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

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.

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.

scholarly journals The Impact of Filler Geometry on Polylactic Acid-Based Sustainable Polymer Composites

Molecules ◽  
2020 ◽  
Vol 26 (1) ◽  
pp. 149
Author(s):  
Karol Leluk ◽  
Stanisław Frąckowiak ◽  
Joanna Ludwiczak ◽  
Tomasz Rydzkowski ◽  
Vijay Kumar Thakur
Keyword(s):  
Polymer Composites ◽  
Polylactic Acid ◽  
Matrix Material ◽  
Chemical Properties ◽  
Precipitated Calcium Carbonate ◽  
Cellulose Fibres ◽  
Shape Factors ◽  
Pure Cellulose ◽  
Physico Chemical ◽  
The Impact

Recently, biocomposites have emerged as materials of great interest to the scientists and industry around the globe. Among various polymers, polylactic acid (PLA) is a popular matrix material with high potential for advanced applications. Various particulate materials and nanoparticles have been used as the filler in PLA based matrix. One of the extensively studied filler is cellulose. However, cellulose fibres, due to their hydrophilic nature, are difficult to blend with a hydrophobic polymer matrix. This leads to agglomeration and creates voids, reducing the mechanical strength of the resulting composite. Moreover, the role of the various forms of pure cellulose and its particle shape factors has not been analyzed in most of the current literature. Therefore, in this work, materials of various shapes and shape factors were selected as fillers for the production of polymer composites using Polylactic acid as a matrix to fill this knowledge gap. In particular, pure cellulose fibres (three types with different elongation coefficient) and two mineral nanocomponents: precipitated calcium carbonate and montmorillonite were used. The composites were prepared by a melt blending process using two different levels of fillers: 5% and 30%. Then, the analysis of their thermomechanical and physico-chemical properties was carried out. The obtained results were presented graphically and discussed in terms of their shape and degree of filling.

scholarly journals Nonisocyanate Poly(Hydroxyl Urethane)-Based Green Polymer Hybrid Coating Systems: Tailoring of Biomacromolecular Compound Architecture Using APTMS-ZnO/TEMPO-Oxidized Cellulose Nanoparticles

ACS Omega ◽  
2020 ◽  
Vol 5 (18) ◽  
pp. 10315-10326 ◽  
Author(s):  
Mhd. Abd. Cader Mhd. Haniffa ◽  
Hazlee Azil Illias ◽  
Ching Yern Chee ◽  
Shaliza Ibrahim ◽  
Viorel Sandu ◽  
...  
Keyword(s):  
Hybrid Coating ◽  
Oxidized Cellulose ◽  
Cellulose Nanoparticles ◽  
Polymer Hybrid ◽  
Green Polymer

Preparation and Characterization of Novel Quaternized Cellulose Nanoparticles as Protein Carriers

2009 ◽  
Vol 9 (9) ◽  
pp. 857-863 ◽  
Author(s):  
Yongbo Song ◽  
Jinping Zhou ◽  
Qian Li ◽  
Yi Guo ◽  
Lina Zhang
Keyword(s):  
Cellulose Nanoparticles ◽  
Protein Carriers
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