Effectiveness of various UV-absorbers on the dyeing of polyester with disperse dyes. Part IV

Tsatsaroni, Efforia; Kehayoglou, A. H.; Eleftheriadis, Ioannis; Kyriazis, L.E

doi:10.1016/s0143-7208(97)00085-5

Cited by 19 publications

(14 citation statements)

References 3 publications

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“…With such materials, the protection can be relatively long‐lived [9,10]. Improvements in the light fastness of textiles dyed with traditional dye classes, such as disperse dyes, have been reported using these products [11,12]. Four commercially available organic UV absorbers ( 6 – 9 ), as listed in Table 2, with chemical structures given in Figure 8, were selected in order to assess the effect of different chemical classes with different UV absorbing characteristics.…”

Section: Resultsmentioning

confidence: 99%

Textile applications of photochromic dyes. Part 3: factors affecting the technical performance of textiles screen‐printed with commercial photochromic dyes

Little¹,

Christie²

2011

Coloration Technology

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The technical performance of five selected commercial photochromic dyes applied by screen-printing on textiles was evaluated using a colour measurement methodology that has previously been established and validated. The results of wash fastness assessments were distinctly unusual. With the selected spirooxazine dyes, the degree of photocoloration increased with initial washing and decreased with subsequent washings, while the naphthopyrans behaved more normally, showing a consistent marginal decrease in photocoloration with repeated washing. An explanation is proposed consistent with scanning electron microscopy examination of the binder film degradation and with the structural differences between the dye classes. The dyes in this application showed limited photostability. The incorporation of ultraviolet absorbers was found to increase photostability only to an extent specific to particular ultraviolet absorber ⁄ dye combinations. However, the presence of the ultraviolet absorber led to a consistent reduction in the degree of photocoloration of the dyes. In contrast, the incorporation of hindered amine light stabilisers significantly enhanced the photostability of the dyes, providing an increase in resistance to photodegradation of up to fivefold.

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Section: Resultsmentioning

confidence: 99%

Textile applications of photochromic dyes. Part 3: factors affecting the technical performance of textiles screen‐printed with commercial photochromic dyes

Little¹,

Christie²

2011

Coloration Technology

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“…UV absorbers operate by shielding from UV light, converting the energy from the irradiation to heat which is harmlessly dissipated through the substrate. Improvements in the light fastness of textiles dyed with traditional dye classes, such as disperse dyes, have been reported using these products . HALS inhibit degradation by scavenging free radical intermediates formed in the photodegradation process.…”

Section: Resultsmentioning

confidence: 99%

Textile applications of commercial photochromic dyes. Part 6: photochromic polypropylene fibres

Little

Christie

2016

Coloration Technology

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Two commercial photochromic dyes, a spirooxazine and a napthopyran, were successfully incorporated into polypropylene fibres by melt extrusion to produce fibres that showed intense photochromism. The technical performance of the photochromic dyes was investigated using a methodological approach that has been established and validated for the dyes applied by screen printing onto textiles in previous publications in this series. These parallel investigations allowed a comparison of the properties of the dyes in polypropylene and screen printed on cotton. The photocolorability of both dyes was found to be significantly higher in polypropylene compared with screen prints on cotton when applied at the same dye concentration. Of particular interest was the observation of positive solvatochromism, providing evidence that the photochromism is due to the colorants in solution in both media. The colour development rates during UV exposure of the dyes applied by screen printing cotton and by extrusion into polypropylene were similar. However, differences were observed in the thermal fading rates after removal of the UV source, in that the spirooxazine dye reverted more slowly in polypropylene, while the reverse was true in the case of the naphthopyran. Both dyes showed better photostability in polypropylene than in screen-printed textiles. A UV absorber and two hindered amine light stabilisers were found significantly to enhance the photostability of the dyes in polypropylene, although the presence of the UV absorber reduced the degree of photocoloration.

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“…Having outlined the mechanisms of photodegradation, it is apparent that to achieve any form of photostabilization of historic textiles and dyes, the retardation or elimination of some photochemical reactions is desirable. A number of approaches to the photostabilization of polymers have been reported over the years (Bourdeau 1988;Carison and Whiles 1975;Coleman and Peacock 1958;Gantz and Sumner 1957;Kuramoto 1990;Lappin 1971;Randy and Rabek 1975;Shlyapintokh 1981;Tsatsaroni et al 1998), all using materials called photodegradation inhibitors, photostabilizers, UV stabilizers or light stabilizers. Whatever the name of these materials, their action is focused on the termination or elimination of the effects of UV radiation on polymers, as the most destructive part of solar radiation.…”

Section: Light Stabilizersmentioning

confidence: 99%

“…Whatever the name of these materials, their action is focused on the termination or elimination of the effects of UV radiation on polymers, as the most destructive part of solar radiation. Some research has been done on using photostabilizers to prevent the fading of primarily synthetic dyes and colourants (Kehayoglou et al 1997;Kitao 1991;Kuramoto 1990;Tsatsaroni et al 1998). There have also been attempts to photostabilize natural organic materials such as wood (Williams 1983), and of course textile fibres such as cotton, silk and especially wool (Becker et al 1989;Carr et al 1985;Cegarra and Ribe 1972;Evans and Waters 1981;Head and Lund 1969;Leaver 1982;Reinert and Thommen 1991;Riedel and Hocker 1996;Walden and Moore 1961;Waters and Evans 1983;Waters and Evans 1980).…”

Section: Light Stabilizersmentioning

confidence: 99%

Photodegradation and photostabilization of historic silks in the museum environment – evaluation of a new conservation treatment.

Koussoulou¹

1999

PIA

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Historic silks Silk is one of the most important textile materials and highly valued as a luxurious and prestige fibre for its rarity, smoothness, gloss and bright colours. It is a natural animal fibre, usually coming from the moth larva Bombyx mori, which can be cultivated. There are also other types of silk fibres, like the Tussah silk, which is also called wild silk, as it cannot be cultivated and therefore is quite rare. The silk taken directly from the coccoon consists of two filaments stuck together and coated with sericin, a natural gum, which during the manufacturing process is dissolved and removed. This leaves two fibres, which are uneven in diameter along their length. Before the introduction of synthetic fibres, silk was often preferred for the preparation of royal clothing, clothing for special occasions, decorative textiles like embroideries, and ecclesiastical and ceremonial garments. Silk's receptiveness to dyeing with natural dyes gives bright and shining colours, which was also an advantage, especially in association with the red dyes which give silk its royal identity. The sweet orange madder red, the delicate glistening safflower pink and the royal and sacred deep red cochineal, are some of the red shades

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Effectiveness of various UV-absorbers on the dyeing of polyester with disperse dyes. Part IV

Cited by 19 publications

References 3 publications

Textile applications of photochromic dyes. Part 3: factors affecting the technical performance of textiles screen‐printed with commercial photochromic dyes

Textile applications of photochromic dyes. Part 3: factors affecting the technical performance of textiles screen‐printed with commercial photochromic dyes

Textile applications of commercial photochromic dyes. Part 6: photochromic polypropylene fibres

Photodegradation and photostabilization of historic silks in the museum environment – evaluation of a new conservation treatment.

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