Polyaniline-modified cellulose nanofibrils as reinforcement of a smart polyurethane

2010 ◽  
Vol 60 (5) ◽  
pp. 743-750 ◽  
Author(s):  
María L Auad ◽  
Tara Richardson ◽  
William J Orts ◽  
Eliton S Medeiros ◽  
Luiz HC Mattoso ◽  
...  
Keyword(s):  
Cellulose Nanofibrils ◽  
Modified Cellulose

Hairy cellulose nanocrystalloids: a novel class of nanocellulose

Nanoscale ◽  
2016 ◽  
Vol 8 (33) ◽  
pp. 15101-15114 ◽  
Author(s):  
Theo G. M. van de Ven ◽  
Amir Sheikhi
Keyword(s):  
Cellulose Nanofibrils ◽  
Building Blocks ◽  
Wood Fibers ◽  
Main Building ◽  
Chemically Treated ◽  
Modified Cellulose

Cellulose nanofibrils (left), the main building blocks of wood fibers, are chemically treated to fall apart from the amorphous regions and yield hairy nanocrystalline celluloses and modified cellulose biopolymers (right).

Recent advances in surface-modified cellulose nanofibrils

2019 ◽  
Vol 88 ◽  
pp. 241-264 ◽  
Author(s):  
Fleur Rol ◽  
Mohamed Naceur Belgacem ◽  
Alessandro Gandini ◽  
Julien Bras
Keyword(s):  
Cellulose Nanofibrils ◽  
Recent Advances ◽  
Surface Modified ◽  
Modified Cellulose

Nanocomposites of natural rubber and polyaniline-modified cellulose nanofibrils

2014 ◽  
Vol 117 (1) ◽  
pp. 387-392 ◽  
Author(s):  
M. J. Silva ◽  
A. O. Sanches ◽  
E. S. Medeiros ◽  
L. H. C. Mattoso ◽  
C. M. McMahan ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Cellulose Nanofibrils ◽  
Modified Cellulose

Facile preparation of nanofiller-paper using mixed office paper without deinking

TAPPI Journal ◽  
2015 ◽  
Vol 14 (3) ◽  
pp. 167-174 ◽  
Author(s):  
QIANQIAN WANG ◽  
J.Y. ZHU
Keyword(s):  
Cellulose Nanofibrils ◽  
Ash Content ◽  
Raw Material ◽  
Mechanical Grinding ◽  
Microscope Imaging ◽  
Facile Preparation ◽  
Electron Microscope Imaging ◽  
Thermal Stability Of ◽  
Scanning Electron ◽  
Office Paper

Mixed office paper (MOP) pulp without deinking with an ash content of 18.1 ± 1.5% was used as raw material to produce nanofiller-paper. The MOP pulp with filler was mechanically fibrillated using a laboratory stone grinder. Scanning electron microscope imaging revealed that the ground filler particles were wrapped by cellulose nanofibrils (CNFs), which substantially improved the incorporation of filler into the CNF matrix. Sheets made of this CNF matrix were densified due to improved bonding. Specific tensile strength and modulus of the nanofiller-paper with 60-min grinding reached 48.4 kN·m/kg and 8.1 MN·m/kg, respectively, approximately 250% and 200% of the respective values of the paper made of unground MOP pulp. Mechanical grinding duration did not affect the thermal stability of the nanofiller-paper.

An effective method for determining the retention and distribution of cellulose nanofibrils in paper handsheets by dye labeling

TAPPI Journal ◽  
2018 ◽  
Vol 17 (03) ◽  
pp. 157-164 ◽  
Author(s):  
Shengdan Wang ◽  
Wenhua Gao ◽  
Kefu Chen ◽  
Jinsong Zeng ◽  
Jun Xu ◽  
...  
Keyword(s):  
Correlation Coefficient ◽  
Congo Red ◽  
Kraft Pulp ◽  
Cellulose Nanofibrils ◽  
Standard Curve ◽  
Congo Red Dye ◽  
Mechanical Disintegration ◽  
Softwood Kraft Pulp ◽  
White Water ◽  
Red Dye

Cellulose nanofibrils (CNF) were prepared by cellulase in conjunction with mechanical disintegration from the bleached softwood kraft pulp and labelled by Congo red dye. The labelled CNF were used to investigate the retention and distribution of CNF in paper handsheets. The retention of the labelled CNF was obtained by measuring the absorbance of white water using an ultraviolet-visible spectrophotometer. The results showed that this method for measuring the retention was rapid, feasible, and sensitive, owing to the high correlation coefficient R2 (0.9993) of the standard curve. The labelled CNF showed even distribution in paper handsheets. The colorimetric values of paper handsheets were explored with a residual ink analyzer.

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