Photonic composite materials from cellulose nanorods and clay nanolayers

Title data

Trindade, Ana C. ; Carreto, Miguel ; Helgesen, Geir ; Knudsen, Kenneth D. ; Puchtler, Florian ; Breu, Josef ; Fernandes, Susete ; Godinho, Maria Helena ; Fossum, Jon Otto:
Photonic composite materials from cellulose nanorods and clay nanolayers.
In: The European Physical Journal Special Topics. Vol. 229 (2020) Issue 17-18 . - pp. 2741-2755.
ISSN 1951-6401
DOI: https://doi.org/10.1140/epjst/e2020-000015-y

Official URL:

Abstract in another language

Cellulose nano crystals (CNCs) are promising materials for energy efficient buildings related to the control of reflectivity and heat absorption/reflection of light. In this sense it is important to improve CNCs films fire retardant properties, which can be achieved by adding clays. Cellulose nanocrystals (CNCs) and nanolayers obtained from Sodium Fluorohectorite (NaFh) synthetic clay are both known to form liquid crystalline phases in aqueous suspensions. CNCs form cholesteric phases, which structure is preserved after water evaporation, while dry NaFh nanolayers aligned films collapse. In this initial work, it is shown that CNCs are compatible with NaFh clay. We demonstrate that the liquid crystalline phase of CNCs in water is not destroyed by the presence of NaFh nanolayers. The NaFh nanolayers act as planar anchoring surfaces to the cellulose nanorods and, after evaporation of the water coloured films are obtained. The precursor solutions and the photonic films were investigated by Describe several techniques.

Further data

Item Type:	Article in a journal
Refereed:	Yes
Keywords:	BEHAVIOR; NANOCRYSTALS; HYDROLYSIS
Institutions of the University:	Faculties Faculties > Faculty of Biology, Chemistry and Earth Sciences Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Chemistry > Chair Inorganic Chemistry I > Chair Inorganic Chemistry I - Univ.-Prof. Dr. Josef Breu
Result of work at the UBT:	No
DDC Subjects:	500 Science 500 Science > 540 Chemistry
Date Deposited:	06 Oct 2022 10:59
Last Modified:	07 Oct 2022 05:35
URI:	https://eref.uni-bayreuth.de/id/eprint/72325