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Nordenström, Malin
Publications (7 of 7) Show all publications
Benselfelt, T., Nordenström, M., Hamedi, M. & Wågberg, L. (2019). Ion-induced assemblies of highly anisotropic nanoparticles are governed by ion-ion correlation and specific ion effects. Nanoscale, 11(8), 3514-3520
Open this publication in new window or tab >>Ion-induced assemblies of highly anisotropic nanoparticles are governed by ion-ion correlation and specific ion effects
2019 (English)In: Nanoscale, ISSN 2040-3364, E-ISSN 2040-3372, Vol. 11, no 8, p. 3514-3520Article in journal (Refereed) Published
Abstract [en]

Ion-induced assemblies of highly anisotropic nanoparticles can be explained by a model consisting of ion-ion correlation and specific ion effects: dispersion interactions, metal-ligand complexes, and local acidic environments. Films of cellulose nanofibrils and montmorillonite clay were treated with different ions, and their subsequent equilibrium swelling in water was related to important parameters of the model in order to investigate the relative importance of the mechanisms. Ion-ion correlation was shown to be the fundamental attraction, supplemented by dispersion interaction for polarizable ions such as Ca2+ and Ba2+, or metal-ligand complexes for ions such as Cu2+, Al3+ and Fe3+. Ions that form strong complexes induce local acidic environments that also contribute to the assembly. These findings are summarized in a comprehensive semi-quantitative model and are important for the design of nanomaterials and for understanding biological systems where specific ions are involved.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2019
National Category
Other Chemistry Topics
Identifiers
urn:nbn:se:kth:diva-245906 (URN)10.1039/c8nr10175b (DOI)000459504400008 ()30742178 (PubMedID)2-s2.0-85061966436 (Scopus ID)
Note

QC 20190308

Available from: 2019-03-08 Created: 2019-03-08 Last updated: 2019-04-08Bibliographically approved
Kaldéus, T., Nordenström, M., Erlandsson, J., Wågberg, L. & Malmström, E. (2019). Redispersibility properties of dried cellulose nanofibrils - influence on structure and mechanical properties.
Open this publication in new window or tab >>Redispersibility properties of dried cellulose nanofibrils - influence on structure and mechanical properties
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2019 (English)In: Article in journal (Other academic) Epub ahead of print
National Category
Polymer Technologies Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-244055 (URN)
Note

QC 20190218

Available from: 2019-02-15 Created: 2019-02-15 Last updated: 2019-02-18Bibliographically approved
Kaldéus, T., Nordenström, M., Carlmark, A., Wågberg, L. & Malmström, E. (2018). Insights into the EDC-mediated PEGylation of cellulose nanofibrils and their colloidal stability. Carbohydrate Polymers, 181, 871-878
Open this publication in new window or tab >>Insights into the EDC-mediated PEGylation of cellulose nanofibrils and their colloidal stability
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2018 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 181, p. 871-878Article in journal (Refereed) Published
Abstract [en]

EDC-mediated coupling has frequently been utilized to poly(ethylene glycol) functionalize (PEGylate) cellulose-based materials, but no work has previously been reported on the direct N-(3-dimethylaminopropyl)-N-ethylcarbodiimide (EDC)-mediated PEGylation of cellulose nanofibrils (CNF). Herein, we report the first study where CNF has been directly sterically stabilized with amine-terminated PEG employing N-hydroxysuccinimide (NHS)-assisted EDC-coupling. This work has shown that this coupling reaction is highly sensitive to the reaction conditions and purification procedures, and hence an optimized coupling protocol was developed in order to achieve a reaction yield. Elemental analysis of the nitrogen content also showed the successful PEGylation. It was also shown that a surprisingly low PEGylation (1%) is sufficient to significantly improve the colloidal stability of the PEGylated samples, which reached dispersion-arrested-state-transitions at higher concentrations than neat CNF. The colloidal stability was preserved with increasing ionic strength, when comparably long polymer chains were grafted, targeting only 1% PEGylation.

Place, publisher, year, edition, pages
Elsevier, 2018
Keywords
Cellulose nanofibrils, Colloidal stability, PEGylation, Steric stabilization
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-220410 (URN)10.1016/j.carbpol.2017.11.065 (DOI)000418661000101 ()29254048 (PubMedID)2-s2.0-85037689178 (Scopus ID)
Note

QC 20171220

Available from: 2017-12-20 Created: 2017-12-20 Last updated: 2019-02-17Bibliographically approved
Nordenström, M., Riazanova, A., Järn, M., Paulraj, T., Turner, C., Ström, V., . . . Svagan, A. (2018). Superamphiphobic coatings based on liquid-core microcapsules with engineered capsule walls and functionality. Scientific Reports, 8, Article ID 3647.
Open this publication in new window or tab >>Superamphiphobic coatings based on liquid-core microcapsules with engineered capsule walls and functionality
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2018 (English)In: Scientific Reports, ISSN 2045-2322, E-ISSN 2045-2322, Vol. 8, article id 3647Article in journal (Refereed) Published
Abstract [en]

Microcapsules with specific functional properties, related to the capsule wall and core, are highly desired in a number of applications. In this study, hybrid cellulose microcapsules (1.2 +/- 0.4 mu m in diameter) were prepared by nanoengineering the outer walls of precursor capsules. Depending on the preparation route, capsules with different surface roughness (raspberry or broccoli-like), and thereby different wetting properties, could be obtained. The tunable surface roughness was achieved as a result of the chemical and structural properties of the outer wall of a precursor capsule, which combined with a new processing route allowed in-situ formation of silica nanoparticles (30-40 nm or 70 nm in diameter). By coating glass slides with "broccoli-like" microcapsules (30-40 nm silica nanoparticles), static contact angles above 150 degrees and roll-off angles below 6 degrees were obtained for both water and low surface-tension oil (hexadecane), rendering the substrate superamphiphobic. As a comparison, coatings from raspberry-like capsules were only strongly oleophobic and hydrophobic. The liquid-core of the capsules opens great opportunities to incorporate different functionalities and here hydrophobic superparamagnetic nanoparticles (SPIONs) were encapsulated. As a result, magnetic broccoli-like microcapsules formed an excellent superamphiphobic coating-layer on a curved geometry by simply applying an external magnetic field.

Place, publisher, year, edition, pages
NATURE PUBLISHING GROUP, 2018
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-225297 (URN)10.1038/s41598-018-21957-y (DOI)000426045700068 ()29483613 (PubMedID)2-s2.0-85042684065 (Scopus ID)
Note

QC 20180405

Available from: 2018-04-05 Created: 2018-04-05 Last updated: 2018-04-05Bibliographically approved
Nordenström, M., Wågberg, L. & Ödberg, L. G. (2016). Colloidal interactions in nanocellulose systems. Abstracts of Papers of the American Chemical Society, 251
Open this publication in new window or tab >>Colloidal interactions in nanocellulose systems
2016 (English)In: Abstracts of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 251Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
AMER CHEMICAL SOC, 2016
National Category
Organic Chemistry
Identifiers
urn:nbn:se:kth:diva-242696 (URN)000431903802496 ()
Note

QC 20190221

Available from: 2019-02-21 Created: 2019-02-21 Last updated: 2019-08-21Bibliographically approved
Wågberg, L., Fall, A. & Nordenström, M. (2016). Colloidal properties of cellulose nanofibrils. Abstracts of Papers of the American Chemical Society, 251
Open this publication in new window or tab >>Colloidal properties of cellulose nanofibrils
2016 (English)In: Abstracts of Papers of the American Chemical Society, ISSN 0065-7727, Vol. 251Article in journal, Meeting abstract (Other academic) Published
Place, publisher, year, edition, pages
AMER CHEMICAL SOC, 2016
National Category
Organic Chemistry
Identifiers
urn:nbn:se:kth:diva-242704 (URN)000431903802390 ()
Note

QC 20190220

Available from: 2019-02-20 Created: 2019-02-20 Last updated: 2019-08-21Bibliographically approved
Kaldéus, T., Nordenström, M., Erlandsson, J., Wågberg, L. & Malmström, E.Redispersibility properties of dried cellulose nanofibrils - influence on structure and mechanical properties.
Open this publication in new window or tab >>Redispersibility properties of dried cellulose nanofibrils - influence on structure and mechanical properties
Show others...
(English)Manuscript (preprint) (Other academic)
National Category
Paper, Pulp and Fiber Technology Polymer Technologies Nano Technology
Research subject
Fibre and Polymer Science
Identifiers
urn:nbn:se:kth:diva-244005 (URN)
Note

QCR 20190226

Available from: 2019-02-12 Created: 2019-02-12 Last updated: 2019-02-26Bibliographically approved
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