Cellulose nanocrystal-based liquid crystal structures and the unique optical characteristics of cellulose nanocrystal films
نویسندگان
چکیده
Liquid crystals (LC) have been found to many unique characteristics during the last few decades. The liquid crystal phase is ubiquitous in biological world, as well cellulose and its derivatives. Cellulose nanocrystals (CNC), which can obtain chiral LC aqueous suspension, attracting much attention. size properties of CNC, such their light weight, special optical properties, non-toxicity, biocompatibility, etc., made them widely applicable diverse fields. This brief literature review introduces relationship between CNC. Advantages CNC a forming material preparation are discussed. left-handed cholesteric structure corresponding CNC-based described detail. suspension three stages also described. Then, main reasons accounting for brittleness non-uniformity pristine summarized, ways overcome these problems. Finally, some applications films anti-counterfeiting, colorimetric sensors, composite devices considered.
منابع مشابه
Digital Color in Cellulose Nanocrystal Films
Cellulose nanocrystals (CNCs) form chiral nematic phases in aqueous suspensions that can be preserved upon evaporation of water. The resulting films show an intense directional coloration determined by their microstructure. Here, microreflection experiments correlated with analysis of the helicoidal nanostructure of the films reveal that the iridescent colors and the ordering of the individual ...
متن کاملEquilibrium Liquid Crystal Phase Diagrams and Detection of Kinetic Arrest in Cellulose Nanocrystal Suspensions
1 Experimental Soft Matter Physics Group, Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg City, Luxembourg, 2 Theory of Soft Condensed Matter Physics Group, Physics and Materials Science Research Unit, University of Luxembourg, Luxembourg City, Luxembourg, 3 Physics and Materials Science Research Unit, Laboratory for the Physics of Advanced Materials, Universit...
متن کاملCellulose nanocrystal reinforced oxidized natural rubber nanocomposites.
Natural rubber (NR) latex particles were oxidized using KMnO4 as oxidant to promote the insertion of hydroxyl groups in the surface polyisoprene chains. Different degrees of oxidation were investigated. Both unoxidized and oxidized NR (ONR) latex were used to prepare nanocomposite films reinforced with cellulose nanocrystals (CNCs) by casting/evaporation. The oxidation of NR was carried out to ...
متن کاملcomparing the microstructure, topography and surface hydrophilicity of starch polyvinyl alcohol based films containing nanoclay and cellulose nanocrystal
the main objectives of this research were the study and comparing the microstructure of pva-stnccand pva-st-mmt by x ray diffraction and atomic force microscopy (afm) and as well as,comparing the effects of two nanoparticle on surface hydrophilicity and moisture absorption. xdiffraction patterns showed that microstructure of the pva-st-mmt films was exfoliated andpva-st-ncc was closer to interc...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Bioresources
سال: 2021
ISSN: ['1930-2126']
DOI: https://doi.org/10.15376/biores.16.1.wei