scholarly journals Surface modification of cellulose nanocrystals

Nanoscale ◽  
2014 ◽  
Vol 6 (14) ◽  
pp. 7764-7779 ◽  
Author(s):  
Samuel Eyley ◽  
Wim Thielemans
Keyword(s):  
Surface Modification ◽  
Cellulose Nanocrystals ◽  
Nanocrystalline Cellulose ◽  
Chemical Modifications

This review takes an in-depth look at the chemical modifications that have been carried out on nanocrystalline cellulose.

Non‐Covalent Polymer Surface Modification of Cellulose Nanocrystals Using Block Copolymers

2021 ◽  
pp. 2100046
Author(s):  
Olga Lidia Torres‐Rocha ◽  
Sophie Campbell ◽  
Nicole Woodcock ◽  
Julien Pinaud ◽  
Patrick Lacroix‐Desmazes ◽  
...  
Keyword(s):  
Surface Modification ◽  
Block Copolymers ◽  
Cellulose Nanocrystals ◽  
Polymer Surface ◽  
Polymer Surface Modification

scholarly journals A Review of the Surface Modification of Cellulose and Nanocellulose Using Aliphatic and Aromatic Mono- and Di-Isocyanates

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2782 ◽  
Author(s):  
Hatem Abushammala ◽  
Jia Mao
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Phenyl Isocyanate ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Diphenylmethane Diisocyanate ◽  
Chemical Modifications ◽  
Advantages And Disadvantages ◽  
Wide Range ◽  
Simple Molecules

Nanocellulose has been subjected to a wide range of chemical modifications towards increasing its potential in certain fields of interest. These modifications either modulated the chemistry of the nanocellulose itself or introduced certain functional groups onto its surface, which varied from simple molecules to polymers. Among many, aliphatic and aromatic mono- and di-isocyanates are a group of chemicals that have been used for a century to modify cellulose. Despite only being used recently with nanocellulose, they have shown great potential as surface modifiers and chemical linkers to graft certain functional chemicals and polymers onto the nanocellulose surface. This review discusses the modification of cellulose and nanocellulose using isocyanates including phenyl isocyanate (PI), octadecyl isocyanate (OI), toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HMDI), and their derivatives and polymers. It also presents the most commonly used nanocellulose modification strategies including their advantages and disadvantages. It finally discusses the challenges of using isocyanates, in general, for nanocellulose modification.

scholarly journals Surface Modification of Cured Inorganic Foams with Cationic Cellulose Nanocrystals and Their Use as Reactive Filter Media for Anionic Dye Removal

2020 ◽  
Vol 12 (24) ◽  
pp. 27745-27757
Author(s):  
Tuula Selkälä ◽  
Terhi Suopajärvi ◽  
Juho Antti Sirviö ◽  
Tero Luukkonen ◽  
Paivo Kinnunen ◽  
...  
Keyword(s):  
Surface Modification ◽  
Cellulose Nanocrystals ◽  
Dye Removal ◽  
Filter Media ◽  
Anionic Dye

Isolation and surface modification of cellulose nanocrystals from sugarcane bagasse waste: From a micro- to a nano-scale view

2018 ◽  
Vol 436 ◽  
pp. 1113-1122 ◽  
Author(s):  
F.V. Ferreira ◽  
M. Mariano ◽  
S.C. Rabelo ◽  
R.F. Gouveia ◽  
L.M.F. Lona
Keyword(s):  
Surface Modification ◽  
Sugarcane Bagasse ◽  
Cellulose Nanocrystals ◽  
Nano Scale ◽  
Bagasse Waste

Highly Modified Cellulose Nanocrystals and Formation of Epoxy-Nanocrystalline Cellulose (CNC) Nanocomposites

2016 ◽  
Vol 8 (41) ◽  
pp. 28086-28095 ◽  
Author(s):  
Eldho Abraham ◽  
Doron Kam ◽  
Yuval Nevo ◽  
Rikard Slattegard ◽  
Amit Rivkin ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Nanocrystalline Cellulose ◽  
Modified Cellulose

Fabrication of a highly elastic nanocomposite hydrogel by surface modification of cellulose nanocrystals

RSC Advances ◽  
2015 ◽  
Vol 5 (18) ◽  
pp. 13878-13885 ◽  
Author(s):  
Dong Yang ◽  
Xinwen Peng ◽  
Linxin Zhong ◽  
Xuefei Cao ◽  
Wei Chen ◽  
...  
Keyword(s):  
Surface Modification ◽  
Cellulose Nanocrystals ◽  
Nanocomposite Hydrogel ◽  
Efficient Strategy ◽  
Nanocomposite Hydrogels

A new and efficient strategy was first employed to fabricate highly elastic nanocomposite hydrogels by surface modification of cellulose nanocrystals.

scholarly journals Cellulose Nanocrystals: From Classical Hydrolysis to the Use of Deep Eutectic Solvents

2020 ◽  
Author(s):  
Manon Le Gars ◽  
Loreleï Douard ◽  
Naceur Belgacem ◽  
Julien Bras
Keyword(s):  
Mechanical Properties ◽  
Cellulose Nanocrystals ◽  
Specific Area ◽  
Deep Eutectic Solvents ◽  
Barrier Properties ◽  
Chemical Modifications ◽  
Medical Electronic ◽  
High Specific Area ◽  
Rheological Modifier

During the last two decades, interest in cellulosic nanomaterials has greatly increased. Among these nanocelluloses, cellulose nanocrystals (CNC) exhibit outstanding properties. Indeed, besides their high crystallinity, cellulose nanocrystals are interesting in terms of morphology with high aspect ratio (length 100–1000 nm, width 2–15 nm), high specific area, and high mechanical properties. Moreover, they can be used as rheological modifier, emulsifier, or for barrier properties, and their surface chemistry opens the door to numerous feasible chemical modifications, leading to a large panel of applications in medical, electronic, composites, or packaging, for example. Traditionally, their extraction is performed via monitored sulfuric acid hydrolysis, leading to well-dispersed aqueous CNC suspensions; these last bearing negative charges (half-sulfate ester groups) at their surface. More recently, natural chemicals called deep eutectic solvents (DESs) have been used for the production of CNC in a way of green chemistry, and characterization of recovered CNC is encouraging.

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