{"title":"二价离子对陶瓷悬浮液的分散和凝胶化的影响","authors":"Xiande Zheng, Zhengxian Di, Junqin Shi, Hengzhong Fan, Guowei Huang, Ting Li, Yunfeng Su, Junjie Song, Wanxin Wei","doi":"10.1007/s10853-024-10172-y","DOIUrl":null,"url":null,"abstract":"<div><p>We report on the dispersion and gelling mechanisms of Al<sub>2</sub>O<sub>3</sub> and Si<sub>3</sub>N<sub>4</sub> suspensions fabricated via gelcasting. These systems were prepared by introducing bivalent ions into a gelcasting system known as ISOBAM, a water-soluble copolymer of isobutylene and maleic anhydride. The addition of metal ions negatively affects viscosity, while the influence of bivalent ions on the storage modulus is closely related to the microscopic configuration of ISOBAM. This configuration is altered due to the competition between particles and metal ions in the suspension to adsorb ISOBAM. An increase in the ionic potential of metal ions accelerates the gelling rate of Al<sub>2</sub>O<sub>3</sub> suspensions and increases the surface area of ISOBAM self-assembly around the particles, thereby extending the microscopic conformation. In Si<sub>3</sub>N<sub>4</sub> suspensions, the surface area of ISOBAM around the particles initially decreases and then increases, primarily due to pH changes resulting from the hydrolysis of metal ions and Si<sub>3</sub>N<sub>4</sub>.</p></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 40","pages":"19023 - 19037"},"PeriodicalIF":3.5000,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Influence of bivalent ions on the dispersion and gelation of ceramics suspensions\",\"authors\":\"Xiande Zheng, Zhengxian Di, Junqin Shi, Hengzhong Fan, Guowei Huang, Ting Li, Yunfeng Su, Junjie Song, Wanxin Wei\",\"doi\":\"10.1007/s10853-024-10172-y\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>We report on the dispersion and gelling mechanisms of Al<sub>2</sub>O<sub>3</sub> and Si<sub>3</sub>N<sub>4</sub> suspensions fabricated via gelcasting. These systems were prepared by introducing bivalent ions into a gelcasting system known as ISOBAM, a water-soluble copolymer of isobutylene and maleic anhydride. The addition of metal ions negatively affects viscosity, while the influence of bivalent ions on the storage modulus is closely related to the microscopic configuration of ISOBAM. This configuration is altered due to the competition between particles and metal ions in the suspension to adsorb ISOBAM. An increase in the ionic potential of metal ions accelerates the gelling rate of Al<sub>2</sub>O<sub>3</sub> suspensions and increases the surface area of ISOBAM self-assembly around the particles, thereby extending the microscopic conformation. In Si<sub>3</sub>N<sub>4</sub> suspensions, the surface area of ISOBAM around the particles initially decreases and then increases, primarily due to pH changes resulting from the hydrolysis of metal ions and Si<sub>3</sub>N<sub>4</sub>.</p></div>\",\"PeriodicalId\":645,\"journal\":{\"name\":\"Journal of Materials Science\",\"volume\":\"59 40\",\"pages\":\"19023 - 19037\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-10-11\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10853-024-10172-y\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10853-024-10172-y","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Influence of bivalent ions on the dispersion and gelation of ceramics suspensions
We report on the dispersion and gelling mechanisms of Al2O3 and Si3N4 suspensions fabricated via gelcasting. These systems were prepared by introducing bivalent ions into a gelcasting system known as ISOBAM, a water-soluble copolymer of isobutylene and maleic anhydride. The addition of metal ions negatively affects viscosity, while the influence of bivalent ions on the storage modulus is closely related to the microscopic configuration of ISOBAM. This configuration is altered due to the competition between particles and metal ions in the suspension to adsorb ISOBAM. An increase in the ionic potential of metal ions accelerates the gelling rate of Al2O3 suspensions and increases the surface area of ISOBAM self-assembly around the particles, thereby extending the microscopic conformation. In Si3N4 suspensions, the surface area of ISOBAM around the particles initially decreases and then increases, primarily due to pH changes resulting from the hydrolysis of metal ions and Si3N4.
期刊介绍：
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
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