Effect of Crosslinking Agents on Water Repellency of Cotton Fabrics Treated with Fluorocarbon Resin

Sato, Yukihiro; Wakida, Tomiji; Tokino, Seiji; Niu, Shouhua; Ueda, Mitsuo; Mizushima, Haruo; Takekoshi, Shoji

doi:10.1177/004051759406400602

Cited by 41 publications

(19 citation statements)

References 4 publications

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“…Ideal water repellent cotton fabrics are hydrophobic on the fiber surfaces to resist water, yet porous to allow moisture transport for comfort. Efforts to reduce the hydrophilicity of cotton have involved surface modification using hydrophobic compounds, such as fluorocarbons (Jiang et al 2005;McCord et al 2003;Sato et al 1994), silicones (Lee et al 2005;Yuen et al 2005) and hydrocarbons (Sawatari et al 1998). These technologies have varying effectiveness and durability in achieving water repellent cotton fabrics although are limited by their sustainability and environmental concerns and cost.…”

Section: Introductionmentioning

confidence: 99%

Surface modification of cellulose with plant triglycerides for hydrophobicity

2007

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Hydrophobic cotton was achieved by surface modification of the cellulose with triglycerides from several plant oils including soybean, rapeseed, olive and coconut oils. These oils were delivered to the cellulose substrates in homogeneous solutions of ethanol or acetone as well as aqueous emulsions. Surface modification was facilitated by solvent evaporation followed by heating between 110 and 120 8C for 60 min. All oils, except for coconut, produced hydrophobic and less water-absorbing cotton, supporting the desirable role of higher unsaturation in the fatty acids to achieve crosslinked network. The most hydrophobic surfaces were obtained by the reaction with 1% soybean oil in acetone. On both bleached and scoured cotton, a water contact angle of 808 and water absorption value of 0.82 mL/mg were achieved. The acquired hydrophobicity was not only retained after water washing but also improved with subsequent exposures to elevated temperatures. The surface tension of scoured cotton cellulose was lowered from 63.81 mJ/m 2 to 25.74 mJ/m 2 when modified by soybean oil delivered in acetone, which is lower than that of poly(ethylene terephthalate). An aqueous emulsion of soybean oil also rendered the scoured cotton hydrophobic, which shows promise for a green chemistry and bio-based approach to achieve water repellency on cellulosic materials.

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Section: Introductionmentioning

confidence: 99%

Surface modification of cellulose with plant triglycerides for hydrophobicity

2007

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“…Contact angle obviously decreased by washing and recovered by subsequent heat treatment, especially at temperature over 80". Also, we reported the same water repellency on the cotton and polyester fabrics treated with fluorocarbon resin [4,5,9]. Therefore, it seems that the behavior by the fluorocarbon resin treatment takes place independent of the fiber substrate.…”

Section: Tablementioning

confidence: 57%

“…Above explanation is all speculation. Detail of the phenomenon is not clear at present [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Effect of Washing and Subsequent Heat Treatment on Surface Characteristic of Glass Fabric Treated with Fluorocarbon Resin

Lee

Nishi²,

Miyazaki³

et al. 2005

Sen-i Gakkaishi

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: It is well known that water repellency of the fabric finished with perfluorocarbon resin lowers by washing and recovers by subsequent heat treatment. Detail of the behavior of the water repellency is not always clear at present. In this article, glass fiber fabric which consists of a three dimensional silicate component was treated with commercial fluorocarbon resins, Asahi Guard AG-7000 and AG-925 (copolymer of fluoroalkyl acrylate and alkyl acrylate). Then, the fabric was washed and subsequently heat treated varying the temperature. After the processing, the water and oil repellencies were evaluated. The water and oil repellencies decreased by the washing and recovered by following heat treatment. ESCA measurement was carried out to investigate the surface chemical composition of the treated fiber. The F1s intensity of the treated fabric decreased by the washing and recovered by the subsequent heat treatment. On the other hand, the O1s intensity increased by the washing and decreased by following heat treatment. From the results, it is clear that change of the water and oil repellencies of the glass fabric treated with fluorocarbon resin causes by the washing and subsequent heat treatment. We considered that these behaviors of the treated fabric attributed greatly to the water bonded or clustered on the fabric surface during the washing and following heat treatment.

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“…Another characterization was carried out on cotton fabrics by XPS, detecting the surface of samples by a survey scan and a high resolution scan of the C1s orbital [17]. Even in this case the presence of the finishing agent is revealed by the detection of F and Si on the surface of Fluorolink and MEMO treated samples respectively, as reported in Table 2.…”

Section: Xps Resultsmentioning

confidence: 99%