Interactions of ionic liquids with polysaccharides. VI. Pure cellulose nanoparticles from trimethylsilyl cellulose synthesized in ionic liquids

2008 ◽  
Vol 46 (12) ◽  
pp. 4070-4080 ◽  
Author(s):  
Sarah Köhler ◽  
Tim Liebert ◽  
Thomas Heinze
Keyword(s):  
Ionic Liquids ◽  
Cellulose Nanoparticles ◽  
Pure Cellulose

Manufacturing pure cellulose films by recycling ionic liquids as plasticizers

2020 ◽  
Vol 22 (12) ◽  
pp. 3835-3841
Author(s):  
Longhui Li ◽  
Yun Zhang ◽  
Yanling Sun ◽  
Shuang Sun ◽  
Guancheng Shen ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Green Manufacturing ◽  
Manufacturing Method ◽  
Cellulose Films ◽  
Pure Cellulose ◽  
P Recycling ◽  
Electronic Substrates

Recycling ionic liquids as plasticizers, a green manufacturing method of pure cellulose films which can be used as electronic substrates is successfully demonstrated.

scholarly journals Blending of Cellulose and Chitosan in Alkyl Imidazolium Ionic Liquids

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Olga Kuzmina ◽  
Thomas Heinze ◽  
Dariusz Wawro
Keyword(s):  
Mechanical Properties ◽  
Ionic Liquids ◽  
Ethyl Acetate ◽  
Cellulose Film ◽  
Imidazolium Ionic Liquids ◽  
Pure Cellulose ◽  
Polymer Aggregates ◽  
Chitosan Films ◽  
Chitosan Blends ◽  
Blended Film

The production of cellulose/chitosan blends in alkyl imidazolium ionic liquids (ILs) was studied in this work. Selected organic solvents, such as dimethyl sulfoxide, ethyl acetate, and diethyl ether, were used as cosolvents. The addition of cosolvents decreased the viscosity of cellulose/chitosan solutions in ILs and facilitated the dissolution of polysaccharides, thereby decreasing the and polymer aggregates sizes in the solutions. The cellulose/chitosan films were produced from the studied solutions. The presence of one of cosolvent and ILs in the blended films was confirmed by FTIR spectroscopy. The blended film is stronger than pure cellulose film, and the addition of cosolvents has an influence on its mechanical properties.

scholarly journals Application of Cellulose Acetate Reinforced Nanocomposite Fluorescence Film as Filter and Bio-Packaging Material with Antibacterial Properties

2020 ◽  
Vol 5 (1) ◽  
pp. 45-55
Author(s):  
Yakubu Azeh ◽  
David O. Adetitun ◽  
Gabriel A. Olatunji ◽  
Folahan A. Adekola
Keyword(s):  
Cellulose Acetate ◽  
Antibacterial Properties ◽  
Packaging Material ◽  
Toluene Diisocyanate ◽  
Nanocomposite Films ◽  
Packaging Materials ◽  
Cellulose Nanoparticles ◽  
Pure Cellulose ◽  
Modified Cellulose ◽  
Scanning Electron

AbstractIn an effort at developing new filters and bio-packaging materials with antibacterial properties, nanocomposite fluorescence films of cellulose acetate reinforced with cellulose nanoparticles, methylcellulose nanoparticles, propylcellulose nanoparticles, toluene diisocyanate modified cellulose and cellulose acetate nanoparticles were prepared and characterized. The effects of the nanoparticles on the mechanical, crystallinity and morphology of the nanocomposite films was studied. The sensitivity of bacteria against the new nanocomposite films was experimented. Scanning electron microscopy showed the films to be well dispersed. Modulus increase was directly proportional to nanoparticle loading. Samples with maximum compatibility were cellulose nanoparticles (CNPs) loading of 40% with modulus of 113.3Mpa and toluene diisocyanate modified cellulose nanoparticles (TDI-CNPs) at 20% loading had 146.0Mpa. Others include cellulose acetate nanoparticles (CANPs) at 30% loading with 73.0Mpa; methylcellulose acetate nanoparticles (MCNPs) with 5% loading had a modulus of 87.3Mpa and pure cellulose acetate had 45.0Mpa. The films were applied as filters for the removal of cells of Bacillus; Enterococcus and Micrococcus sp. from the crude bacteriocin, with recoverability of 95.9% based on the bacteriocin produced. The films showed limited antibacterial properties against clinical Pseudomonas sp 1, Pseudomonas sp 2 and Proteus sp. It is concluded that the films showed limited antibacterial properties hence it has antibacterial potentials and capabilities.

Pure Cellulose Nanoparticles from Trimethylsilyl Cellulose

2010 ◽  
Vol 294 (2) ◽  
pp. 96-106 ◽  
Author(s):  
Marc Kostag ◽  
Sarah Köhler ◽  
Tim Liebert ◽  
Thomas Heinze
Keyword(s):  
Cellulose Nanoparticles ◽  
Pure Cellulose

SEM Study of Tension Wood Fiber Morphology and its Effect on Paper Properties

1977 ◽  
Vol 35 ◽  
pp. 308-309
Author(s):  
K. W. Robinson
Keyword(s):  
Tension Wood ◽  
Wood Fiber ◽  
Strength Properties ◽  
Fiber Morphology ◽  
Paper Properties ◽  
Pure Cellulose ◽  
Short Rotation ◽  
Hardwood Trees ◽  
Sem Study

Tension wood (TW) is an abnormal tissue of hardwood trees; although it has been isolated from most parts of the tree, it is frequently found on the upper side of branches and leaning stems. TW has been classically associated with geotropic alignment, but more recently it has been associated with fast growth. Paper made from TW is generally lower in strength properties. Consequently, the paper industries' growing dependence on fast growing, short- rotation trees will result in higher amounts of TW in the final product and a corresponding reduction in strength.Relatively few studies have dealt with the role of TW in the structure of paper. It was suggested that the lower strength properties of TW were due to a combination of factors, namely, its unique morphology, compression failures in the cell wall, and lower hemicellulose content. Central to the unique morphology of the TW fiber is the thick gelatinous layer (G-layer) composed almost entirely of pure cellulose.

Investigation of Various Ionic Liquids and Catalyst Materials for Lithium-Oxygen Batteries

2011 ◽  
pp. 110923034559006
Author(s):  
Arnd Garsuch ◽  
D. Michael Badine ◽  
Klaus Leitner ◽  
Luiz H. S. Gasparotto ◽  
Natalia Borisenko ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Lithium Oxygen Batteries
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