Physical and chemical investigations on natural dyes

Acquaviva, S.; D’Anna, E.; Giorgi, Maria Luisa De; Patria, Andrea Della; Baraldi, Pietro

doi:10.1007/s00339-010-5676-2

Cited by 6 publications

(2 citation statements)

References 13 publications

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“…51 The CIELAB color-difference formula is useful and commonly employed in the cultural heritage research field. [52][53][54][55][56][57] However, in this case, CIEDE2000 colordifference formula was chosen as a standard following the latest recommendation made by CIE and ISO. 49,58,59 In fact, CIEDE2000 was initially recommended for a set of "reference conditions" (e.g., uniform samples with CIELAB color differences below 5.0 units) that are different from the current ones.…”

Section: Methodsmentioning

confidence: 99%

Colorimetric evaluation of 3D printing polymers exposed to accelerated aging for Cultural Heritage applications

Higueras

Montero

Medina

2023

Color Research & Application

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3D printing has become a widespread technology that allows the creation of physical objects from different materials. The conservation and restoration of Cultural Heritage field has recently introduced this technology as a complement to its traditional methods. However, the main concern in the application of 3D printing in this context is the long‐term behavior of the materials used. The key objective of this research was the identification of the suitability of 3D printing filaments for conservation purposes. The methodology followed in this study consisted of a selection of 13 3D printing filaments for Fused Deposition Modeling (FDM) technologies, which were tested and exposed to an accelerated aging procedure. In order to classify and recommend the materials that present better results, the properties of color, the glossiness, the pH and the Volatile Organic Compounds emission were investigated. This paper collects the results of the analyses carried out, focusing discussion on the colorimetric behavior. The results demonstrate the usefulness of some of the materials studied, highlighting the performance of EP as one of the most stable and reliable materials while Flex is one of the most changeable ones in the Cultural Heritage context. Even though this research provides an overview of the aging of the materials studied, further analyses should be performed to understand the chemical composition and its behavior when exposed to a long‐lasting aging process.

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Section: Methodsmentioning

confidence: 99%

Colorimetric evaluation of 3D printing polymers exposed to accelerated aging for Cultural Heritage applications

Higueras

Montero

Medina

2023

Color Research & Application

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“…But with the Perkin's discovery of mauvine, the industry started using synthetic dyes. It has been found with the time that synthetic colours not only often are harmful to health but also result in the cause of pollution for eco system (Acquaviva et al 2010;Zheng et al 2011). These drawbacks about using synthetic dyes due to involvement of highly toxic and carcinogenic effluents in waste water during processing has expelled them for dye-housed (Haji 2010).…”

Section: Eco-friendly Dyeing Of Gamma Raymentioning

confidence: 98%

Eco-Friendly Dyeing of Gamma Ray Induced Cotton Using Natural Quercetin Extracted from Acacia Bark(A. nilotica)

Gulzar

Adeel

Hanif

et al. 2015

Journal of Natural Fibers

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For the present study Quercetin has been extracted and applied onto the gamma irradiated cotton. Fabrics and powder have been exposed to different absorbed doses and dyeing has been performed at various parameters. It is observed that 20 kGy is the optimum absorbed dose for surface modification of cotton. It has been also found that good colour strength has been obtained at 60 • C by dyeing optimal fabric for 40 min using dye bath of pH6 keeping liquor concentration of 1:30 and electrolyte concentration of 1 g. 7% of tannic acid as pre-mordant and 5% of Copper sulphate as post mordant was optimum conditions to get good fastness properties according to ISO standard methods. Quercetin from acacia bark under ionizing radiation can safely be used as possible substitute to reddish-brown synthetic dyes.

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Packaging ink microcapsules with high stability and biocompatibility based on natural dye gardenia blue

Luo

2023

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Physical and chemical investigations on natural dyes

Cited by 6 publications

References 13 publications

Colorimetric evaluation of 3D printing polymers exposed to accelerated aging for Cultural Heritage applications

Colorimetric evaluation of 3D printing polymers exposed to accelerated aging for Cultural Heritage applications

Eco-Friendly Dyeing of Gamma Ray Induced Cotton Using Natural Quercetin Extracted from Acacia Bark(A. nilotica)

Packaging ink microcapsules with high stability and biocompatibility based on natural dye gardenia blue

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