Results 11 to 20 of about 426,789 (380)

NANOCRISTAIS DE CELULOSE A PARTIR DE CELULOSE BACTERIANA

open access: yesQuímica Nova, 2015
Bacterial cellulose produced from Gluconacetobacter xilinus was used to produce cellulose nanocrystals by sulfuric acid hydrolysis. Hydrolysis was performed with 64% sulfuric acid at 50 ºC with the hydrolysis time ranging between 5 and 90 min.
Lais R. Lima   +7 more
doaj   +4 more sources

Photoresponsive Cellulose Nanocrystals [PDF]

open access: yesNanomaterials and Nanotechnology, 2011
In this communication a method for the creation of fluorescent cellulose nanoparticles using click chemistry and subsequent photodimerization of the installed side‐ chains is demonstrated.
Dimitris S Argyropoulos   +2 more
doaj   +7 more sources

Bio-Catalysis for the Functionalization of Cellulose Nanocrystals

open access: yesNanomaterials, 2022
In this work, the chemical modification of cellulose nanocrystals (NCs) using an enzyme as a catalyst has been performed by a “grafting from” reaction, in order to covalently functionalize the external surface of NCs with both poly(L-lactic acid) (PLLA ...
Laura Peponi   +5 more
doaj   +1 more source

Chiral self-assembly of cellulose nanocrystals is driven by crystallite bundles [PDF]

open access: yesNature Communications, 2021
The transfer of chirality across length-scales is an intriguing and universal natural phenomenon. However, connecting the properties of individual building blocks to the emergent features of their resulting large-scale structure remains a challenge.
Thomas G. Parton   +6 more
semanticscholar   +1 more source

Flexible Photonic Cellulose Nanocrystal Films [PDF]

open access: yesAdvanced Materials, 2016
The fabrication of self-assembled cellulose nanocrystal (CNC) films of tunable photonic and mechanical properties using a facile, green approach is demonstrated. The combination of tunable flexibility and iridescence can dramatically expand CNC coating and film barrier capabilities for paints and coating applications, sustainable consumer packaging ...
Guidetti, Giulia   +3 more
openaire   +3 more sources

Using cellulose nanocrystals to improve the mechanical properties of fly ash-based geopolymer construction materials

open access: yesEngineering Science and Technology, an International Journal, 2022
Ordinary Portland cement production is one of the biggest emitters of carbon dioxide. Consequently, there is a strong need for construction materials with lower environmental footprints.
Rishen Roopchund   +2 more
doaj   +1 more source

Isotherm, kinetics and thermodynamic studies of Cd 2+ adsorption from aqueous solution onto cellulose nanocrystals obtained from cassava peel [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2021
Cd2+ adsorption from aqueous solution onto cellulose nanocrystals from cassava peel (CP) was successfully studied. The sample was acid hydrolysed into cellulose nanocrystals using 64% sulphuric acid at 45oC for 45 min and was used as an adsorbent for ...
C. V. Abiaziem   +3 more
doaj   +1 more source

Superabsorbent hydrogels enhanced by quaternized tunicate cellulose nanocrystals with adjustable strength and swelling ratio

open access: yesCellulose, 2021
Superabsorbent hydrogels were prepared from biodegradable material, where the matrix was cross-linked cellulose and carboxymethyl cellulose and reinforced by quaternized tunicate cellulose nanocrystals (Q-TCNCs).
P. Wei   +4 more
semanticscholar   +1 more source

Functionalization of Cellulose Nanocrystals in Choline Lactate Ionic Liquid [PDF]

open access: yes, 2016
Cellulose nanocrystals (CNCs) are valuable nanomaterials obtained from renewable resources. Their properties make them suitable for a wide range of applications, including polymer reinforcement.
Belgacem   +9 more
core   +7 more sources

Theoretical study of cellulose II nanocrystals with different exposed facets

open access: yesScientific Reports, 2021
Derived from the most abundant natural polymer, cellulose nanocrystal materials have attracted attention in recent decades due to their chemical and mechanical properties.
Can Leng   +8 more
doaj   +1 more source

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