A physical cross-linking process of cellulose nanofibril gels with shear-controlled fibril orientation

Soft Matter ◽  
2013 ◽  
Vol 9 (6) ◽  
pp. 1852-1863 ◽  
Author(s):  
Andreas B. Fall ◽  
Stefan B. Lindström ◽  
Joris Sprakel ◽  
Lars Wågberg
Keyword(s):  
Cross Linking ◽  
Cellulose Nanofibril

Cellulose nanofibril/boron nitride nanosheet composites with enhanced energy density and thermal stability by interfibrillar cross-linking through Ca2+

2018 ◽  
Vol 6 (4) ◽  
pp. 1403-1411 ◽  
Author(s):  
Junwei Yang ◽  
Haian Xie ◽  
Hao Chen ◽  
Zhuqun Shi ◽  
Tao Wu ◽  
...  
Keyword(s):  
Energy Density ◽  
Breakdown Strength ◽  
Dielectric Materials ◽  
High Energy ◽  
High Energy Density ◽  
Cross Linking ◽  
Cellulose Nanofibril ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Boron Nitride Nanosheet

Flexible and eco-friendly dielectric materials with high energy density and breakdown strength have promising applications in energy storage devices.

Dual-porous cellulose nanofibril aerogels via modular drying and cross-linking

Nanoscale ◽  
2020 ◽  
Vol 12 (13) ◽  
pp. 7383-7394 ◽  
Author(s):  
Tingting Wu ◽  
Zhihui Zeng ◽  
Gilberto Siqueira ◽  
Kevin De France ◽  
Deeptanshu Sivaraman ◽  
...  
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Supercritical Drying ◽  
Cross Linking ◽  
Cellulose Nanofibril ◽  
Bet Specific Surface Area

Cellulose nanofibril (CNF) dual-porous aerogel with BET specific surface area up to 430 m2 g−1 was prepared via a modular process combining directional freeze-thawing (macro-pores, ca. 50–200 μm) and supercritical drying (meso-pores, ca. 2–50 nm).

Outstanding Synergies in Mechanical Properties of Bioinspired Cellulose Nanofibril Nanocomposites using Self-Cross-Linking Polyurethanes

2019 ◽  
Vol 1 (12) ◽  
pp. 3334-3342 ◽  
Author(s):  
Francisco Lossada ◽  
Dejin Jiao ◽  
Jiaqi Guo ◽  
Daniel Hoenders ◽  
Alexander Eckert ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cross Linking ◽  
Cellulose Nanofibril

The sol–gel transition of ultra-low solid content TEMPO-cellulose nanofibril/mixed-linkage β-glucan bionanocomposite gels

Soft Matter ◽  
2018 ◽  
Vol 14 (46) ◽  
pp. 9393-9401 ◽  
Author(s):  
Suvi Arola ◽  
Mahmoud Ansari ◽  
Antti Oksanen ◽  
Elias Retulainen ◽  
Savvas G. Hatzikiriakos ◽  
...  
Keyword(s):  
Plant Cell Wall ◽  
Sol Gel ◽  
Cellulose Nanofibrils ◽  
Solid Content ◽  
Cross Linking ◽  
Cell Wall Polysaccharide ◽  
Oxidized Cellulose ◽  
Cellulose Nanofibril ◽  
Sol Gel Transition ◽  
Gel Transition

Ultra-low solid content gels were prepared by physically cross-linking TEMPO-oxidized cellulose nanofibrils (TEMPO-CNF) with the plant-cell-wall polysaccharide, mixed-linkage β-glucan (MLG).

scholarly journals High wet-strength, thermally stable and transparent TEMPO-oxidized cellulose nanofibril film via cross-linking with poly-amide epichlorohydrin resin

RSC Advances ◽  
2017 ◽  
Vol 7 (50) ◽  
pp. 31567-31573 ◽  
Author(s):  
Weisheng Yang ◽  
Huiyang Bian ◽  
Liang Jiao ◽  
Weibing Wu ◽  
Yulin Deng ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Water Resistance ◽  
Cellulose Nanofibrils ◽  
Cross Linking ◽  
Oxidized Cellulose ◽  
Thermally Stable ◽  
Cellulose Nanofibril ◽  
Wet Strength

TEMPO-oxidized cellulose nanofibrils (TOCNs) films cross-linked with different dosages of polyamide epichlorohydrin resin (PAE) show a great water-resistance and thermal stability.

Influence of Calcium Ions on the Plant Cell Surface: Membrane Fusions and Conformational Changes

1974 ◽  
Vol 32 ◽  
pp. 154-155
Author(s):  
D. James Morré ◽  
Charles E. Bracker ◽  
William J. VanDerWoude
Keyword(s):  
Cell Wall ◽  
Cell Surface ◽  
Conformational Changes ◽  
Calcium Ions ◽  
Surface Membrane ◽  
Carboxyl Groups ◽  
Cross Linking ◽  
Ultrastructural Evidence ◽  
Glycine Max L ◽  
Wall Extensibility

Calcium ions in the concentration range 5-100 mM inhibit auxin-induced cell elongation and wall extensibility of plant stems. Inhibition of wall extensibility requires that the tissue be living; growth inhibition cannot be explained on the basis of cross-linking of carboxyl groups of cell wall uronides by calcium ions. In this study, ultrastructural evidence was sought for an interaction of calcium ions with some component other than the wall at the cell surface of soybean (Glycine max (L.) Merr.) hypocotyls.

Embedding Procedure for Water Swollen Samples

1970 ◽  
Vol 28 ◽  
pp. 504-505
Author(s):  
Ann M. Thomas ◽  
Virginia Shemeley
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Ion Exchange ◽  
Structural Changes ◽  
Cross Linking ◽  
Ion Exchange Resins ◽  
Transmission Electron ◽  
First Pass ◽  
Exchange Resins

Those samples which swell rapidly when exposed to water are, at best, difficult to section for transmission electron microscopy. Some materials literally burst out of the embedding block with the first pass by the knife, and even the most rapid cutting cycle produces sections of limited value. Many ion exchange resins swell in water; some undergo irreversible structural changes when dried. We developed our embedding procedure to handle this type of sample, but it should be applicable to many materials that present similar sectioning difficulties.The purpose of our embedding procedure is to build up a cross-linking network throughout the sample, while it is in a water swollen state. Our procedure was suggested to us by the work of Rosenberg, where he mentioned the formation of a tridimensional structure by the polymerization of the GMA biproduct, triglycol dimethacrylate.

The Current Situation in Chemical Stabilization of Biological Materials

1972 ◽  
Vol 30 ◽  
pp. 132-133
Author(s):  
John H. Luft
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Osmium Tetroxide ◽  
Molecular Level ◽  
Cross Linking ◽  
Chemical Stabilization ◽  
Specimen Preparation ◽  
Sufficient Condition ◽  
Radio Telescopes

With information processing devices such as radio telescopes, microscopes or hi-fi systems, the quality of the output often is limited by distortion or noise introduced at the input stage of the device. This analogy can be extended usefully to specimen preparation for the electron microscope; fixation, which initiates the processing sequence, is the single most important step and, unfortunately, is the least well understood. Although there is an abundance of fixation mixtures recommended in the light microscopy literature, osmium tetroxide and glutaraldehyde are favored for electron microscopy. These fixatives react vigorously with proteins at the molecular level. There is clear evidence for the cross-linking of proteins both by osmium tetroxide and glutaraldehyde and cross-linking may be a necessary if not sufficient condition to define fixatives as a class.

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