Superhydrophobicity of cotton fabrics treated with silica nanoparticles and water-repellent agent

Bae, Geun Yeol; Min, Byung Gil; Jeong, Young Gyu; Lee, Sang Cheol; Jang, Jin Ho; Koo, Gwang Hoe

doi:10.1016/j.jcis.2009.04.066

Cited by 241 publications

(108 citation statements)

References 31 publications

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“…For cases when water repellency is important, this property is not desired (Bae et al 2009). Water repellent fabrics are needed in e.g., rainwear, self-cleaning coatings, anti-fouling or anti-corrosion coatings, and bandages (Abidi and Hequet 2004;Sahin 1996;Shi et al 2013;Singh 1987).…”

Section: Introductionmentioning

confidence: 99%

“…Water repellent fabrics are needed in e.g., rainwear, self-cleaning coatings, anti-fouling or anti-corrosion coatings, and bandages (Abidi and Hequet 2004;Sahin 1996;Shi et al 2013;Singh 1987). Therefore, the hydrophobization of cellulose fibers has recently attracted considerable attentions (Bae et al 2009;Ivanova and Zaretskaya 2010;Shi et al 2013;Wi et al 2009). …”

Section: Introductionmentioning

confidence: 99%

“…The alternative way is relatively complex but does not affect the comfort of the textiles. In order to build up a hierarchical structure and increase the surface roughness, nano/micro-scale texture is first created on the surface of the textile fiber by introducing some nano-scale particles like SiO 2 , TiO 2 and ZnO (Bae et al 2009). Afterwards, some waxy materials like fluorinated silanes are added to make the textile waterproof (Shi et al 2013).…”

Section: Introductionmentioning

confidence: 99%

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Water repellency improvement of cellulosic textile fibers by betulin and a betulin-based copolymer

Huang

2018

Cellulose

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Betulin is a naturally abundant and hydrophobic compound in the outer bark of birch and can readily be obtained by solvent extraction. Here, solutions of betulin were used to treat cotton fabrics and improve their water repellency. Cotton fabric impregnated in a solution of betulin in ethanol showed a contact angle for water of approximately 153°and reached a water repellency score of 70 according to a standard water repellency test method. A betulin-terephthaloyl chloride (TPC) copolymer was synthesized. Both betulin and betulin-TPC copolymer were characterized by nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy. The copolymer was characterized by size exclusion chromatography and differential scanning calorimetry. When impregnated with a solution of betulin-TPC copolymer in tetrahydrofuran, a cotton fabric showed a water contact angle of 151°a nd also reached a water repellency score of 70. Films based on betulin and betulin-TPC copolymer were prepared and coated onto the surface of the fabrics by compression molding. These coated fabrics showed water contact angles of 123°and 104°respectively and each reached a water repellency score of 80.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Water repellency improvement of cellulosic textile fibers by betulin and a betulin-based copolymer

Huang

2018

Cellulose

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“…These thin mesoporous coatings have high structural homogeneity and their adhesion can be tailored to different substrates [24,25]. Sol-gel based hydrophobic and water-repellent coatings have been investigated on different plant based materials such as wood [26,27] and cellulosic based materials [28][29][30]. Wood and cellulosic fibres modified with sol-gel material showed significant reduction in flammability and enhanced fireresistance properties.…”

Section: Introductionmentioning

confidence: 99%

Modification of hemp shiv properties using water-repellent sol–gel coatings

Hussain

Calabria-Holley

Jiang

et al. 2018

J Sol-Gel Sci Technol

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For the first time, the hydrophilicity of hemp shiv was modified without the compromise of its hygroscopic properties. This research focused on the use of sol-gel method in preparation of coatings on the natural plant material, hemp shiv, that has growing potential in the construction industry as a thermal insulator. The sol-gel coatings were produced by cohydrolysis and polycondensation of tetraethyl orthosilicate (TEOS) using an acidic catalyst. Methyltriethoxysilane (MTES) was added as the hydrophobic precursor to provide water resistance to the bio-based material. Scanning electron microscopy (SEM) and focused ion beam (FIB) have been used to determine the morphological changes on the surface as well as within the hemp shiv. It was found that the sol-gel coatings caused a reduction in water uptake but did not strongly influence the moisture sorption behaviour of hemp shiv. Fourier transformed infrared (FTIR) spectroscopy shows that the coating layer on hemp shiv acts a shield, thereby lowering peak intensity in the wavelength range 1200-1800 cm −1 . The sol-gel coating affected pore size distribution and cumulative pore volume of the shiv resulting in tailored porosity. The overall porosity of shiv decreased with a refinement in diameter of the larger pores. Thermal analysis was performed using TGA and stability of coated and uncoated hemp shiv have been evaluated. Hemp shiv modified with sol-gel coating can potentially develop sustainable heat insulating composites with better hygrothermal properties. A novel method for modification of hemp shiv using sol-gel technology. Graphical Abstract• Coating layer acts as a breathable membrane allowing the hemp shiv to retain its hygric characteristics.• Hemp shiv coated with sol-gel monolayer reduces its water absorption capacity by 200%.• The effects of sol-gel coating on surface morphology, thermal stability and porosity of the shiv increase with increase in coating thickness.

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“…Different techniques for producing rough surfaces were developed by imitating nature (biomimetics); however, in textile production most of them cannot be recreated. Only the introduction of nanotechnology processes, such as electrospinning (Hutmacher and Dalton 2011), plasma treatment (Kan et al 2011;Mihailović et al 2011;Patiño et al 2011;Sun and Qiu 2012;Vasiljević et al 2013) and sol-gel technology (Mahltig 2011;Bae et al 2009;Vilčnik et al 2009;Zhu et al 2011;Zhao et al 2010;Simončič et al 2012;Shateri-Khaliladad and Yazdanshenas 2013;Berendjchi et al 2011;Chen et al 2010), have enabled breakthroughs in the creation of superhydrophobic and self-cleaning textiles. In particular, the latter are very popular because the production and application of particles and nanoparticles on a surface make it possible to easily control its roughness.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of superhydrophobic cotton fabrics by a simple chemical modification

et al. 2016

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Hydrophobization of cotton fabrics was carried out with the use of bifunctional polysiloxanes with various contents of functional groups. Polysiloxanes contained in their structure groups capable of bonding to substrates (trialkoxysilyl or glycidyl ones) and fluoroalkyl groups showing surface activity. Two methods of surface modification were compared: (1) a one-step method via the chemical modification of fabrics with solutions of bifunctional polysiloxanes and (2) a two-step method-via preliminary modification of fabrics with silica sol followed by chemical modification with solutions of bifunctional polysiloxanes. The hydrophobicity was determined by measuring the water contact angle by drop profile tensiometry. Changes in the surface topography were examined by scanning electron microscopy. Superhydrophobic fabrics were obtained by a simple one-step method by the chemical modification in solutions of bifunctional polysiloxanes. The fabrics maintained their superhydrophobic properties even after multiple washings. The modification does not cause any changes visible to the naked eye, such as stiffening, color changes or a decrease in mechanical properties.

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Superhydrophobicity of cotton fabrics treated with silica nanoparticles and water-repellent agent

Cited by 241 publications

References 31 publications

Water repellency improvement of cellulosic textile fibers by betulin and a betulin-based copolymer

Water repellency improvement of cellulosic textile fibers by betulin and a betulin-based copolymer

Modification of hemp shiv properties using water-repellent sol–gel coatings

Fabrication of superhydrophobic cotton fabrics by a simple chemical modification

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