Production and Characterization of Cellulose Nanofibrils from Different Chemical and Mechanical Pulps

2018 ◽  
Vol 38 (2) ◽  
pp. 149-158 ◽  
Author(s):  
Ming He ◽  
Guihua Yang ◽  
Jiachuan Chen ◽  
Xingxiang Ji ◽  
Qiang Wang
Keyword(s):  
Cellulose Nanofibrils ◽  
Mechanical Pulps

Preparation and characterization of tannin-based adhesives reinforced with cellulose nanofibrils for wood bonding

Holzforschung ◽  
2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Uasmim Lira Zidanes ◽  
Matheus Cordazzo Dias ◽  
Mário Sérgio Lorenço ◽  
Elesandra da Silva Araujo ◽  
Maryella Júnnia Ferreira e Silva ◽  
...  
Keyword(s):  
Cellulose Nanofibrils ◽  
Glue Line ◽  
Mechanical Resistance ◽  
Thermogravimetric Analyses ◽  
Humidity Resistance ◽  
Wood Bonding ◽  
Toona Ciliata ◽  
Solids Content ◽  
The One

AbstractAdhesives based on vegetable tannins are already a reality in the market. However, their use is still limited due to their low mechanical resistance and weak humidity resistance. Cellulose nanofibrils (CNFs) are being used as reinforcing materials in various composites, resulting in an improvement of mechanical proprieties in general. The objective of this work was to evaluate the incorporation of CNFs in adhesives made of tannins obtained from the Angico tree (Anadenanthera peregrine). Concentrations of nanofibrils at 1, 5, and 10% were added to the adhesives on a dry basis. Tests of viscosity, pH, solids content, and gel time were performed to determine the physical proprieties of the adhesives. The Attenuated Total Reflectance Fourier Transform Infrared Spectroscopy (ATR-FTIR) and Raman spectra measurements were also determined to understand the interaction between tannins and CNFs. Thermogravimetric analyses (TGA) were carried out to determine the thermal resistance of the composite. The FTIR and Raman characterization identified some differences in the peaks in the chemical composition of the adhesives with different percentages of CNFs. The adhesives showed no different decomposition in the thermogravimetric analyses. The shear strength in the glue line of the adhesive with 5% of CNFs in Toona ciliata woods was determined. Among all the adhesives analyzed, the one with 5% of CNFs produced an improvement in the mechanical resistance and humidity resistance on the glue line.

Isolation and characterization of cellulose nanofibrils from arecanut husk fibre

2016 ◽  
Vol 142 ◽  
pp. 158-166 ◽  
Author(s):  
Julie Chandra C.S. ◽  
Neena George ◽  
Sunil K. Narayanankutty
Keyword(s):  
Cellulose Nanofibrils ◽  
Isolation And Characterization

Fabrication and characterization of metakaolin-based geopolymer composites reinforced with cellulose nanofibrils

2021 ◽  
pp. 131146
Author(s):  
Georgy Lazorenko ◽  
Anton Kasprzhitskii ◽  
Vasilii Mischinenko ◽  
Alexander Kruglikov
Keyword(s):  
Cellulose Nanofibrils ◽  
Fabrication And Characterization ◽  
Geopolymer Composites

Isolation and characterization of cellulose nanofibrils from Helicteres isora plant

2014 ◽  
Vol 59 ◽  
pp. 27-34 ◽  
Author(s):  
Cintil Jose Chirayil ◽  
Jithin Joy ◽  
Lovely Mathew ◽  
Miran Mozetic ◽  
Joachim Koetz ◽  
...  
Keyword(s):  
Cellulose Nanofibrils ◽  
Isolation And Characterization ◽  
Helicteres Isora

scholarly journals Cellulose-Cyclodextrin Co-Polymer for the Removal of Cyanotoxins on Water Sources

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 2075
Author(s):  
Diego Gomez-Maldonado ◽  
Iris Beatriz Vega Erramuspe ◽  
Ilari Filpponen ◽  
Leena-Sisko Johansson ◽  
Salvatore Lombardo ◽  
...  
Keyword(s):  
Photoelectron Spectroscopy ◽  
Cellulose Nanofibrils ◽  
Human Consumption ◽  
Nutrient Runoff ◽  
Force Microscopy ◽  
Atomic Force ◽  
Safe Limits ◽  
Ft Ir ◽  
Recreational Use

With increasing global water temperatures and nutrient runoff in recent decades, the blooming season of algae lasts longer, resulting in toxin concentrations that exceed safe limits for human consumption and for recreational use. From the different toxins, microcystin-LR has been reported as the main cyanotoxin related to liver cancer, and consequently its abundance in water is constantly monitored. In this work, we report a methodology for decorating cellulose nanofibrils with β-cyclodextrin or with poly(β-cyclodextrin) which were tested for the recovery of microcystin from synthetic water. The adsorption was followed by Quartz Crystal Microbalance with Dissipation monitoring (QCM-D), allowing for real-time monitoring of the adsorption behavior. A maximum recovery of 196 mg/g was obtained with the modified by cyclodextrin. Characterization of the modified substrate was confirmed with Fourier Transform Infrared Spectroscopy (FT-IR), X-ray Photoelectron Spectroscopy (XPS), Thermogravimetric Analysis (TGA), and Atomic Force Microscopy (AFM).

Fabrication and characterization of cellulose nanofibrils/epoxy nanocomposite foam

2017 ◽  
Vol 53 (7) ◽  
pp. 4949-4960 ◽  
Author(s):  
Jinghao Li ◽  
Liqing Wei ◽  
Weiqi Leng ◽  
John F. Hunt ◽  
Zhiyong Cai
Keyword(s):  
Cellulose Nanofibrils ◽  
Epoxy Nanocomposite ◽  
Nanocomposite Foam ◽  
Fabrication And Characterization
Sign in / Sign up

Export Citation Format

Share Document