Cellulose nanocrystals/polyurethane nanocomposites. Study from the viewpoint of microphase separated structure
2013 (English)In: Carbohydrate Polymers, ISSN 0144-8617, E-ISSN 1879-1344, Vol. 92, no 1, 751-757 p.Article in journal (Refereed) Published
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.
Cellulose nanocrystals, Polyurethane, Hard and soft segments, Atomic force microscopy, Crystallization
IdentifiersURN: urn:nbn:se:kth:diva-117990DOI: 10.1016/j.carbpol.2012.09.093ISI: 000313146900106ScopusID: 2-s2.0-84868250678OAI: oai:DiVA.org:kth-117990DiVA: diva2:604445
QC 201302112013-02-112013-02-082013-02-11Bibliographically approved