Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll
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...
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MDPI AG
2021-06-01
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| Online Access: | https://www.mdpi.com/2076-3417/11/12/5568 |
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| author | Bàrbara Micó-Vicent Esther Perales Romero Jorge Jordán-Núñez Valentín Viqueira |
| author_facet | Bàrbara Micó-Vicent Esther Perales Romero Jorge Jordán-Núñez Valentín Viqueira |
| author_sort | Bàrbara Micó-Vicent |
| collection | DOAJ |
| description | 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. |
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| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T10:21:55Z |
| publishDate | 2021-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-de883290140e4a5887bbd5b2d5c1219a2023-11-22T00:22:25ZengMDPI AGApplied Sciences2076-34172021-06-011112556810.3390/app11125568Halloysite and Laponite Hybrid Pigments Synthesis with Copper ChlorophyllBàrbara Micó-Vicent0Esther Perales Romero1Jorge Jordán-Núñez2Valentín Viqueira3Departamento de Ingeniería Gráfica, Universitat Politècnica de València, Campus d’Alcoi, 03801 Alcoy, Alicante, SpainDepartamento de Óptica Farmacología y Anatomía, Universidad de Alicante, 03690 San Vicent del Raspeig, Alicante, SpainDepartamento de Ingeniería Gráfica, Universitat Politècnica de València, Campus d’Alcoi, 03801 Alcoy, Alicante, SpainDepartamento de Óptica Farmacología y Anatomía, Universidad de Alicante, 03690 San Vicent del Raspeig, Alicante, SpainSustainable 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.https://www.mdpi.com/2076-3417/11/12/5568halloysitelaponitenanopigmentschlorophyllstatistical design of experimentsstatistical analysis |
| spellingShingle | Bàrbara Micó-Vicent Esther Perales Romero Jorge Jordán-Núñez Valentín Viqueira Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll Applied Sciences halloysite laponite nanopigments chlorophyll statistical design of experiments statistical analysis |
| title | Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll |
| title_full | Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll |
| title_fullStr | Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll |
| title_full_unstemmed | Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll |
| title_short | Halloysite and Laponite Hybrid Pigments Synthesis with Copper Chlorophyll |
| title_sort | halloysite and laponite hybrid pigments synthesis with copper chlorophyll |
| topic | halloysite laponite nanopigments chlorophyll statistical design of experiments statistical analysis |
| url | https://www.mdpi.com/2076-3417/11/12/5568 |
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