-zhen³

2009

Polym. J.

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Chitosan biguanidine hydrochloride was synthesized by reacting chitosan with dicyandiamide under microwave irradiation. The influence of reaction temperature, reaction solvent and microwave heating time was studied, and optimal conditions were identified. The representative microwave synthesized chitosan biguanidine hydrochloride was characterized by Fourier transform infrared spectroscopy, scanning electron microscopy and X-ray diffraction measurement, taking chitosan as a reference. The solubility pH for the chitosan biguanidine hydrochloride with different substitution degrees was monitored. The antimicrobial activities of chitosan biguanidine hydrochloride were measured by means of the minimal inhibition concentration (MIC). In vitro antimicrobial activity of guanidinylated chitosans with different substitution degrees were evaluated against staphylococcus aureus, bacillus subtilis, escherichia coli and pseudomonas aeruginosa. The results show that the microwave irradiation method can increase the reaction rate by twelve times over the conventional method. Chitosan biguanidine hydrochloride are effective of bacteriostasis, compared with chitosan, guanidinylated chitosan had much better antibacterial activity. The antibacterial activity of chitosan biguanidine hydrochloride derivative enhanced with increasing substitution degrees of guanidinylated chitosan.

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A study of the influence of structure on the effectiveness of chitosan as an anti-felting treatment for wool

Cited by 44 publications

References 3 publications

Study on wettability improvement and its uniformity of wool fabric treated by atmospheric pressure plasma jet

Study on wettability improvement and its uniformity of wool fabric treated by atmospheric pressure plasma jet

Polyurethane modified with 3‐aminopropyltriethoxysilane as wool antifelting agent

Synthesis and Characterization of Chitosan Biguanidine Hydrochloride under Microwave Irradiation

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