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

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 Influence of biological origin on the tensile properties of cellulose nanopapers

Cellulose ◽  
2021 ◽  
Author(s):  
Katri S. Kontturi ◽  
Koon-Yang Lee ◽  
Mitchell P. Jones ◽  
William W. Sampson ◽  
Alexander Bismarck ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Cell Wall ◽  
Bacterial Cellulose ◽  
Raw Materials ◽  
Cellulose Nanofibers ◽  
Nanofibrillated Cellulose ◽  
Primary Cell Wall ◽  
Biological Origin ◽  
Basic Principles ◽  
Fiber Mats

Abstract Cellulose nanopapers provide diverse, strong and lightweight templates prepared entirely from sustainable raw materials, cellulose nanofibers (CNFs). Yet the strength of CNFs has not been fully capitalized in the resulting nanopapers and the relative influence of CNF strength, their bonding, and biological origin to nanopaper strength are unknown. Here, we show that basic principles from paper physics can be applied to CNF nanopapers to illuminate those relationships. Importantly, it appeared that ~ 200 MPa was the theoretical maximum for nanopapers with random fibril orientation. Furthermore, we demonstrate the contrast in tensile strength for nanopapers prepared from bacterial cellulose (BC) and wood-based nanofibrillated cellulose (NFC). Endemic amorphous polysaccharides (hemicelluloses) in NFC act as matrix in NFC nanopapers, strengthening the bonding between CNFs just like it improves the bonding between CNFs in the primary cell wall of plants. The conclusions apply to all composites containing non-woven fiber mats as reinforcement. Graphic abstract

Cellulose nanofibers from banana rachis added to a Curcuma longa L. rhizome suspension: Color, stability and rheological properties

2021 ◽  
Vol 27 ◽  
pp. 100180
Author(s):  
A.M. Serpa Guerra ◽  
C. Gómez Hoyos ◽  
J.A. Velásquez-Cock ◽  
P. Gañán Rojo ◽  
A. Eceiza ◽  
...  
Keyword(s):  
Rheological Properties ◽  
Curcuma Longa ◽  
Cellulose Nanofibers ◽  
Color Stability

scholarly journals Shear-Induced and Nanofiber-Nucleated Crystallization of Novel Aliphatic–Aromatic Copolyesters Delineated for In Situ Generation of Biodegradable Nanocomposites

Polymers ◽  
2021 ◽  
Vol 13 (14) ◽  
pp. 2315
Author(s):  
Ramin Hosseinnezhad
Keyword(s):  
Shear Rate ◽  
Cooling Rate ◽  
Isothermal Crystallization ◽  
Cellulose Nanofibers ◽  
Crystallization Time ◽  
Nucleation Density ◽  
Shear Rates ◽  
Biodegradable Nanocomposites ◽  
In Situ Generation

The shear-induced and cellulose-nanofiber nucleated crystallization of two novel aliphatic–aromatic copolyesters is outlined due to its significance for the in situ generation of biodegradable nanocomposites, which require the crystallization of nanofibrous sheared inclusions at higher temperatures. The shear-induced non-isothermal crystallization of two copolyesters, namely, poly(butylene adipate-co-succinate-co-glutarate-co-terephthalate) (PBASGT) and poly(butylene adipate-co-terephthalate) (PBAT), was studied following a light depolarization technique. To have a deep insight into the process, the effects of the shear rate, shear time, shearing temperature and cooling rate on the initiation, kinetics, growth and termination of crystals were investigated. Films of 60 μm were subjected to various shear rates (100–800 s−1) for different time intervals during cooling. The effects of the shearing time and increasing the shear rate were found to be an elevated crystallization temperature, increased nucleation density, reduced growth size of lamella stacks and decreased crystallization time. Due to the boosted nucleation sites, the nuclei impinged with each other quickly and growth was hindered. The effect of the cooling rate was more significant at lower shear rates. Shearing the samples at lower temperatures, but still above the nominal melting point, further shifted the non-isothermal crystallization to higher temperatures. As a result of cellulose nanofibers’ presence, the crystallization of PBAT, analyzed by DSC, was shifted to higher temperatures.

Structuring Pickering Emulsion Interfaces with Bilayered Coacervates of Cellulose Nanofibers and Hectorite Nanoplatelets

Langmuir ◽  
2021 ◽  
Vol 37 (13) ◽  
pp. 3828-3835
Author(s):  
Yeong Sik Cho ◽  
Sung Ho Lee ◽  
Hye Min Seo ◽  
Kyounghee Shin ◽  
Min Ho Kang ◽  
...  
Keyword(s):  
Cellulose Nanofibers ◽  
Pickering Emulsion

scholarly journals Fused sphere carbon monoliths with honeycomb-like porosity from cellulose nanofibers for oil and water separation

RSC Advances ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 2202-2212
Author(s):  
Mark Adam Ferry ◽  
Jun Maruyama ◽  
Taka-Aki Asoh ◽  
Hiroshi Uyama
Keyword(s):  
Natural Resources ◽  
Surface Structure ◽  
Carbon Materials ◽  
Cellulose Nanofibers ◽  
Water Separation

Carbon monoliths with a unique hierarchical surface structure from carbonized cellulose nanofibers were synthesized in pursuit of developing carbon materials from sustainable natural resources.

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