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.

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 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.

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.

Transparent, ultraflexible, and superinsulating nanofibrous biocomposite aerogels via ambient pressure drying

2021 ◽  
Author(s):  
Guoqing Zu ◽  
Sheng Zeng ◽  
Ben Yang ◽  
Jia Huang
Keyword(s):  
Ambient Pressure ◽  
Ambient Pressure Drying ◽  
Oxidized Starch ◽  
Nanofibrous Structure ◽  
First Time ◽  
Highly Porous

We report transparent, flexible, and superinsulating biocomposite aerogels with a homogeneous, highly porous, and nanofibrous structure based on oxidized starch and polyorganosiloxane via facile ambient pressure drying for the first time.

Microporous carbon aerogel prepared through ambient pressure drying route as anode material for lithium ion cells

2017 ◽  
Vol 28 (12) ◽  
pp. 1945-1950 ◽  
Author(s):  
Ancy Smitha Alex ◽  
Ananda Lekshmi M.S. ◽  
Sekkar V. ◽  
Bibin John ◽  
Gouri C. ◽  
...  
Keyword(s):  
Anode Material ◽  
Ambient Pressure ◽  
Lithium Ion ◽  
Carbon Aerogel ◽  
Ambient Pressure Drying ◽  
Microporous Carbon ◽  
Lithium Ion Cells

Preparation of mesoporous crack-free Sb-SnO2 xerogels through ambient-pressure drying and its application as three-dimensional electrode

2018 ◽  
Vol 86 (2) ◽  
pp. 479-492 ◽  
Author(s):  
Siqi Liu ◽  
Xiezhen Zhou ◽  
Weiqing Han ◽  
Jiansheng Li ◽  
Xiuyun Sun ◽  
...  
Keyword(s):  
Ambient Pressure ◽  
Three Dimensional ◽  
Ambient Pressure Drying

The Microwave-Assisted Preparation and Properties of SiO2 Aerogels by Fractional Modification

2010 ◽  
Vol 148-149 ◽  
pp. 1152-1162 ◽  
Author(s):  
Wen Zhi Zheng ◽  
Li Chen ◽  
Xiang Hua Huang ◽  
Lei Fu
Keyword(s):  
Ambient Pressure ◽  
Sol Gel ◽  
Ambient Pressure Drying ◽  
Base Catalysis ◽  
Raw Material ◽  
Microwave Method ◽  
Scanning Calorimetry ◽  
Hydrophobic Sio2 ◽  
Water Bath Heating ◽  
Fractional Modification

Under microwave radiation and using trimethyl chlorosilane as modifier, hydrophobic SiO2 aerogel was prepared through fractional hydrophobic modification and ambient pressure drying of the raw material, tetraethoxysilane (TEOS), in the process of sol-gel and acid-base catalysis. Hydrophilic SiO2 aerogels were also prepared using the microwave method and water bath heating method. The SiO2 aerogels prepared using the three methods, including their morphology and chemical composition, were analyzed and compared using scanning electron microscopy, Brunauer-Emmett-Teller analysis method, Fourier transform infrared spectroscopy, X-ray diffraction, and themogravimetric-differential scanning calorimetry. The results indicate that by adopting the microwave reaction, the specific surface area of the SiO2 aerogels was effectively increased and the structure of the internal nanoscale pores of petal-coated shape was found to exist under the dense external surface of the SiO2 aerogels. Thermal stability of the hydrophobic SiO2 aerogels prepared through fractional modification assisted by the microwave method was increased with the hydrophobic angle at153°, which showed super hydrophobicity.

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