Margarethe Dahl, Olaf Holderer, René Haverkamp, Ingo Hoffmann, Kathleen Wood, Jessica Hübner, Thomas Hellweg and Stefan Wellert
{"title":"封闭的双连续微乳液：表面活性剂薄膜的纳米级动力学。","authors":"Margarethe Dahl, Olaf Holderer, René Haverkamp, Ingo Hoffmann, Kathleen Wood, Jessica Hübner, Thomas Hellweg and Stefan Wellert","doi":"10.1039/D4SM00925H","DOIUrl":null,"url":null,"abstract":"<p >A confined bicontinuous C<small><sub>10</sub></small>E<small><sub>4</sub></small>–D<small><sub>2</sub></small>O–<em>n</em>-octane microemulsion is studied using neutron spin echo spectroscopy (NSE). Controlled pore glasses serve as confining matrices with pore diameters ranging from 24 to 112 nm. Firstly, the microemulsion in bulk is investigated by NSE and dynamic light scattering, which allows the determination of the unperturbed collective dynamics as well as the observation of the undulation of the surfactant film. In confinement, it is observed that the collective modes are drastically slowed down in all investigated pore sizes. The undulations of the surfactant film in the largest pores are found to be comparable to those of the bulk and decrease with decreasing pore diameter. Fitting procedures of the intermediate scattering function revealed that the long wavelength undulations are cut off from the spectrum of fluctuation modes due to the interactions with the pore walls.</p>","PeriodicalId":103,"journal":{"name":"Soft Matter","volume":" 43","pages":" 8692-8701"},"PeriodicalIF":2.9000,"publicationDate":"2024-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/sm/d4sm00925h?page=search","citationCount":"0","resultStr":"{\"title\":\"Confined bicontinuous microemulsions: nanoscale dynamics of the surfactant film†‡\",\"authors\":\"Margarethe Dahl, Olaf Holderer, René Haverkamp, Ingo Hoffmann, Kathleen Wood, Jessica Hübner, Thomas Hellweg and Stefan Wellert\",\"doi\":\"10.1039/D4SM00925H\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >A confined bicontinuous C<small><sub>10</sub></small>E<small><sub>4</sub></small>–D<small><sub>2</sub></small>O–<em>n</em>-octane microemulsion is studied using neutron spin echo spectroscopy (NSE). Controlled pore glasses serve as confining matrices with pore diameters ranging from 24 to 112 nm. Firstly, the microemulsion in bulk is investigated by NSE and dynamic light scattering, which allows the determination of the unperturbed collective dynamics as well as the observation of the undulation of the surfactant film. In confinement, it is observed that the collective modes are drastically slowed down in all investigated pore sizes. The undulations of the surfactant film in the largest pores are found to be comparable to those of the bulk and decrease with decreasing pore diameter. Fitting procedures of the intermediate scattering function revealed that the long wavelength undulations are cut off from the spectrum of fluctuation modes due to the interactions with the pore walls.</p>\",\"PeriodicalId\":103,\"journal\":{\"name\":\"Soft Matter\",\"volume\":\" 43\",\"pages\":\" 8692-8701\"},\"PeriodicalIF\":2.9000,\"publicationDate\":\"2024-10-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.rsc.org/en/content/articlepdf/2024/sm/d4sm00925h?page=search\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Soft Matter\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://pubs.rsc.org/en/content/articlelanding/2024/sm/d4sm00925h\",\"RegionNum\":3,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Soft Matter","FirstCategoryId":"92","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/sm/d4sm00925h","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Confined bicontinuous microemulsions: nanoscale dynamics of the surfactant film†‡
A confined bicontinuous C10E4–D2O–n-octane microemulsion is studied using neutron spin echo spectroscopy (NSE). Controlled pore glasses serve as confining matrices with pore diameters ranging from 24 to 112 nm. Firstly, the microemulsion in bulk is investigated by NSE and dynamic light scattering, which allows the determination of the unperturbed collective dynamics as well as the observation of the undulation of the surfactant film. In confinement, it is observed that the collective modes are drastically slowed down in all investigated pore sizes. The undulations of the surfactant film in the largest pores are found to be comparable to those of the bulk and decrease with decreasing pore diameter. Fitting procedures of the intermediate scattering function revealed that the long wavelength undulations are cut off from the spectrum of fluctuation modes due to the interactions with the pore walls.
期刊介绍：
Soft Matter is an international journal published by the Royal Society of Chemistry using Engineering-Materials Science: A Synthesis as its research focus. It publishes original research articles, review articles, and synthesis articles related to this field, reporting the latest discoveries in the relevant theoretical, practical, and applied disciplines in a timely manner, and aims to promote the rapid exchange of scientific information in this subject area. The journal is an open access journal. The journal is an open access journal and has not been placed on the alert list in the last three years.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
