Self-Cleaning Keratins

Daoud, Walid A.; Leung, Sze Kar; Tung, Wing Sze; Xin, John Haozhong; Cheuk, Kevin Ka Leung; Qi, Kaihong

doi:10.1021/cm702661k

Cited by 130 publications

(72 citation statements)

References 17 publications

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“…In one example, wool fibres are pretreated with succinic anhydride under mild conditions and then treated with the anatase TiO 2 nanosol by a simple coating process. 8 During this process, additional carboxylic groups are introduced on wool fibre surface by acylation, which result in enhanced bonding between TiO 2 particles and the modified wool fibres 8 due to the compatibility between the anatase TiO 2 sols and wool fibres; 9 Wool fabrics are reported to be treated with citric acid as the cross-linking agent and bonded either with different concentrations of nano TiO 2 to improve its photostability 10 or with TiO 2 /Ag nanocomposites to improve self-cleaning properties. 11 The surfaces of nanoparticles are frequently modified by using chemical or physical modification.…”

Section: ·-mentioning

confidence: 99%

Functional Modification with TiO₂ Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Zhang

Yan

Mao

2014

Ind. Eng. Chem. Res.

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ABSTRACT:Wool fibres are treated with titanate tetrabutyl in the presence of C. I. Reactive Blue 69 dye in one-pot process under hydrothermal conditions. The structural changes of wool fibres before and after treatments as well as the remaining particles are characterized by small-spot Micro X-ray fluorescence (µ-XRF), field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray photoelectron spectroscopy (XPS), thermal gravimetric analysis (TGA), and differential scanning calorimetry (DSC) techniques. The properties of percentage of exhaustion, K/S value, colour fastness to light, tension, photocatalytic activity, and diffuse reflectance spectrum (DRS) are also investigated. The experimental results indicate that after treatment with titanate tetrabutyl and C. I. Reactive Blue 69, wool fibres are evenly immobilized with a thin layer of anatase phase TiO 2 nanoparticles with an average grain size of less than 10 nm. The TiO 2 nanocrystals are synthesized and simultaneously grafted onto wool fibres via the C-Ti 4+ , S-Ti 4+ (Ti 2+ ), and N-Ti 4+ bonds. The thermal stability of wool fibres changes a little. The capability of wool fibres to protect against ultraviolet radiation is improved. The tensile properties decrease to some degree. The photocatalytic activity to decolourize methylene blue dye is endowed. A high degree of percentage of exhaustion and K/S value are obtained by adding a certain amount of acetic acid in the precursor solution, which can well be matched with the custom dip dyeing technique.

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Section: ·-mentioning

confidence: 99%

Functional Modification with TiO₂ Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Zhang

Yan

Mao

2014

Ind. Eng. Chem. Res.

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“…[8] Then interfacial condensation reactions occurred between the reactive groups present on the wool surface and silanols which formed a covalent bond, shown later in the FTIR analysis. In addition, the reaction among silanols occurred; however, not all of the silanols dehydrated in the reaction and some of them still existed on the film surface, which would induce polymerization to form grafted silica layer.…”

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confidence: 93%

Fabrication of Fast‐Absorbing and Quick‐Drying Wool Fabrics with Good Washing Durability

et al. 2010

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Recently, great efforts have been put towards developing smart textiles with desired performance and functionality, which has significance in constructing human second skin for the protection and appearance of our body.[1] Nanotechnology can extend new functions of textiles while maintaining their look and feel, showing great potential to revolutionize the medical, military, domestic, sports and clothing textiles.[2] However, previous studies mainly focused on integrating nanoparticles into textiles to gain new functionality, such as antimicrobial properties, fire retardancy, UV protection, self cleaning, sensing and human biomonitoring.[3] In addition to these excellent functionalities, clothing comfort is a fundamental and universal need for their wearer. Development of textiles with good water absorption and quick drying ability has great importance for improving clothing thermophysiological comfort and wearing performance by adjusting the transport of heat and moisture through a fabric, which was usually achieved using synthetic fibers.[4]Wool, one of the best natural insulating fibers, has an inherent deficiency in heat and moisture comfort because of the presence of a hydrophobic fatty layer that surrounds each fiber.[5] We have already developed an effective method to obtain superhydrophilic wool fabric by coating silica nanoparticles on the surface of wool, changing both surface energy and roughness of wool fabric.[6] Thanks to the silica layer's chemical stability and optical transparence, the superhydrophilic property is environment stable while the color and morphology of pristine wool fabric is unaffected. However, washing fastness is a problem because the coalesce force between the fiber and the silica nanoparticles is weak and only meets the need of dry cleaning. Although wool clothes are traditionally washed by dry cleaning, machine-washable wool clothes are a growing trend because they avoid the use of environmentally hazardous dry-cleaning solvents, and make washing easier and more convenient. Developing machine-washable wool textile and maintaining new functions endowed by nanoparticles is an important goal in the research area of the wool textile industry. There is still a great challenge to graft functional inorganic nanoparticles on the surface of wool fibers by a durable coalesce force. Therefore, developing an effective approach to enhance the coalesce force between nanoparticles and wool fibers has great significance both in scientific and real applications.We adopted a simple and effective method to functionalize reactive monolayer on wool fiber surface by chemical bonding and then graft ultrathin silica nanoparticles layer by an in situ growth method. Among the various materials used for fabrication of reactive monolayer, alkylsilane is promising for practical applications because of its marked mechanical and chemical stability, which is attributed to the strong immobilization through siloxane bonding.[7] Furthermore, the in situ growth process in this work is an effective strategy to in...

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“…Among the diverse photocatalytic technologies, self-cleaning textiles with nano-photocatalyst coatings have attracted incessant and intensive attention in recent years due to their potential applications in a large scale to make human livings more convenient [1][2][3][4]. Comparing with hundreds of new photocatalyst materials, such as BiVO 4 [5], Fe 2 O 3 [6], ZnO [7], WO 3 [8], TiO 2 has been preferentially applied in photocatalytic degradation of organic contaminants and self-cleaning surface because of its highly oxidative power, photostability, and nontoxicity [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic self-cleaning cotton fabrics with platinum (IV) chloride modified TiO2 and N-TiO2 coatings

Long

Zheng

Tan

et al. 2016

Applied Surface Science

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Self-Cleaning Keratins

Cited by 130 publications

References 17 publications

Functional Modification with TiO₂ Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Functional Modification with TiO₂ Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Fabrication of Fast‐Absorbing and Quick‐Drying Wool Fabrics with Good Washing Durability

Photocatalytic self-cleaning cotton fabrics with platinum (IV) chloride modified TiO2 and N-TiO2 coatings

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Self-Cleaning Keratins

Cited by 130 publications

References 17 publications

Functional Modification with TiO2 Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Functional Modification with TiO2 Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Fabrication of Fast‐Absorbing and Quick‐Drying Wool Fabrics with Good Washing Durability

Photocatalytic self-cleaning cotton fabrics with platinum (IV) chloride modified TiO2 and N-TiO2 coatings

Contact Info

Product

Resources

About

Functional Modification with TiO₂ Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process

Functional Modification with TiO₂ Nanoparticles and Simultaneously Dyeing of Wool Fibers in a One-Pot Hydrothermal Process