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Cellulose nanocrystals/polyurethane nanocomposites. Study from the viewpoint of microphase separated structure
KTH, School of Chemical Science and Engineering (CHE), Fibre and Polymer Technology. KTH, School of Biotechnology (BIO), Glycoscience.ORCID iD: 0000-0001-9832-027X
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2013 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 92, no 1, 751-757 p.Article in journal (Refereed) Published
Abstract [en]

Cellulose nanocrystals (CNC) successfully obtained from microcrystalline cellulose (MCC) were dispersed in a thermoplastic polyurethane as matrix. Nanocomposites containing 1.5.5. 10 and 30 wt% CNC were prepared by solvent casting procedure and properties of the resulting films were evaluated from the viewpoint of polyurethane microphase separated structure, soft and hard domains. CNC were effectively dispersed in the segmented thermoplastic elastomeric polyurethane (STPUE) matrix due to the favorable matrix-nanocrystals interactions through hydrogen bonding. Cellulose nanocrystals interacted with both soft and hard segments, enhancing stiffness and stability versus temperature of the nanocomposites. Thermal and mechanical properties of STPUE/CNC nanocomposites have been associated to the generated morphologies investigated by AFM images.

Place, publisher, year, edition, pages
2013. Vol. 92, no 1, 751-757 p.
Keyword [en]
Cellulose nanocrystals, Polyurethane, Hard and soft segments, Atomic force microscopy, Crystallization
National Category
Polymer Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-117990DOI: 10.1016/j.carbpol.2012.09.093ISI: 000313146900106Scopus ID: 2-s2.0-84868250678OAI: oai:DiVA.org:kth-117990DiVA: diva2:604445
Note

QC 20130211

Available from: 2013-02-11 Created: 2013-02-08 Last updated: 2017-12-06Bibliographically approved

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Zhou, QiBerglund, Lars A.

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Fibre and Polymer TechnologyGlycoscienceWallenberg Wood Science Center
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