Morphological, Thermal, Mechanical, and Optical Properties of Hybrid Nanocellulose Film Containing Cellulose Nanofiber and Cellulose Nanocrystals

2021 ◽  
Author(s):  
Can Hu ◽  
Yueyun Zhou ◽  
Ting Zhang ◽  
Taijun Jiang ◽  
Cong Meng ◽  
...  
Keyword(s):  
Optical Properties ◽  
Cellulose Nanocrystals ◽  
Cellulose Nanofiber ◽  
Nanocellulose Film

Optical properties of nanocellulose film and its applications

2021 ◽  
Author(s):  
Jaehwan Kim ◽  
Dickens O. Agumba ◽  
Hyun Chan Kim ◽  
Pham Duc Hoa
Keyword(s):  
Optical Properties ◽  
Nanocellulose Film

scholarly journals Strategies to Improve the Properties of Amaranth Protein Isolate-Based Thin Films for Food Packaging Applications: Nano-Layering through Spin-Coating and Incorporation of Cellulose Nanocrystals

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2564
Author(s):  
Amparo López-Rubio ◽  
Adriana Blanco-Padilla ◽  
Kristiina Oksman ◽  
Sandra Mendoza
Keyword(s):  
Contact Angle ◽  
Optical Properties ◽  
Cellulose Nanocrystals ◽  
Spin Coating ◽  
Food Packaging ◽  
Water Solubility ◽  
Protein Isolate ◽  
Water Soluble ◽  
Water Contact ◽  
Angle Measurements

In this work, two different strategies for the development of amaranth protein isolate (API)-based films were evaluated. In the first strategy, ultrathin films were produced through spin-coating nanolayering, and the effects of protein concentration in the spin coating solution, rotational speed, and number of layers deposited on the properties of the films were evaluated. In the second strategy, cellulose nanocrystals (CNCs) were incorporated through a casting methodology. The morphology, optical properties, and moisture affinity of the films (water contact angle, solubility, water content) were characterized. Both strategies resulted in homogeneous films with good optical properties, decreased hydrophilic character (as deduced from the contact angle measurements and solubility), and improved mechanical properties when compared with the neat API-films. However, both the processing method and film thickness influenced the final properties of the films, being the ones processed through spin coating more transparent, less hydrophilic, and less water-soluble. Incorporation of CNCs above 10% increased hydrophobicity, decreasing the water solubility of the API films and significantly enhancing material toughness.

Ultrasensitive Magnetic Tuning of Optical Properties of Films of Cholesteric Cellulose Nanocrystals

ACS Nano ◽  
2020 ◽  
Vol 14 (8) ◽  
pp. 9440-9448 ◽  
Author(s):  
Tianxing Chen ◽  
Qinglan Zhao ◽  
Xin Meng ◽  
Yao Li ◽  
Hui Peng ◽  
...  
Keyword(s):  
Optical Properties ◽  
Cellulose Nanocrystals ◽  
Magnetic Tuning

scholarly journals Mechanical and Optical Properties of Polylactic Acid Films Containing Surfactant-Modified Cellulose Nanocrystals

2018 ◽  
Vol 2018 ◽  
pp. 1-12 ◽  
Author(s):  
Jose Luis Orellana ◽  
Derek Wichhart ◽  
Christopher L. Kitchens
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Optical Properties ◽  
Polylactic Acid ◽  
Cellulose Nanocrystals ◽  
Cetyltrimethylammonium Bromide ◽  
Polymeric Matrices ◽  
Nanoscale Structure ◽  
Surface Modified ◽  
Modified Cellulose

The addition of surface-modified cellulose nanocrystals (CNCs) to polymeric matrices can lead to an enhancement of the mechanical and optical properties of host polymers. The use of surfactants can provide an easy and effective way to change the CNC functionality and to evaluate the effects of surface chemistry in the reinforcement mechanisms. In this work, CNCs were solution blended with polylactic acid (PLA) and melt extruded into films. The PLA toughness increased from 1.70 MJ/m3to 2.74 MJ/m3, a 61% increase, with the addition of 1% of decylamine-modified CNCs without a decrease of the tensile strength or modulus. In this work, we investigated the use of two surfactants, decylamine and cetyltrimethylammonium bromide, to enhance CNC compatibility with the hydrophobic PLA matrix. Decylamine at 1.0 wt.% with respect to CNC loading was found to significantly enhance CNC compatibility and property enhancement. The low concentration of surfactant is notable, as other works typically use significantly higher loadings for CNC incorporation and property enhancement. At high CNC concentrations, mechanical properties decreased but the aligned assembly of the CNCs provided intricate colors to the films when observed between crossed polars. The alignment and nanoscale structure of CNCs within the films play an important role in the properties obtained.

Well-aligned cellulose nanofiber-reinforced polyvinyl alcohol composite film: Mechanical and optical properties

2016 ◽  
Vol 140 ◽  
pp. 238-245 ◽  
Author(s):  
Jie Cai ◽  
Jingyao Chen ◽  
Qian Zhang ◽  
Miao Lei ◽  
Jingren He ◽  
...  
Keyword(s):  
Optical Properties ◽  
Polyvinyl Alcohol ◽  
Composite Film ◽  
Cellulose Nanofiber

Cellulose nanofiber-assisted dispersion of cellulose nanocrystals@polyaniline in water and its conductive films

RSC Advances ◽  
2016 ◽  
Vol 6 (12) ◽  
pp. 10168-10174 ◽  
Author(s):  
Shiqi Wang ◽  
Chun Wei ◽  
Yongyang Gong ◽  
Jian Lv ◽  
Chuanbai Yu ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Cellulose Nanocrystals ◽  
Cellulose Nanofibers ◽  
Environmentally Friendly ◽  
Cellulose Nanofiber ◽  
High Electrical Conductivity ◽  
Conductive Films

The cellulose nanofibers as an efficient and environmentally friendly dispersant have been proven to be an efficient way to disperse cellulose nanocrystals@polyaniline. The obtained film show high electrical conductivity.

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