scholarly journals All-cellulose Nanocomposites using Cellulose Nanofibers

2013 ◽  
Vol 86 (2) ◽  
pp. 28-34
Author(s):  
Takashi NISHINO
Keyword(s):  
Cellulose Nanofibers ◽  
Cellulose Nanocomposites

Green all-cellulose nanocomposites made with cellulose nanofibers reinforced in dissolved cellulose matrix without heat treatment

Cellulose ◽  
2017 ◽  
Vol 24 (8) ◽  
pp. 3301-3311 ◽  
Author(s):  
Le Van Hai ◽  
Hyun Chan Kim ◽  
Abdullahil Kafy ◽  
Lindong Zhai ◽  
Jung Woong Kim ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Cellulose Nanofibers ◽  
Cellulose Matrix ◽  
Cellulose Nanocomposites

Synthesis of bimetallic Co–Pt/cellulose nanocomposites for catalytic reduction of p-nitrophenol

2022 ◽  
Author(s):  
Vividha K. Landge ◽  
Vikas S. Hakke ◽  
Manohar Kakunuri ◽  
G. Uday B. Babu ◽  
Grzegorz Boczkaj ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Catalytic Reduction ◽  
Cellulose Nanofibers ◽  
Pt Nanoparticles ◽  
Sonochemical Synthesis ◽  
Synergy Effects ◽  
Nanocomposite Catalyst ◽  
Cellulose Nanocomposites

The sonochemical synthesis of Co–Pt nanoparticles anchored on cellulose nanofibers (CNFs) was demonstrated. An enhancement in the catalytic activity of the synthesized Co–Pt/CNF nanocomposite catalyst was observed for the reduction of p-NP due to synergy effects.

scholarly journals Ice-Templated Cellulose Nanofiber Filaments as a Reinforcement Material in Epoxy Composites

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 490
Author(s):  
Tuukka Nissilä ◽  
Jiayuan Wei ◽  
Shiyu Geng ◽  
Anita Teleman ◽  
Kristiina Oksman
Keyword(s):  
Photoelectron Spectroscopy ◽  
Cellulose Nanofibers ◽  
Chemical Vapor ◽  
Cellulose Nanofiber ◽  
X Ray ◽  
The Matrix ◽  
Wide Availability ◽  
Spectroscopy Studies ◽  
Diffuse Reflectance Infrared ◽  
Cellulose Nanocomposites

Finding renewable alternatives to the commonly used reinforcement materials in composites is attracting a significant amount of research interest. Nanocellulose is a promising candidate owing to its wide availability and favorable properties such as high Young’s modulus. This study addressed the major problems inherent to cellulose nanocomposites, namely, controlling the fiber structure and obtaining a sufficient interfacial adhesion between nanocellulose and a non-hydrophilic matrix. Unidirectionally aligned cellulose nanofiber filament mats were obtained via ice-templating, and chemical vapor deposition was used to cover the filament surfaces with an aminosilane before impregnating the mats with a bio-epoxy resin. The process resulted in cellulose nanocomposites with an oriented structure and a strong fiber–matrix interface. Diffuse reflectance infrared Fourier transform and X-ray photoelectron spectroscopy studies revealed the presence of silane on the filaments. The improved interface, resulting from the surface treatment, was observable in electron microscopy images and was further confirmed by the significant increase in the tan delta peak temperature. The storage modulus of the matrix could be improved up to 2.5-fold with 18 wt% filament content and was significantly higher in the filament direction. Wide-angle X-ray scattering was used to study the orientation of cellulose nanofibers in the filament mats and the composites, and the corresponding orientation indices were 0.6 and 0.53, respectively, indicating a significant level of alignment.

scholarly journals Cellulose Nanocomposites of Cellulose Nanofibers and Molecular Coils

2021 ◽  
Vol 5 (8) ◽  
pp. 200
Author(s):  
Doug Henderson ◽  
Xin Zhang ◽  
Yimin Mao ◽  
Liangbing Hu ◽  
Robert M. Briber ◽  
...  
Keyword(s):  
Small Angle Neutron Scattering ◽  
Fracture Strain ◽  
Composition Range ◽  
Cellulose Nanofibers ◽  
Tensile Tests ◽  
Uptake Capacity ◽  
Amorphous Cellulose ◽  
Cellulose Composites ◽  
Water Uptake Capacity ◽  
Cellulose Nanocomposites

All-cellulose nanocomposites have been produced from cellulose nanofiber (CNF) suspensions and molecular coil solutions. Morphology and small-angle neutron scattering studies show the exfoliation and dispersion of CNFs in aqueous suspensions. Cellulose solutions in mixtures of ionic liquid and organic solvents were homogeneously mixed with CNF suspensions and subsequently dried to yield cellulose composites comprising CNF and amorphous cellulose over the entire composition range. Tensile tests show that stiffness and strength quantities of cellulose nanocomposites are the highest value at ca. 20% amorphous cellulose, while their fracture strain and toughness are the lowest. The inclusion of amorphous cellulose in cellulose nanocomposites alters their water uptake capacity, as measured in the ratio of the absorbed water to the cellulose mass, reducing from 37 for the neat CNF to less than 1 for a composite containing 35% or more amorphous cellulose. This study offers new insights into the design and production of all-cellulose nanocomposites.

Efforts for The Practical Use of Cellulose Nanofibers

2018 ◽  
Vol 72 (1) ◽  
pp. 59-65
Author(s):  
Masayuki Kawasaki
Keyword(s):  
Cellulose Nanofibers

Silica-supported carboxylated cellulose nanofibers for effective lysozyme adsorption: Effect of macropore size

2020 ◽  
Vol 31 (7) ◽  
pp. 2932-2941 ◽  
Author(s):  
Annie M. Rahmatika ◽  
Yohsuke Goi ◽  
Takeo Kitamura ◽  
Yuko Morita ◽  
Ferry Iskandar ◽  
...  
Keyword(s):  
Cellulose Nanofibers ◽  
Adsorption Effect ◽  
Lysozyme Adsorption

scholarly journals Construction of the Cellulose Nanofibers (CNFs) Aerogel Loading TiO2 NPs and Its Application in Disposal of Organic Pollutants

Polymers ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 1841
Author(s):  
Kang Li ◽  
Xuejie Zhang ◽  
Yan Qin ◽  
Ying Li
Keyword(s):  
High Efficiency ◽  
Sol Gel ◽  
Cellulose Nanofibers ◽  
Three Dimensional ◽  
Good Mechanical Property ◽  
Polar Groups ◽  
Dimensional Network ◽  
Natural Polysaccharide ◽  
Valuable Method ◽  
Adsorption Capability

Aerogels have been widely used in the adsorption of pollutants because of their large specific surface area. As an environmentally friendly natural polysaccharide, cellulose is a good candidate for the preparation of aerogels due to its wide sources and abundant polar groups. In this paper, an approach to construct cellulose nanofibers aerogels with both the good mechanical property and the high pollutants adsorption capability through chemical crosslinking was explored. On this basis, TiO2 nanoparticles were loaded on the aerogel through the sol-gel method followed by the hydrothermal method, thereby the enriched pollutants in the aerogel could be degraded synchronously. The chemical cross-linker not only helps build the three-dimensional network structure of aerogels, but also provides loading sites for TiO2. The degradation efficiency of pollutants by the TiO2@CNF Aerogel can reach more than 90% after 4 h, and the efficiency is still more than 70% after five cycles. The prepared TiO2@CNF Aerogels have high potential in the field of environmental management, because of the high efficiency of treating organic pollutes and the sustainability of the materials. The work also provides a choice for the functional utilization of cellulose, offering a valuable method to utilize the large amount of cellulose in nature.

scholarly journals Cellulose Nanofibers: Elucidating the Opportunities and Challenges for Nanocellulose Spinning (Adv. Mater. 28/2021)

2021 ◽  
Vol 33 (28) ◽  
pp. 2170219
Author(s):  
Tomas Rosén ◽  
Benjamin S. Hsiao ◽  
L. Daniel Söderberg
Keyword(s):  
Cellulose Nanofibers
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