Photochromic cotton fabric based on microcapsule technology with anti-fouling properties

He, Zhichao; Bao, Bingwei; Fan, Jie; Wang, Wei; Yu, Dan

doi:10.1016/j.colsurfa.2020.124661

Cited by 35 publications

(19 citation statements)

References 34 publications

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“…As we know, it is the first report for photochromic polyamide material with SP as molecular component. Moreover, the present results display that photoresponse fatigue resistance of SP-modified PA6 is better than spiropyran-containing fluorinated polyacrylate [ 18 ], spiropyran enantiomeric glutamate gels [ 24 ] and photochromic cotton fabric based on microcapsule coating [ 38 ].…”

Section: Resultsmentioning

confidence: 99%

Photochromic Polyamide 6 Based on Spiropyran Synthesized via Hydrolyzed Ring-Opening Polymerization

et al. 2021

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We report photochromic polyamide 6 (PA6) which was synthesized by hydrolyzed ring-opening polymerization of ε-caprolactam with spiropyran (SP) embedded in the polymer chains. It indicated that crystallinity degree of the resulting copolymers was decreased since only PA6 segments can crystallize with increasing content of SP modifier. Meanwhile, toughness of photochromic PA6 was decreased. The photochromic property analysis indicated that the sample with more flexibility and more content of SP was more sensitive to UV light at the beginning of irradiation than other samples and its color after being irradiated for 1 min tended to reddish. Investigation revealed that the UV-vis absorbance of SP-PA6-3 had negligible decay after 10 cycles, which indicated SP-modified PA6 possessed excellent photoresponse reversibility and fatigue resistance.

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Section: Resultsmentioning

confidence: 99%

Photochromic Polyamide 6 Based on Spiropyran Synthesized via Hydrolyzed Ring-Opening Polymerization

et al. 2021

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“…In other technical textiles, microencapsulation has been used to achieve specific functionalities, such as improved sound absorption [53], superhydrophobicity [54], antifouling [55] and enzymatic bio-sensing [56].…”

Section: Microcapsules In Functional Textile Productsmentioning

confidence: 99%

Microencapsulation for Functional Textile Coatings with Emphasis on Biodegradability—A Systematic Review

2021

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The review provides an overview of research findings on microencapsulation for functional textile coatings. Methods for the preparation of microcapsules in textiles include in situ and interfacial polymerization, simple and complex coacervation, molecular inclusion and solvent evaporation from emulsions. Binders play a crucial role in coating formulations. Acrylic and polyurethane binders are commonly used in textile finishing, while organic acids and catalysts can be used for chemical grafting as crosslinkers between microcapsules and cotton fibres. Most of the conventional coating processes can be used for microcapsule-containing coatings, provided that the properties of the microcapsules are appropriate. There are standardised test methods available to evaluate the characteristics and washfastness of coated textiles. Among the functional textiles, the field of environmentally friendly biodegradable textiles with microcapsules is still at an early stage of development. So far, some physicochemical and physical microencapsulation methods using natural polymers or biodegradable synthetic polymers have been applied to produce environmentally friendly antimicrobial, anti-inflammatory or fragranced textiles. Standardised test methods for evaluating the biodegradability of textile materials are available. The stability of biodegradable microcapsules and the durability of coatings during the use and care of textiles still present several challenges that offer many opportunities for further research.

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“…Thus, we saw a potential interest for textile applications to open perspectives towards the development of UV protective and sensing clothes that can find considerable implications in the safety and military industries [7,9,10]. Disparate examples of photochromic fabrics were obtained by using several organic dyes, such as spirooxazines, spiropyrans and naphthopyrans, employed with different kinds of integration processes [11][12][13][14][15][16][17][18]. Traditional and innovative dyeing techniques based on supercritical CO 2 were used for the production of photochromic textiles by using organic molecules [16,17].…”

Section: Introductionmentioning

confidence: 99%

“…Despite this, organic materials are at the same time largely affected by external environmental conditions such as oxygen and pH, hence, microencapsulation processes are usually required to ensure long-time service [13,15,18]. Nevertheless, embedding photochromic dyes into a rigid polymeric matrix often reduces the molecular mobility and therefore slows down the reversible modification responsible for the photochromism in organic molecules.…”

Section: Introductionmentioning

confidence: 99%

Photochromic Textiles Based upon Aqueous Blends of Oxygen-Deficient WO3-x and TiO2 Nanocrystals

et al. 2022

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With the main objective being to develop photochromic smart textiles, in this paper, we studied the photochromic behavior of WO3-x nanocrystals (NCs) cooperatively interacting with variable amounts of TiO2 NCs. We tested several blends of WO3-x:TiO2 NCs, admixed in different compositions (relative molar ratio of 4:0, 3:1, 2:2, 1:3, 0:4) and electrostatically interfacing because of opposite values of Z-potential, for photo-induced chromogenic textiles. We further monitored the photochromic sensitivity of NC-impregnated textiles after exposure to a few solvents (i.e., methanol, ethanol, and isopropanol) or when over-coated with different polymeric matrices such as natural cellulose or ionic conductive Nafion. The optimization of the compositions of the WO3-x:TiO2 blends embedded in polymeric matrices, allowed the nanostructured photochromic textiles to show rapid and tunable coloration (<5 min) and bleaching kinetics (~5 in at 75 °C or 6 h at room temperature) along with good recovery and cycling stability. This study features a simple strategy for the widespread application of WO3-x:TiO2-based photochromic smart textiles.

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Photochromic cotton fabric based on microcapsule technology with anti-fouling properties

Cited by 35 publications

References 34 publications

Photochromic Polyamide 6 Based on Spiropyran Synthesized via Hydrolyzed Ring-Opening Polymerization

Photochromic Polyamide 6 Based on Spiropyran Synthesized via Hydrolyzed Ring-Opening Polymerization

Microencapsulation for Functional Textile Coatings with Emphasis on Biodegradability—A Systematic Review

Photochromic Textiles Based upon Aqueous Blends of Oxygen-Deficient WO3-x and TiO2 Nanocrystals

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