Nanotechnologies. Characterization of cellulose nanocrystals

2016 ◽  
Keyword(s):  
Cellulose Nanocrystals

Surface Chemistry and Characterization of Cellulose Nanocrystals

2018 ◽  
pp. 223-252 ◽  
Author(s):  
Samuel Eyley ◽  
Christina Schütz ◽  
Wim Thielemans
Keyword(s):  
Surface Chemistry ◽  
Cellulose Nanocrystals

The preparation and characterization of polyurethane reinforced with a low fraction of cellulose nanocrystals

2018 ◽  
Vol 125 ◽  
pp. 207-214 ◽  
Author(s):  
Xiaohua Kong ◽  
John Wolodko ◽  
Liyan Zhao ◽  
Jonathan M. Curtis
Keyword(s):  
Cellulose Nanocrystals

Preparation and characterization of cellulose nanocrystals via ultrasonication-assisted FeCl3-catalyzed hydrolysis

Cellulose ◽  
2014 ◽  
Vol 21 (5) ◽  
pp. 3497-3506 ◽  
Author(s):  
Qilin Lu ◽  
Lirong Tang ◽  
Fengcai Lin ◽  
Siqun Wang ◽  
Yandan Chen ◽  
...  
Keyword(s):  
Cellulose Nanocrystals

scholarly journals Characterization of Polyester Nanocomposites Reinforced with Conifer Fiber Cellulose Nanocrystals

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 2838
Author(s):  
Grazielle da Silva Maradini ◽  
Michel Picanço Oliveira ◽  
Gabriel Madeira da Silva Guanaes ◽  
Gabriel Zuqui Passamani ◽  
Lilian Gasparelli Carreira ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Unsaturated Polyester ◽  
Cost Effective ◽  
Bending Test ◽  
X Ray Diffraction ◽  
Xrd Pattern ◽  
Glass Fiber Composites ◽  
Superior Mechanical Properties ◽  
Polyester Matrix

The application of cellulose nanocrystal has lately been investigated as polymer composites reinforcement owing to favorable characteristics of biodegradability and cost effectiveness as well as superior mechanical properties. In the present work novel nanocomposites of unsaturated polyester matrix reinforced with low amount of 1, 2, and 3 wt% of cellulose nanocrystals obtained from conifer fiber (CNC) were characterized. The polyester matrix and nanocomposites were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD), bending test, and thermogravimetric analysis (TGA). The result showed that the addition of only 2 wt% CNC increased the nanocomposite flexural strength by 159%, the ductility by 500% and the toughness by 1420%. Fracture analyses by SEM revealed a uniform participation of the CNC in the polyester microstructure. The resistance to thermal degradation of the CNC reinforced nanocomposites was improved in more than 20 °C as compared to neat polyester. No significant changes were detected in the water absorptions and XRD pattern of the neat polyester with incorporations up to 3 wt% CNC. These results reveal that the 2 wt% CNC nanocomposite might be a promising more ductile, lightweight and cost-effective substitute for conventional glass fiber composites in engineering applications.

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