Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll
| Autor: | Valentín Viqueira, Bàrbara Micó-Vicent, Esther Perales Romero, Jorge Jordán-Núñez |
|---|---|
| Přispěvatelé: | Universidad de Alicante. Departamento de Óptica, Farmacología y Anatomía, Visión y Color |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Chlorophyll
Technology statistical design of experiments 02 engineering and technology 01 natural sciences chemistry.chemical_compound General Materials Science chlorophyll halloysite Biology (General) Instrumentation Nanopigments Fluid Flow and Transfer Processes Physics General Engineering UV-VIS nanopigments 021001 nanoscience & nanotechnology Engineering (General). Civil engineering (General) Computer Science Applications Chemistry Statistical analysis properties visual_art visual_art.visual_art_medium Absorption (chemistry) TA1-2040 0210 nano-technology Materials science EXPRESION GRAFICA EN LA INGENIERIA QH301-705.5 QC1-999 Properties engineering.material 010402 general chemistry Halloysite Adsorption statistical analysis QD1-999 Óptica Process Chemistry and Technology CIELAB Mordant Epoxy NIR Silane 0104 chemical sciences Statistical design of experiments laponite chemistry Chemical engineering Ionic strength engineering Laponite |
| Zdroj: | RUA. Repositorio Institucional de la Universidad de Alicante Universidad de Alicante (UA) Applied Sciences, Vol 11, Iss 5568, p 5568 (2021) RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname Applied Sciences Volume 11 Issue 12 |
| Popis: | [EN] Sustainable and green materials have been studied in dye and pigment productions to reduce their environment impacts from being produced and applied. Although natural dyes are an excellent choice to move from agrowaste, some improvements must be made before they are applied given their poor fastness. One way of improving natural dye properties is their adsorption into nanoclay structures to give hybrid pigments. This work used tubular halloysite and laminar laponite to adsorb and stabilize natural copper chlorophyll. With a statistical design of experiments, we observed interactions between synthesis factors, such as pH, ionic strength, and surfactant or silane modification. Cool hybrid pigments with high TSR (%) values and a wide color range were obtained by using dispersions with only distilled water at room temperature. Successful chlorophyll adsorption on both nanoclay surfaces took place by XRD and DTA analyses. The maximum natural dye absorption for both nanoclay types took place under acid conditions, pH 3¿4, and in the presence of mordant. The TSR (%) improved by the silane pH interaction, and halloysite hybrid pigments obtained higher TSR values than the laponite ones. Finally, a wide chromatic green color range was obtained with the surfactant modification in both nanoclays, and the color fastening was also improved in the hybrid pigments application. The samples generated with 10% of hybrid pigments from both nanoclays and an Epoxy bioresin, show higher colorfastness than the sample with the natural chlorophyll, due to the nanoclays¿dye interaction and protection. To the Spanish Ministry of Economy and Competitiveness for funding the project entitled: Diseño y caracterización de la apariencia visual de productos (REF: RTI2018-096000-B-100). |
| Databáze: | OpenAIRE |
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