scholarly journals Obtaining and Utilizing Cellulose Fibers with in-Situ Loading as an Additive for Printing Paper

Materials ◽  
2013 ◽  
Vol 6 (10) ◽  
pp. 4532-4544 ◽  
Author(s):  
Maria Fortuna ◽  
Maria Harja ◽  
Daniel Bucur ◽  
Sorin Cimpeanu
Keyword(s):  
Cellulose Fibers ◽  
Printing Paper

In situ preparation, characterization and performance of magnesium carbonate whiskers/cellulose fibers hybrid paper

Cellulose ◽  
2014 ◽  
Vol 21 (6) ◽  
pp. 4633-4641 ◽  
Author(s):  
Hui Zhang ◽  
Ziyang Chang ◽  
Xueren Qian ◽  
Xianhui An
Keyword(s):  
Cellulose Fibers ◽  
Magnesium Carbonate ◽  
In Situ Preparation ◽  
And Performance

scholarly journals The transverse and longitudinal elastic constants of pulp fibers in paper sheets

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Caterina Czibula ◽  
August Brandberg ◽  
Megan J. Cordill ◽  
Aleksandar Matković ◽  
Oleksandr Glushko ◽  
...  
Keyword(s):  
Material Properties ◽  
Material Characterization ◽  
Industrial Process ◽  
Cellulose Fibers ◽  
Mechanical Modeling ◽  
Pulp Fibers ◽  
Fiber Properties ◽  
The Individual ◽  
Longitudinal Modulus

AbstractCellulose fibers are a major industrial input, but due to their irregular shape and anisotropic material response, accurate material characterization is difficult. Single fiber tensile testing is the most popular way to estimate the material properties of individual fibers. However, such tests can only be performed along the axis of the fiber and are associated with problems of enforcing restraints. Alternative indirect approaches, such as micro-mechanical modeling, can help but yield results that are not fully decoupled from the model assumptions. Here, we compare these methods with nanoindentation as a method to extract elastic material constants of the individual fibers. We show that both the longitudinal and the transverse elastic modulus can be determined, additionally enabling the measurement of fiber properties in-situ inside a sheet of paper such that the entire industrial process history is captured. The obtained longitudinal modulus is comparable to traditional methods for larger indents but with a strongly increased scatter as the size of the indentation is decreased further.

scholarly journals Palladium Nanoparticles on Modified Cellulose as a Novel Catalyst for Low Temperature Gas Reactions

2021 ◽  
Author(s):  
Esteban Gioria ◽  
Chiara Signorini ◽  
María Claudia Taleb ◽  
Magdolna Mihályi ◽  
Laura Gutierrez
Keyword(s):  
Low Temperature ◽  
Metallic Nanoparticles ◽  
Cellulose Fibers ◽  
Phase Reaction ◽  
Test Molecule ◽  
Wide Range ◽  
Gas Reactions ◽  
Novel Catalyst ◽  
Catalytic Test

Abstract Palladium was incorporated into carboxymethylated cellulose fibers as a support, thereby becoming an efficient and stable catalyst for low temperature gas phase reaction. Thus, NO was used as test molecule of Greenhouse Gas to be catalytically reduced with hydrogen on an eco-friendly sustainable material containing palladium as the active site. Prior to the catalytic test, the catalysts were reduced with glucose as an eco-friendly reagent. The material characterization was performed by SEM-EDS, XRD, LRS, TGA and FTIR.The catalytic results showed that at 170°C, NO conversion was 100% with a selectivity of 70% to nitrogen. While NOX species were completely converted into N2 at temperatures higher than 180°C. The starting commercial material Solucell® was also studied, but its performance resulted lower than the ones of functionalized fibers.The use of this strategy, i.e., the functionalization of cellulose fibers followed by in-situ formation of metallic nanoparticles, can be further applied for the design of a wide range of materials with interesting applications for gas and liquid phase reactions under mild conditions.

Polypropylene-Based Biocomposites Reinforced by Tailor-Modified Cellulose Fibers and Microfibrils

2013 ◽  
Vol 671-674 ◽  
pp. 1826-1829
Author(s):  
Yuan Feng Pan ◽  
Shu Zhao Li ◽  
Hui Ning Xiao
Keyword(s):  
Cellulose Fibers ◽  
Optimal Dosage ◽  
Reinforced Composites ◽  
Cellulose Fibres ◽  
Natural Cellulose ◽  
Cellulose Fibrils ◽  
Core Shell Structure ◽  
Cationic Latex ◽  
Modified Cellulose

Two approaches of improving the toughness of polypropylene (PP)-based composites reinforced by natural cellulose fibers were developed. The surface modification of cellulose fibrils (CMF) or fiber by either in-situ grafting polymerization of butyl acrylate (BA) on CMF surface via an atom transfer radical polymerization (ATRP) or adsorbing the cationic polymeric latex with core-shell structure on fiber surfaces was performed; and resulting fibers or CMF were used as reinforments in an attempt to enhance the toughness of the PP-based composites. The results of mechanical properties indicated that the flexure, tensile, and impact strengths of the CMF-g-PBA reinforced composites were all improved. The cellulose fibres treated by cationic latex also showed the same trend. The optimal dosage of latex for hydrophobic-modifying fibers was also identified.

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