FigsharePub Date : 2016-06-29DOI: 10.1021/acs.jafc.6b01378.s001
Elisabeth Asmus (2849036), Christian Popp (2849045), AdrianA. Friedmann (2849039), Katja Arand (2849042), Markus Riederer (480361)
{"title":"Water Sorption Isotherms of Surfactants: A Tool TonEvaluate Humectancy","authors":"Elisabeth Asmus (2849036), Christian Popp (2849045), AdrianA. Friedmann (2849039), Katja Arand (2849042), Markus Riederer (480361)","doi":"10.1021/acs.jafc.6b01378.s001","DOIUrl":"https://doi.org/10.1021/acs.jafc.6b01378.s001","url":null,"abstract":"Fundamentalnexperimental data for moisture absorption of non-ionicnpolydisperse surfactants with differing ethylene oxide (EO) contentnand variable aliphatic portions were measured at relative humiditiesnbetween 0 and 95% at 25 °C. Remarkable differences in moisturenabsorption were observed between surfactant classes but also withinnone series of surfactants differing in either EO content or the long-chainnaliphatic fraction. Both the EO units as well as the entire molecularnstructure, including also the lipophilic domain, were discussed tonaccount for the humectant activity of surfactants. Water sorptionnisotherms showed an exponential shape, which was argued to be associatednwith the formation of a “free” water domain. These humectantnproperties might be relevant to the behavior of a foliar-applied sprayndroplet of agrochemical formulation products because the uptake ofnactive ingredients will be enhanced as a result of deferred crystalnprecipitation.","PeriodicalId":522662,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2016-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://figshare.com/articles/journal_contribution/Water_Sorption_Isotherms_of_Surfactants_A_Tool_To_Evaluate_Humectancy/3457610","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147901296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}