Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants
Pigments can retain their color for many centuries and can withstand the effects of light and weather. The paint industry suffers from issues like aggressive moisture, corrosion, and further environmental contamination of the pigment materials. Low-cost, long-lasting, and large-scale pigments are hi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-09-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/11/9/2299 |
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| author | Mohua Sinhababu Anurag Roy Narendra Kumar Monojit Dutta Senthilarasu Sundaram Smagul Karazhanov Gopalkrishnan Udayabhanu |
| author_facet | Mohua Sinhababu Anurag Roy Narendra Kumar Monojit Dutta Senthilarasu Sundaram Smagul Karazhanov Gopalkrishnan Udayabhanu |
| author_sort | Mohua Sinhababu |
| collection | DOAJ |
| description | Pigments can retain their color for many centuries and can withstand the effects of light and weather. The paint industry suffers from issues like aggressive moisture, corrosion, and further environmental contamination of the pigment materials. Low-cost, long-lasting, and large-scale pigments are highly desirable to protect against the challenges of contamination that exist in the paint industry. This exploratory study reinforces the color and thermal stability of industrial-grade (IG) magnetite (Fe<sub>3</sub>O<sub>4</sub>). IG Fe<sub>3</sub>O<sub>4</sub> pigments were further considered for surface treatment with sodium hexametaphosphate (SHMP). This metaphosphate hexamer sequestrant provides good dispersion ability and a high surface energy giving thermal and dust protection to the pigment. Various physicochemical characterizations were employed to understand the effectiveness of this treatment across various temperatures (180–300 °C). The X-ray diffraction, Raman, and X-ray photoelectron spectroscopy techniques signify that the SHMP-treated Fe<sub>3</sub>O<sub>4</sub> acquired magnetite phase stability up to 300 °C. In addition, the delta-E color difference method was also adopted to measure the effective pigment properties, where the delta-E value significantly decreased from 8.77 to 0.84 once treated with SHMP at 300 °C. The distinct color retention at 300 °C and the improved dispersion properties of surface-treated Fe<sub>3</sub>O<sub>4</sub> positions this pigment as a robust candidate for high-temperature paint and coating applications. This study further encompasses an effort to design low-cost, large-scale, and thermally stable pigments that can protect against UV-rays, dust, corrosion, and other color contaminants that are endured by building paints. |
| first_indexed | 2024-03-10T07:22:02Z |
| format | Article |
| id | doaj.art-3eccd5601a5b48faa8401d0b228f41dd |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-10T07:22:02Z |
| publishDate | 2021-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-3eccd5601a5b48faa8401d0b228f41dd2023-11-22T14:30:24ZengMDPI AGNanomaterials2079-49912021-09-01119229910.3390/nano11092299Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint ContaminantsMohua Sinhababu0Anurag Roy1Narendra Kumar2Monojit Dutta3Senthilarasu Sundaram4Smagul Karazhanov5Gopalkrishnan Udayabhanu6Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, IndiaEnvironment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UKResearch & Development, Tata Pigments Limited, Boulevard, Sakchi, Jamshedpur 831002, IndiaResearch & Development, Tata Steel Limited, Jamshedpur 831007, IndiaEnvironment and Sustainability Institute, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UKInstitute for Energy Technology (IFE), P.O. Box 40, 2027 Kjeller, NorwayDepartment of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad 826004, IndiaPigments can retain their color for many centuries and can withstand the effects of light and weather. The paint industry suffers from issues like aggressive moisture, corrosion, and further environmental contamination of the pigment materials. Low-cost, long-lasting, and large-scale pigments are highly desirable to protect against the challenges of contamination that exist in the paint industry. This exploratory study reinforces the color and thermal stability of industrial-grade (IG) magnetite (Fe<sub>3</sub>O<sub>4</sub>). IG Fe<sub>3</sub>O<sub>4</sub> pigments were further considered for surface treatment with sodium hexametaphosphate (SHMP). This metaphosphate hexamer sequestrant provides good dispersion ability and a high surface energy giving thermal and dust protection to the pigment. Various physicochemical characterizations were employed to understand the effectiveness of this treatment across various temperatures (180–300 °C). The X-ray diffraction, Raman, and X-ray photoelectron spectroscopy techniques signify that the SHMP-treated Fe<sub>3</sub>O<sub>4</sub> acquired magnetite phase stability up to 300 °C. In addition, the delta-E color difference method was also adopted to measure the effective pigment properties, where the delta-E value significantly decreased from 8.77 to 0.84 once treated with SHMP at 300 °C. The distinct color retention at 300 °C and the improved dispersion properties of surface-treated Fe<sub>3</sub>O<sub>4</sub> positions this pigment as a robust candidate for high-temperature paint and coating applications. This study further encompasses an effort to design low-cost, large-scale, and thermally stable pigments that can protect against UV-rays, dust, corrosion, and other color contaminants that are endured by building paints.https://www.mdpi.com/2079-4991/11/9/2299magnetitethermal stabilityenvironmental contaminationSHMP-treatedXRDcalcined |
| spellingShingle | Mohua Sinhababu Anurag Roy Narendra Kumar Monojit Dutta Senthilarasu Sundaram Smagul Karazhanov Gopalkrishnan Udayabhanu Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants Nanomaterials magnetite thermal stability environmental contamination SHMP-treated XRD calcined |
| title | Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants |
| title_full | Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants |
| title_fullStr | Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants |
| title_full_unstemmed | Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants |
| title_short | Surface Treatment of Industrial-Grade Magnetite Particles for Enhanced Thermal Stability and Mitigating Paint Contaminants |
| title_sort | surface treatment of industrial grade magnetite particles for enhanced thermal stability and mitigating paint contaminants |
| topic | magnetite thermal stability environmental contamination SHMP-treated XRD calcined |
| url | https://www.mdpi.com/2079-4991/11/9/2299 |
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