{"title":"稀胶体悬浮液中电场诱导的聚集","authors":"Paul M. Adriani, A. Gast","doi":"10.1039/DC9909000017","DOIUrl":null,"url":null,"abstract":"Electric-field-induced chain formation in dilute, non-aqueous suspensions of sterically stabilized, 1 µm poly(methyl methacrylate)(PMMA) latices are investigated. Optical microscopy and digital image analysis provide the chain-length distribution. We find that the particles carry a charge sufficient to inhibit field-induced aggregation. Equilibrium predictions of chain aggregation incorporating a screened Coulombic repulsion and field-induced dipole attraction agree well with experimental observations near the onset of aggregation; chain formation becomes diffusion limited above the threshold field strength.","PeriodicalId":12210,"journal":{"name":"Faraday Discussions of The Chemical Society","volume":"14 1","pages":"17-29"},"PeriodicalIF":0.0000,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"22","resultStr":"{\"title\":\"Electric-field-induced aggregation in dilute colloidal suspensions\",\"authors\":\"Paul M. Adriani, A. Gast\",\"doi\":\"10.1039/DC9909000017\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Electric-field-induced chain formation in dilute, non-aqueous suspensions of sterically stabilized, 1 µm poly(methyl methacrylate)(PMMA) latices are investigated. Optical microscopy and digital image analysis provide the chain-length distribution. We find that the particles carry a charge sufficient to inhibit field-induced aggregation. Equilibrium predictions of chain aggregation incorporating a screened Coulombic repulsion and field-induced dipole attraction agree well with experimental observations near the onset of aggregation; chain formation becomes diffusion limited above the threshold field strength.\",\"PeriodicalId\":12210,\"journal\":{\"name\":\"Faraday Discussions of The Chemical Society\",\"volume\":\"14 1\",\"pages\":\"17-29\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1990-01-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"22\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Faraday Discussions of The Chemical Society\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1039/DC9909000017\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Faraday Discussions of The Chemical Society","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1039/DC9909000017","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Electric-field-induced aggregation in dilute colloidal suspensions
Electric-field-induced chain formation in dilute, non-aqueous suspensions of sterically stabilized, 1 µm poly(methyl methacrylate)(PMMA) latices are investigated. Optical microscopy and digital image analysis provide the chain-length distribution. We find that the particles carry a charge sufficient to inhibit field-induced aggregation. Equilibrium predictions of chain aggregation incorporating a screened Coulombic repulsion and field-induced dipole attraction agree well with experimental observations near the onset of aggregation; chain formation becomes diffusion limited above the threshold field strength.
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