Adsorption and interfacial structure of nanocelluloses at fluid interfaces.
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| Title: | Adsorption and interfacial structure of nanocelluloses at fluid interfaces. |
|---|---|
| Authors: | Bertsch, Pascal1 (AUTHOR) pascal.bertsch@hest.ethz.ch, Fischer, Peter1 (AUTHOR) |
| Source: | Advances in Colloid & Interface Science. Feb2020, Vol. 276, pN.PAG-N.PAG. 1p. |
| Subjects: | Adsorption (Chemistry), Contact angle, Surface properties, Adsorption kinetics, Foam, Emulsions, Oil-water interfaces, Cellulose nanocrystals |
| Abstract: | Nanocelluloses (NCs), more specifically cellulose nanocrystals and nanofibrils, are a green alternative for the stabilization of fluid interfaces. The adsorption of NCs at oil-water interfaces facilitates the formation of stable and biocompatible Pickering emulsions. In contrast, unmodified NCs are not able to stabilize foams. As a consequence, NCs are often hydrophobized by covalent modifications or adsorption of surfactants, allowing also the stabilization of foams or functional inverse, double, and stimuli-responsive emulsions. Although the interfacial stabilization by NCs is readily exploited, the driving force of adsorption and stabilization mechanisms remained long unclear. Here, we summarize the recent advances in the understanding of NC adsorption regarding kinetics, isotherms, and energetic aspects, as well as their interfacial structure, surface coverage, and contact angle. We thereby distinguish unmodified NCs, covalently modified NCs, and surfactant enhanced adsorption. Unlabelled Image • Review on the adsorption of nanocelluloses at fluid-fluid interfaces regarding kinetics, isotherms, and energetic aspects • Discussion on the interfacial layer structure, coverage, rheology, and contact angle of nanocelluloses at fluid interfaces • Native hydrophilic and hydrophobized nanocelluloses reveal fundamentally different adsorption and interfacial structure • Discussion why nanocelluloses efficiently stabilize emulsions but fail to stabilize foams • Altering nanocellulose surface properties allows the stabilization of foams and inverse, double, or responsive emulsions [ABSTRACT FROM AUTHOR] |
| Copyright of Advances in Colloid & Interface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
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| Header | DbId: egs DbLabel: Engineering Source An: 141435070 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Adsorption and interfacial structure of nanocelluloses at fluid interfaces. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Bertsch%2C+Pascal%22">Bertsch, Pascal</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> pascal.bertsch@hest.ethz.ch</i><br /><searchLink fieldCode="AR" term="%22Fischer%2C+Peter%22">Fischer, Peter</searchLink><relatesTo>1</relatesTo> (AUTHOR) – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Advances+in+Colloid+%26+Interface+Science%22">Advances in Colloid & Interface Science</searchLink>. Feb2020, Vol. 276, pN.PAG-N.PAG. 1p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Adsorption+%28Chemistry%29%22">Adsorption (Chemistry)</searchLink><br /><searchLink fieldCode="DE" term="%22Contact+angle%22">Contact angle</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+properties%22">Surface properties</searchLink><br /><searchLink fieldCode="DE" term="%22Adsorption+kinetics%22">Adsorption kinetics</searchLink><br /><searchLink fieldCode="DE" term="%22Foam%22">Foam</searchLink><br /><searchLink fieldCode="DE" term="%22Emulsions%22">Emulsions</searchLink><br /><searchLink fieldCode="DE" term="%22Oil-water+interfaces%22">Oil-water interfaces</searchLink><br /><searchLink fieldCode="DE" term="%22Cellulose+nanocrystals%22">Cellulose nanocrystals</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Nanocelluloses (NCs), more specifically cellulose nanocrystals and nanofibrils, are a green alternative for the stabilization of fluid interfaces. The adsorption of NCs at oil-water interfaces facilitates the formation of stable and biocompatible Pickering emulsions. In contrast, unmodified NCs are not able to stabilize foams. As a consequence, NCs are often hydrophobized by covalent modifications or adsorption of surfactants, allowing also the stabilization of foams or functional inverse, double, and stimuli-responsive emulsions. Although the interfacial stabilization by NCs is readily exploited, the driving force of adsorption and stabilization mechanisms remained long unclear. Here, we summarize the recent advances in the understanding of NC adsorption regarding kinetics, isotherms, and energetic aspects, as well as their interfacial structure, surface coverage, and contact angle. We thereby distinguish unmodified NCs, covalently modified NCs, and surfactant enhanced adsorption. Unlabelled Image • Review on the adsorption of nanocelluloses at fluid-fluid interfaces regarding kinetics, isotherms, and energetic aspects • Discussion on the interfacial layer structure, coverage, rheology, and contact angle of nanocelluloses at fluid interfaces • Native hydrophilic and hydrophobized nanocelluloses reveal fundamentally different adsorption and interfacial structure • Discussion why nanocelluloses efficiently stabilize emulsions but fail to stabilize foams • Altering nanocellulose surface properties allows the stabilization of foams and inverse, double, or responsive emulsions [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Advances in Colloid & Interface Science is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.cis.2019.102089 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 1 StartPage: N.PAG Subjects: – SubjectFull: Adsorption (Chemistry) Type: general – SubjectFull: Contact angle Type: general – SubjectFull: Surface properties Type: general – SubjectFull: Adsorption kinetics Type: general – SubjectFull: Foam Type: general – SubjectFull: Emulsions Type: general – SubjectFull: Oil-water interfaces Type: general – SubjectFull: Cellulose nanocrystals Type: general Titles: – TitleFull: Adsorption and interfacial structure of nanocelluloses at fluid interfaces. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Bertsch, Pascal – PersonEntity: Name: NameFull: Fischer, Peter IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 02 Text: Feb2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 00018686 Numbering: – Type: volume Value: 276 Titles: – TitleFull: Advances in Colloid & Interface Science Type: main |
| ResultId | 1 |
