Modeling the deposition of fluorescent whitening agents on cotton fabrics

Bueno, Laura; Amador, Carlos; Bakalis, Serafim

doi:10.1002/aic.16001

Cited by 6 publications

(3 citation statements)

References 35 publications

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“…Meanwhile, the whiteness also saw a sharp decrease from 80+ to 60+, particularly for the coated samples. This may be due to the loss of fluorescent whitening agent after washing because they are often used for textiles to improve the whiteness [29,30].…”

Section: Hand Feel Measurementmentioning

confidence: 99%

Development of Durable Antibacterial Textile Fabrics for Potential Application in Healthcare Environment

et al. 2020

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Recently, efforts at development of functional textiles with antibacterial effect have accelerated, the purpose being to provide protection against airborne bio-particles and micro-organisms. Growth of microbes on surface of textile materials can be inhibited by biocidal approach and biostatic approach. This paper describes the development of a healthcare textile with durable antibacterial properties by optimizing the conventional and commercialized antimicrobial agent polybiguanide derivative—poly(hexamethylenebiguanide) (PHMB). Pad-dry-cure method was used to coat PHMB on cotton fabrics. The durability to simulated healthcare laundering of the fabric samples was evaluated in detail. Specifically, effects of detergent and washing cycles were examined. It was found that the optimum finishing condition can impart to the fabrics excellent durability for simulated healthcare washing. The fabric samples showed 100% bactericidal effect after 52 washing cycles, and 104 washings slightly reduced the bactericidal activity. Nevertheless, both simulated healthcare washing and coating treatment were found to have slightly negative influence on the hand feel and tearing strength properties of cotton fabrics.

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Section: Hand Feel Measurementmentioning

confidence: 99%

Development of Durable Antibacterial Textile Fabrics for Potential Application in Healthcare Environment

et al. 2020

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“…Moreover, they are also present in domestic wastewaters. The bleaching residual effluents can be more or less harmful to the environment, depending on the chemical structure of the selected OB and on the amount of salts used to improve OBs sorption during the whitening process [ 2 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Respirometric Study of Optical Brighteners in Textile Wastewater

et al. 2019

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Optical brighteners (OBs) are colorless fluorescent dyes, widely used in industry to improve whiteness in materials. Nearly 80% of all OBs in the market are derivatives of stilbene. They absorb the near-ultraviolet light and re-emit most of it in the blue range as visible fluorescence. OBs are commonly applied on textiles, detergents, paper and plastic products, among others. OBs have a low degradation ratio. In biological plants, they can only be partially removed by adsorption into the sludge and a tertiary treatment could be required to fully remove them. Part of them may persist and can be found in river and lake waters. The current work aims to evaluate the effect of the OBs in the bacterial activity of biological wastewater treatment plants. The influence of two commercial OBs (Goldblanc BHA and Leucophor PC) on respiration rate was monitored by means of a semi-continuous electrolytic respirometer, in order to obtain information related to the growth of the biomass and the degradation of the substrate. Their acute toxicity was also determined. It was concluded that the OB effect on bacteria population is variable depending on its chemical structure. Unlike the former, the Leucophor-PC brightener had an impact on the respirometric rate.

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“…Dyes are commercially available and have been used in many applications, particularly in spectroscopy and medicine. Fluorescent dyes are mainly used in life sciences for non-destructive tracking or analysis of biological molecules [37,38], but they find a wide use in the industry for textile dyeing and as optical brighteners in laundry detergents [39,40], advanced cosmetic formulations [41], safety equipment and clothing, fine arts and design (posters and paintings) [42], synergists for insecticides, and experimental drugs [43]. Organic light-emitting diodes (OLEDs) and solar panels that collect more light (wavelengths) also have a more commercially available use nowadays.…”

Section: Introductionmentioning

confidence: 99%

White-Light Emission of Dye-Doped Polymer Submicronic Fibers Produced by Electrospinning

2018

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Lighting and display technologies are evolving at tremendous rates nowadays; new device architectures based on new, microscopic building blocks are being developed. Besides high light-emission efficiencies, qualities including low cost, low environmental impact, flexibility, or lightweightness are sought for developing new types of devices. Electrospun polymer fibers represent an interesting type of such microscopic structures that can be employed in developing new functionalities. White-light-emitting fiber mats were prepared by the electrospinning of different dye-doped polymer solutions. Two approaches were used in order to obtain white-light emissions: the overlapping of single-dye-doped electrospun fiber mats, and the electrospinning of mixtures of different ratios of single-dye-doped polymer solutions. Scanning electron microscopy (SEM) was used to investigate the morphologies of the electrospun fibers with diameters ranging between 300 nm and 1 µm. Optical absorption and photoluminescence (PL) were evaluated for single-dye-doped submicronic fiber mats, for overlapping mats, and for fiber mats obtained from different compositions of mixtures. Depending on the ratios of the mixtures of different dyes, the luminance was balanced between blue and red emissions. Commission Internationale de L'Eclairage (CIE) measurements depict this fine-tuning of the colors' intensities, and the right composition for white-light emission of the submicronic fiber mats was found.

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Modeling the deposition of fluorescent whitening agents on cotton fabrics

Cited by 6 publications

References 35 publications

Development of Durable Antibacterial Textile Fabrics for Potential Application in Healthcare Environment

Development of Durable Antibacterial Textile Fabrics for Potential Application in Healthcare Environment

Respirometric Study of Optical Brighteners in Textile Wastewater

White-Light Emission of Dye-Doped Polymer Submicronic Fibers Produced by Electrospinning

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