Butylamino-functionalized cellulose nanocrystal films: barrier properties and mechanical strength

RSC Advances ◽  
2015 ◽  
Vol 5 (20) ◽  
pp. 15140-15146 ◽  
Author(s):  
Miikka Visanko ◽  
Henrikki Liimatainen ◽  
Juho Antti Sirviö ◽  
Kirsi S. Mikkonen ◽  
Maija Tenkanen ◽  
...  
Keyword(s):  
Mechanical Strength ◽  
Cellulose Nanocrystals ◽  
Barrier Properties ◽  
Cellulose Nanocrystal ◽  
Barrier Performance ◽  
Nanocrystal Films

Self-standing films were fabricated from butylamino-functionalized cellulose nanocrystals and tested for their mechanical strength and barrier performance.

scholarly journals Cellulose Nanocrystals: Mind the Microgap in Iridescent Cellulose Nanocrystal Films (Adv. Mater. 2/2017)

2017 ◽  
Vol 29 (2) ◽  
Author(s):  
Susete N. Fernandes ◽  
Pedro L. Almeida ◽  
Nuno Monge ◽  
Luis E. Aguirre ◽  
Dennys Reis ◽  
...  
Keyword(s):  
Cellulose Nanocrystals ◽  
Cellulose Nanocrystal ◽  
Nanocrystal Films

scholarly journals Graphene/cellulose nanocrystals hybrid aerogel with tunable mechanical strength and hydrophilicity fabricated by ambient pressure drying technique

RSC Advances ◽  
2017 ◽  
Vol 7 (27) ◽  
pp. 16467-16473 ◽  
Author(s):  
Xiaofang Zhang ◽  
Ping Liu ◽  
Yongxin Duan ◽  
Min Jiang ◽  
Jianming Zhang
Keyword(s):  
Mechanical Strength ◽  
Cellulose Nanocrystals ◽  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Cellulose Nanocrystal ◽  
Hybrid Aerogel

An amphiphilic graphene/cellulose nanocrystal hybrid aerogel with tunable mechanical strength was fabricated by a facile ambient pressure drying technique.

scholarly journals Sodium alginate/cellulose nanocrystal fibers with enhanced mechanical strength prepared by wet spinning

2019 ◽  
Vol 14 ◽  
pp. 155892501984755
Author(s):  
Jie Liu ◽  
Rui Zhang ◽  
Meiyu Ci ◽  
Shuying Sui ◽  
Ping Zhu
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Mechanical Strength ◽  
Sodium Alginate ◽  
Cellulose Nanocrystals ◽  
Cellulose Nanocrystal ◽  
Wet Spinning ◽  
Transmission Electron ◽  
Alginate Fibers ◽  
Scanning Electron

Sodium alginate/cellulose nanocrystal fibers were prepared using a wet spinning method to enhance the mechanical strength of sodium alginate fibers. Cellulose nanocrystals were prepared by sulfuric acid hydrolysis method. The particle diameter size was measured, and the morphology of cellulose nanocrystals was characterized by transmission electron microscopy and scanning electron microscopy. The structure and mechanical properties of sodium alginate/cellulose nanocrystal fibers were characterized by scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and mechanical strength testing. The incorporation of cellulose nanocrystals significantly improved the strength of alginate fibers because of the uniform distribution of cellulose nanocrystals in the alginate matrix. The tensile strength and elongation at break of the alginate fibers increased from 1.54 to 2.05 cN/dtex and from 8.29% to 15.05% with increasing cellulose nanocrystals content from 0 to 2 wt%, respectively.

Reactive Extrusion of Polylactic Acid/Cellulose Nanocrystal Films for Food Packaging Applications: Influence of Filler Type on Thermomechanical, Rheological, and Barrier Properties

2017 ◽  
Vol 56 (16) ◽  
pp. 4718-4735 ◽  
Author(s):  
Prodyut Dhar ◽  
Surendra Singh Gaur ◽  
Narendren Soundararajan ◽  
Arvind Gupta ◽  
Siddharth Mohan Bhasney ◽  
...  
Keyword(s):  
Polylactic Acid ◽  
Food Packaging ◽  
Barrier Properties ◽  
Reactive Extrusion ◽  
Cellulose Nanocrystal ◽  
Nanocrystal Films

Optically Ambidextrous Reflection and Luminescence in Self-Organized Left-Handed Chiral Nematic Cellulose Nanocrystal Films

CCS Chemistry ◽  
2020 ◽  
pp. 932-945
Author(s):  
Jiawei Tao ◽  
Chen Zou ◽  
Haijing Jiang ◽  
Mei Li ◽  
Di Lu ◽  
...  
Keyword(s):  
Cellulose Nanocrystal ◽  
Self Organized ◽  
Left Handed ◽  
Chiral Nematic ◽  
Nanocrystal Films

scholarly journals Designing Biodegradable and Active Multilayer System by Assembling an Electrospun Polycaprolactone Mat Containing Quercetin and Nanocellulose between Polylactic Acid Films

Polymers ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1288
Author(s):  
Carol López de Dicastillo ◽  
Luan Garrido ◽  
Eliezer Velásquez ◽  
Adrián Rojas ◽  
Rafael Gavara
Keyword(s):  
Antioxidant Activity ◽  
Thermal Treatment ◽  
Polylactic Acid ◽  
Active Compound ◽  
Cellulose Nanocrystals ◽  
Barrier Properties ◽  
Electrospinning Process ◽  
Multilayer Systems ◽  
Innovative Strategy ◽  
Packaged Foods

The design of multilayer systems is an innovative strategy to improve physical properties of biodegradable polymers and introduce functionality to the materials through the incorporation of an active compound into some of these layers. In this work, a trilayer film based on a sandwich of electrospun polycaprolactone (PCL) fibers (PCLé) containing quercetin (Q) and cellulose nanocrystals (CNC) between extruded polylactic acid (PLA) films was designed with the purpose of improving thermal and barrier properties and affording antioxidant activity to packaged foods. PCLé was successfully electrospun onto 70 µm-thick extruded PLA film followed by the assembling of a third 25 µm-thick commercial PLA film through hot pressing. Optical, morphological, thermal, and barrier properties were evaluated in order to study the effect of PCL layer and the addition of Q and CNC. Bilayer systems obtained after the electrospinning process of PCL onto PLA film were also evaluated. The release of quercetin from bi- and trilayer films to food simulants was also analyzed. Results evidenced that thermal treatment during thermo-compression melted PCL polymer and resulted in trilayer systems with barrier properties similar to single PLA film. Quercetin release from bi- and trilayer films followed a similar profile, but achieved highest value through the addition of CNC.

scholarly journals Concentric chiral nematic polymeric fibers from cellulose nanocrystals

2021 ◽  
Author(s):  
Arash Momeni ◽  
Christopher M. Walters ◽  
Yi-Tao Xu ◽  
Wadood Y. Hamad ◽  
Mark J. MacLachlan
Keyword(s):  
Cellulose Nanocrystals ◽  
Liquid Crystalline ◽  
Capillary Tube ◽  
Single Domain ◽  
Cellulose Nanocrystal ◽  
Polymeric Fibers ◽  
Chiral Nematic ◽  
Chiral Nematic Structure ◽  
Crystalline Suspension

A cellulose nanocrystal liquid crystalline suspension was mixed with monomers and confined to a capillary tube. After photopolymerization, a fiber with a single-domain concentric chiral nematic structure throughout the length of the fiber was obtained.

Biomimetic Optical Cellulose Nanocrystal Films with Controllable Iridescent Color and Environmental Stimuli-Responsive Chromism

2018 ◽  
Vol 10 (6) ◽  
pp. 5805-5811 ◽  
Author(s):  
Yao-Dong He ◽  
Ze-Lian Zhang ◽  
Juan Xue ◽  
Xiao-Hui Wang ◽  
Fei Song ◽  
...  
Keyword(s):  
Cellulose Nanocrystal ◽  
Stimuli Responsive ◽  
Environmental Stimuli ◽  
Nanocrystal Films

Solid-state 23Na NMR spectroscopy studies of ordered and disordered cellulose nanocrystal films

2019 ◽  
Vol 97 ◽  
pp. 31-39 ◽  
Author(s):  
Ryutaro Ohashi ◽  
Carl A. Michal ◽  
Wadood Y. Hamad ◽  
Thanh-Dinh Nguyen ◽  
Motohiro Mizuno ◽  
...  
Keyword(s):  
Solid State ◽  
Nmr Spectroscopy ◽  
Cellulose Nanocrystal ◽  
Nanocrystal Films ◽  
Spectroscopy Studies ◽  
23Na Nmr
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