Changes in Phase Behavior from the Substitution of Ethylene Oxide with Carbon Dioxide in the Head Group of Nonionic Surfactants

dc.contributor.authorSpiering, Vivian Jeannette
dc.contributor.authorCiapetti, Aurora
dc.contributor.authorTupinamba Lima, Michelle
dc.contributor.authorHayward, Diminic W.
dc.contributor.authorNoirez, Laurence
dc.contributor.authorAppavou, Marie-Sousai
dc.contributor.authorSchomäcker, Reinhard
dc.contributor.authorGradzielski, Michael
dc.date.accessioned2020-02-13T13:46:59Z
dc.date.available2020-02-13T13:46:59Z
dc.date.issued2019-11-25
dc.description.abstractNonionic ethylene oxide (EO)‐based surfactants are widely employed in commercial applications and normally form gel‐like liquid crystalline phases at higher concentrations, rendering their handling under such conditions difficult. By incorporating CO2 units in their hydrophilic head groups, the consumption of the petrochemical EO was reduced, and the tendency to form liquid crystals was suppressed completely. This surprising behavior was characterized by rheology and studied with respect to its structural origin by means of small‐angle neutron scattering (SANS). These experiments showed a strongly reduced repulsive interaction between the micellar aggregates, attributed to a reduced hydration and enhanced interpenetration of the head groups owing to the presence of the CO2 units. In addition, with increasing CO2 content the surfactants became more efficient and effective with respect to their surface activity. These findings are important because the renewable resource CO2 is used, and the CO2‐containing surfactants allow handling at very high concentrations, an aspect of enormous practical importance.en
dc.description.sponsorshipBMBF, 033RC002C, CO2Plus - Verbundvorhaben: DreamResource - CO2 für reaktive Polyole und grenzflächenaktive Substanzen - Teilvorhaben 3: Amphiphile Moleküleen
dc.description.sponsorshipTU Berlin, Open-Access-Mittel - 2019en
dc.identifier.eissn1864-564X
dc.identifier.issn1864-5631
dc.identifier.urihttps://depositonce.tu-berlin.de/handle/11303/10751
dc.identifier.urihttp://dx.doi.org/10.14279/depositonce-9646
dc.language.isoen
dc.relation.ispartof10.14279/depositonce-12744en
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc540 Chemie und zugeordnete Wissenschaftenen
dc.subject.othercarbon dioxideen
dc.subject.otherliquid crystalsen
dc.subject.otherlow viscosityen
dc.subject.othernonionic surfactantsen
dc.subject.othersmall-angle neutron scatteringen
dc.titleChanges in Phase Behavior from the Substitution of Ethylene Oxide with Carbon Dioxide in the Head Group of Nonionic Surfactantsen
dc.typeArticleen
dc.type.versionpublishedVersionen
dcterms.bibliographicCitation.doi10.1002/cssc.201902855
dcterms.bibliographicCitation.issue3
dcterms.bibliographicCitation.journaltitleChemSusChemen
dcterms.bibliographicCitation.originalpublishernameWileyen
dcterms.bibliographicCitation.originalpublisherplaceWeinheimen
dcterms.bibliographicCitation.pageend607
dcterms.bibliographicCitation.pagestart601
dcterms.bibliographicCitation.volume13
tub.accessrights.dnbfree
tub.affiliationFak. 2 Mathematik und Naturwissenschaften::Inst. Chemie::FG Physikalische Chemie / Molekulare Materialwissenschaftende
tub.affiliation.facultyFak. 2 Mathematik und Naturwissenschaftende
tub.affiliation.groupFG Physikalische Chemie / Molekulare Materialwissenschaftende
tub.affiliation.instituteInst. Chemiede
tub.publisher.universityorinstitutionTechnische Universität Berlinde

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