Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process
Three sodium polyacrylate copolymers PD0x (Poly acrylic acid-co-sodium 4-vinylbenzenesulfonate or PD01; Poly acrylic acid-co-sodium 4-vinylbenzenesulfonate-co-hydroxyethyl methacrylate or PD02 and Poly methyl methacrylate-co-acrylic acid-co-sodium 4-vinylbenzenesulfonate-co-hydroxyethyl methacrylate...
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MDPI AG
2023-02-01
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| Online Access: | https://www.mdpi.com/1996-1944/16/3/1287 |
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| author | Guanghua Huang Haohan Wu Zhijun Liu Hanlin Hu Shifeng Guo |
| author_facet | Guanghua Huang Haohan Wu Zhijun Liu Hanlin Hu Shifeng Guo |
| author_sort | Guanghua Huang |
| collection | DOAJ |
| description | Three sodium polyacrylate copolymers PD0x (Poly acrylic acid-co-sodium 4-vinylbenzenesulfonate or PD01; Poly acrylic acid-co-sodium 4-vinylbenzenesulfonate-co-hydroxyethyl methacrylate or PD02 and Poly methyl methacrylate-co-acrylic acid-co-sodium 4-vinylbenzenesulfonate-co-hydroxyethyl methacrylate or PD03) were synthesized as water-based dispersants for grinding red–brown pigment ZnFe<sub>1.2</sub>Cr<sub>0.8</sub>O<sub>4</sub> particles prepared by the solid phase method (S-ZnF). The particle size distribution, viscosity of suspensions, and adsorption capacity of dispersants were explored by laser particle size analysis, viscometer, and thermogravimetry (TG), respectively. The application of 2 wt.% dispersant PD02 in the S-ZnF suspension ground for 90 min can deliver a finer product with the narrower particle size distribution. The added dispersant PD02 in the grinding process of the S-ZnF particles exhibits a suitable viscosity of the suspension and generates more hydrogen bonds on the S-ZnF particle surface. The sulfonic acid groups (SO<sub>3</sub><sup>−</sup>) and carboxylic acid groups (-COO<sup>−</sup>) in the dispersant PD02 can also provide a strong charge density, which is favorable for the dispersion and grinding of the S-ZnF particles in the suspensions. Furthermore, the adsorption behavior of polymeric dispersant PD02 adsorbed on the S-ZnF particles surface was simulated and analyzed by adsorption thermodynamic models and adsorption kinetic models. It is indicated that the adsorption thermodynamic behavior of dispersant PD02 adsorbed on the S-ZnF particles surface follows the Langmuir model, and the adsorption process is endothermic and a random process with increased confusion during the grinding process. In addition, the adsorption kinetics of dispersant PD02 adsorbed on the S-ZnF particles surface are more in line with the pseudo-first-order kinetic models. Therefore, the adsorption process of dispersant PD02 on the S-ZnF particles surface can be considered as a single-surface adsorption process. |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-11T09:35:29Z |
| publishDate | 2023-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-5f21b233f4444a4aa8837fb9aebdaba02023-11-16T17:19:55ZengMDPI AGMaterials1996-19442023-02-01163128710.3390/ma16031287Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding ProcessGuanghua Huang0Haohan Wu1Zhijun Liu2Hanlin Hu3Shifeng Guo4Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen 518055, ChinaHoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen 518055, ChinaHoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen 518055, ChinaHoffmann Institute of Advanced Materials, Shenzhen Polytechnic, 7098 Liuxian Blvd, Nanshan District, Shenzhen 518055, ChinaShenzhen Key Laboratory of Smart Sensing and Intelligent Systems, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, 1068 Xueyuan Avenue, Shenzhen University Town, Shenzhen 518055, ChinaThree sodium polyacrylate copolymers PD0x (Poly acrylic acid-co-sodium 4-vinylbenzenesulfonate or PD01; Poly acrylic acid-co-sodium 4-vinylbenzenesulfonate-co-hydroxyethyl methacrylate or PD02 and Poly methyl methacrylate-co-acrylic acid-co-sodium 4-vinylbenzenesulfonate-co-hydroxyethyl methacrylate or PD03) were synthesized as water-based dispersants for grinding red–brown pigment ZnFe<sub>1.2</sub>Cr<sub>0.8</sub>O<sub>4</sub> particles prepared by the solid phase method (S-ZnF). The particle size distribution, viscosity of suspensions, and adsorption capacity of dispersants were explored by laser particle size analysis, viscometer, and thermogravimetry (TG), respectively. The application of 2 wt.% dispersant PD02 in the S-ZnF suspension ground for 90 min can deliver a finer product with the narrower particle size distribution. The added dispersant PD02 in the grinding process of the S-ZnF particles exhibits a suitable viscosity of the suspension and generates more hydrogen bonds on the S-ZnF particle surface. The sulfonic acid groups (SO<sub>3</sub><sup>−</sup>) and carboxylic acid groups (-COO<sup>−</sup>) in the dispersant PD02 can also provide a strong charge density, which is favorable for the dispersion and grinding of the S-ZnF particles in the suspensions. Furthermore, the adsorption behavior of polymeric dispersant PD02 adsorbed on the S-ZnF particles surface was simulated and analyzed by adsorption thermodynamic models and adsorption kinetic models. It is indicated that the adsorption thermodynamic behavior of dispersant PD02 adsorbed on the S-ZnF particles surface follows the Langmuir model, and the adsorption process is endothermic and a random process with increased confusion during the grinding process. In addition, the adsorption kinetics of dispersant PD02 adsorbed on the S-ZnF particles surface are more in line with the pseudo-first-order kinetic models. Therefore, the adsorption process of dispersant PD02 on the S-ZnF particles surface can be considered as a single-surface adsorption process.https://www.mdpi.com/1996-1944/16/3/1287water-based dispersantsgrindingS-ZnF particlesadsorption thermodynamicadsorption kinetics |
| spellingShingle | Guanghua Huang Haohan Wu Zhijun Liu Hanlin Hu Shifeng Guo Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process Materials water-based dispersants grinding S-ZnF particles adsorption thermodynamic adsorption kinetics |
| title | Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process |
| title_full | Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process |
| title_fullStr | Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process |
| title_full_unstemmed | Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process |
| title_short | Study on the Adsorption Behavior of Polymeric Dispersants to S-ZnF Particles during Grinding Process |
| title_sort | study on the adsorption behavior of polymeric dispersants to s znf particles during grinding process |
| topic | water-based dispersants grinding S-ZnF particles adsorption thermodynamic adsorption kinetics |
| url | https://www.mdpi.com/1996-1944/16/3/1287 |
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