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Hybrid Rigid/Soft and Biologic/Synthetic Materials: Polymers Grafted onto Cellulose Microcrystals
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-8348-2273
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology, Polymeric Materials.ORCID iD: 0000-0002-9372-0829
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2011 (English)In: Biomacromolecules, ISSN 1525-7797, E-ISSN 1526-4602, Vol. 12, no 4, 1214-1223 p.Article in journal (Refereed) Published
Abstract [en]

Rigid nanoscale polymer rods were prepared by grafting preformed amine-terminated poly(styrene) and poly(tert-butyl acrylate) onto oxidized cellulose microcrystals. Low polydispersity polymers, grown using atom transfer radical polymerization, were characterized and purified prior to cellulose attachment. Oxidation of the cellulose microcrystal led to the formation of carboxylic acids on the surface of the microcrystals. Covalent attachment of the polymers onto the cellulose microcrystals was achieved via a carbodiimide-mediated amidation reaction. The length and diameter of the polymer-cellulose composites increased upon surface modification. Typically, polymer-cellulose composites are synthesized by a grafting-from method because it can be difficult to obtain sufficient graft density using a grafting-to preparation. However, the composites reported here comprised 60-64% grafted polymer by mass. This degree of grafting-to allowed the composite to form stable suspensions in organic solvents.

Place, publisher, year, edition, pages
2011. Vol. 12, no 4, 1214-1223 p.
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-33243DOI: 10.1021/bm101506jISI: 000289223500041Scopus ID: 2-s2.0-79953896704OAI: oai:DiVA.org:kth-33243DiVA: diva2:415271
Note
QC 20110506Available from: 2011-05-06 Created: 2011-05-02 Last updated: 2017-12-11Bibliographically approved

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Malmström, EvaHult, Anders

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