scholarly journals Preparation and Characterization of Dyed Corn Straw by Acid Red GR and Active Brilliant X-3B Dyes

Materials ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 3483 ◽  
Author(s):  
Li ◽  
Wang ◽  
Yang ◽  
Liu ◽  
Guo
Keyword(s):  
Corn Straw ◽  
Covalent Bonds ◽  
Dyeing Properties ◽  
Structure And Stability ◽  
Water Washing ◽  
Main Factors ◽  
Light Resistance ◽  
Dyeing Rate

Corn straw is a kind of biomass material with huge reserves, which can be used in plate processing, handicraft manufacturing, indoor decoration, and other fields. To investigate the dyeing mechanism of corn straw with different dyes, corn straw was pretreated and dyed with Acid Red GR and Brilliant Red X-3B. The dyeing properties and light resistance of the two dyes were analyzed by dyeing rate, photochromaticity, FTIR, SEM, and water-washing firmness. The results showed that the structure and stability of the dyes were the main factors which influenced fading. A bleaching pretreatment could remove the waxiness of the corn straw epidermis and increase the porosity on the surface of the straw, which accelerated the photochromic coloring of the corn straw skin. The corn straw dyed with both dyes had good light resistance, but the straw dyed with Reactive Brilliant Red X-3B had higher dyeing rate, brighter color, and higher photochromaticity than the straw dyed with Acid Red GR. FTIR and water-washing firmness showed that Acid Red GR mainly bound to lignin, while Reactive Brilliant Red X-3B mainly bound to cellulose, hemicellulose, and lignin in corn straw through covalent bonds, which increased the coloring rate.

Preparation and characterization of boron-doped corn straw biochar: Fe (Ⅱ) removal equilibrium and kinetics

2021 ◽  
Vol 106 ◽  
pp. 116-123
Author(s):  
Long Sui ◽  
Chunyu Tang ◽  
Qing Du ◽  
Ying Zhao ◽  
Kui Cheng ◽  
...  
Keyword(s):  
Corn Straw ◽  
Boron Doped ◽  
Equilibrium And Kinetics

scholarly journals Size-based characterization of adalimumab and TNF-α interactions using flow induced dispersion analysis: assessment of avidity-stabilized multiple bound species

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Morten E. Pedersen ◽  
Ragna M. S. Haegebaert ◽  
Jesper Østergaard ◽  
Henrik Jensen
Keyword(s):  
Protein Interactions ◽  
Free Ligand ◽  
Local Environment ◽  
Dispersion Analysis ◽  
Surface Immobilization ◽  
Covalent Bonds ◽  
Essential Information ◽  
Tnf Α

AbstractThe understanding and characterization of protein interactions is crucial for elucidation of complicated biomolecular processes as well as for the development of new biopharmaceutical therapies. Often, protein interactions involve multiple binding, avidity, oligomerization, and are dependent on the local environment. Current analytical methodologies are unable to provide a detailed mechanistic characterization considering all these parameters, since they often rely on surface immobilization, cannot measure under biorelevant conditions, or do not feature a structurally-related readout for indicating formation of multiple bound species. In this work, we report the use of flow induced dispersion analysis (FIDA) for in-solution characterization of complex protein interactions under in vivo like conditions. FIDA is an immobilization-free ligand binding methodology employing Taylor dispersion analysis for measuring the hydrodynamic radius (size) of biomolecular complexes. Here, the FIDA technology is utilized for a size-based characterization of the interaction between TNF-α and adalimumab. We report concentration-dependent complex sizes, binding affinities (Kd), kinetics, and higher order stoichiometries, thus providing essential information on the TNF-α–adalimumab binding mechanism. Furthermore, it is shown that the avidity stabilized complexes involving formation of multiple non-covalent bonds are formed on a longer timescale than the primary complexes formed in a simple 1 to 1 binding event.

Characterization of Structure and Stability of Long Telomeric DNA G-Quadruplexes

2006 ◽  
Vol 128 (48) ◽  
pp. 15461-15468 ◽  
Author(s):  
Hai-Qing Yu ◽  
Daisuke Miyoshi ◽  
Naoki Sugimoto
Keyword(s):  
Telomeric Dna ◽  
Structure And Stability

The Use of Sol-Gel Method for Obtaining Fire-Resistant Elastic Coatings on Cotton Fabrics

2021 ◽  
Vol 1038 ◽  
pp. 468-479
Author(s):  
Olga Skorodumova ◽  
Olena Tarakhno ◽  
Olena Chebotaryova ◽  
Oleg Bezuglov ◽  
Fatih Mehmet Emen
Keyword(s):  
Thin Layer ◽  
Fire Protection ◽  
Sol Gel ◽  
Fire Retardant ◽  
Cotton Fabrics ◽  
Covalent Bonds ◽  
Silica Coatings ◽  
Factors Influencing ◽  
Fire Retardant Properties ◽  
Main Factors

Based on the generalization of research results on the processes of obtaining SiO2 sols using tetraethoxysilane and ethyl silicates, the main factors influencing the elasticity of silica coatings on cotton fabrics and their fire-retardant properties are considered. The possibility of forming covalent bonds between the functional groups of cellulose, gel coating and flame retardant layer is considered, which explains the strong fixation of a thin layer of coating on the fibers of the fabric and improve its fire protection. The use of the developed compositions for fire-retardant elastic coatings based on ethyl silicate allows to increase the time of complete burning of cotton from 30s (untreated fabric) to 600s (treated with binary coating).

scholarly journals Development and Characterization of Teflon-Copper Composite Material

2018 ◽  
Vol 778 ◽  
pp. 225-229
Author(s):  
Imran Hamid ◽  
Abdul Rauf ◽  
Faisal Nasim ◽  
Muhammad Siddique ◽  
Adnan Gul
Keyword(s):  
Composite Material ◽  
Hot Isostatic Pressing ◽  
Solid Lubricants ◽  
Powder Metallurgy Technique ◽  
Covalent Bonds ◽  
Secondary Bonds ◽  
Three Samples ◽  
Commercial Applications ◽  
Copper Composite

Composites are the combination of materials that are mixed together to achieve specific structural properties. Teflon (Polytetrafluoroethylene PTFE) consists of long-chain molecular structure. Its monomer consists of two carbon atoms each of them having flourine atoms attached. Bonds within each chain are strong covalent bonds where as the secondary bonds between two chains are weaker. By raising temperature, the distance between the chains increases providing good adjustment of the atoms of other materials due to anisotropy of its mechanical properties. Powder metallurgy technique using hot isostatic pressing, a hybrid densification process in which pressure and temperature are applied at the same time, has been used to develop a teflon-copper composite material. Three samples were prepared by changing the teflon-copper composition as 60:40%, 65:35% and 70:30% by weight. Commercially available powders of teflon and copper of grain size ~ 40 μm was used. The aim to develop this type of material was to increase its density (~ 4 g/cm3), and hardness. The commercial applications of such type of composite material are solid lubricants, sleeves, bearings etc. In this paper the effect of composition on hardness, tensile strength and surface roughness is studied.

Separation and characterization of cellulose I material from corn straw by low-cost polyhydric protic ionic liquids

Cellulose ◽  
2018 ◽  
Vol 25 (6) ◽  
pp. 3241-3254 ◽  
Author(s):  
Shaoqi Yang ◽  
Xingmei Lu ◽  
Yaqin Zhang ◽  
Junli Xu ◽  
Jiayu Xin ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Low Cost ◽  
Cellulose I ◽  
Corn Straw ◽  
Protic Ionic Liquids

Molecular characterization of bacterial and archaeal communities in a full-scale anaerobic reactor treating corn straw

2013 ◽  
Vol 143 ◽  
pp. 512-518 ◽  
Author(s):  
Jiang-Tao Qiao ◽  
Yan-Ling Qiu ◽  
Xian-Zheng Yuan ◽  
Xiao-Shuang Shi ◽  
Xiao-Hui Xu ◽  
...  
Keyword(s):  
Molecular Characterization ◽  
Full Scale ◽  
Corn Straw ◽  
Anaerobic Reactor ◽  
Bacterial And Archaeal Communities ◽  
Archaeal Communities

Synthesis and characterization of valproic acid ester pro-drug micelles via an amphiphilic polycaprolactone block copolymer design

2015 ◽  
Vol 6 (13) ◽  
pp. 2386-2389 ◽  
Author(s):  
Suchithra A. Senevirathne ◽  
Suthida Boonsith ◽  
David Oupicky ◽  
Michael C. Biewer ◽  
Mihaela C. Stefan
Keyword(s):  
Valproic Acid ◽  
Block Copolymer ◽  
Block Copolymers ◽  
Histone Deacetylase ◽  
Hdac Inhibitors ◽  
Research Direction ◽  
Synthesis And Characterization ◽  
Covalent Bonds ◽  
New Research

The attachment of Histone deacetylase (HDAC) inhibitors via covalent bonds to biocompatible and biodegradable block copolymers provides a new research direction for cancer treatment.

Sign in / Sign up

Export Citation Format

Share Document