Linear Birefringent Films of Cellulose Nanocrystals Produced by Dip-Coating

Autor:	Arturo Mendoza-Galván, Tania Tejeda-Galán, Amos B. Domínguez-Gómez, Reina Araceli Mauricio-Sánchez, Kenneth Järrendahl, Hans Arwin
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	lcsh:Chemistry body regions Inorganic Chemistry Mueller matrix Oorganisk kemi nanocrystalline cellulose lcsh:QD1-999 birefringence technology industry and agriculture nanostructured films Article
Zdroj:	Nanomaterials Volume 9 Issue 1 Nanomaterials, Vol 9, Iss 1, p 45 (2018)
Popis:	Transparent films of cellulose nanocrystals (CNC) are prepared by dip-coating on glass substrates from aqueous suspensions of hydrolyzed filter paper. Dragging forces acting during films&rsquo deposition promote a preferential alignment of the rod-shaped CNC. Films that are 2.8 and 6.0 µ m in thickness show retardance effects, as evidenced by placing them between a linearly polarized light source and a linear polarizer sheet in the extinction configuration. Transmission Mueller matrix spectroscopic ellipsometry measurements at normal incidence as a function of sample rotation were used to characterize polarization properties. A differential decomposition of the Mueller matrix reveals linear birefringence as the unique polarization parameter. These results show a promising way for obtaining CNC birefringent films by a simple and controllable method.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=pmid_dedup__::679c388e812f462960544e7600b79dd7 http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-155615 Zobrazit plný text záznamu