Exploring the science of thinking independently together: Faraday Discussion Volume 204 – Complex Molecular Surfaces and Interfaces, Sheffield, UK, July 2017

2017 ◽  
Vol 53 (94) ◽  
pp. 12601-12607
Author(s):  
M. Samperi ◽  
B. E. Hirsch ◽  
Y. A. Diaz Fernandez
Keyword(s):  
Surface Analysis ◽  
Research Topics ◽  
Molecular Surfaces ◽  
Chemical Surface ◽  
Surfaces And Interfaces ◽  
Fundamental Research ◽  
Physical And Chemical

This Faraday Discussion meeting brought together theoreticians and experimentalists from both physical and chemical backgrounds to discuss the relevant applied and fundamental research topics within the broader field of chemical surface analysis and characterization.

scholarly journals Use of modern methods of fibre surface modification to obtain the multifunctional properties of textile materials

2003 ◽  
Vol 57 (10) ◽  
pp. 491-499 ◽  
Author(s):  
Dragan Jocic ◽  
Petar Jovancic ◽  
Maja Radetic ◽  
Tatjana Topalovic ◽  
Zoran Petrovic
Keyword(s):  
Surface Modification ◽  
Surface Topography ◽  
Fibre Surface ◽  
Enzyme Treatment ◽  
Textile Fibre ◽  
Textile Materials ◽  
Chemical Surface ◽  
Angle Measurements ◽  
Physico Chemical ◽  
Physical And Chemical

The modern textile fibre treatments aim to obtain the required level of beneficial effect while attempting to confine the modification to the fibre surface. Recently, much attention has been focused on different physical methods of fibre surface modification, cold plasma treatment being considered as very useful. Moreover, there are efficient chemical methods available, such as peroxide, biopolymer and enzyme treatment. Some interesting combinations of these physical and chemical surface modification methods as means to modify fibre surface topography and thus controlling the surface-related properties of the fibre are presented in this paper. The properties obtained are discussed on the basis of the physico-chemical changes in the surface layer of the fibre, being assessed by wettability and contact angle measurements, as well as by FTIR-ATR and XPS analysis. The SEM and AFM technique are used to assess the changes in the fibre surface topography and to correlate these changes to the effectiveness, uniformity and severity of the textile fibre surface modification treatments.

scholarly journals Physical and Chemical Modifications of Plant Fibres for Reinforcement in Cementitious Composites

2019 ◽  
Vol 2019 ◽  
pp. 1-18 ◽  
Author(s):  
R. Ahmad ◽  
R. Hamid ◽  
S. A. Osman
Keyword(s):  
Mechanical Properties ◽  
Interfacial Adhesion ◽  
Moisture Absorption ◽  
Surface Modifications ◽  
Future Research ◽  
Cementitious Composites ◽  
Chemical Surface ◽  
Plant Fibre ◽  
Physical And Chemical ◽  
Fibre Matrix

This paper highlights the physical and chemical surface modifications of plant fibre (PF) for attaining suitable properties as reinforcements in cementitious composites. Untreated PF faces insufficient adhesion between the fibres and matrix due to high levels of moisture absorption and poor wettability. These conditions accelerate degradation of the fibre in the composite. It is also essential to reduce the risk of hydrophilic PF conditions with surface modification, to enhance the mechanical properties of the fibres. Fibres that undergo chemical and physical modifications had been proven to exhibit improved fibre-matrix interfacial adhesion in the composite and contribute to better composite mechanical properties. This paper also gives some recommendations for future research on chemical and physical modifications of PF.

scholarly journals RESEARCH OF THE SYNTHETIC, PHYSICAL AND CHEMICAL PROPERTIES OF 3-ALKYLSULFONYL-5-(CHINOLINE-2-YL, 2-HYDROXYCHINOLINE-4-YL)-4-R -2,4-DIHYDRO3N-1,2,4-TRIAZOLES 1

2016 ◽  
Vol 10 (1) ◽  
pp. 81
Author(s):  
Kaplaushenko Tm ◽  
Panasenko Oi ◽  
Kucheryavy Yu
Keyword(s):  
Biological Effects ◽  
Chemical Properties ◽  
Biological Action ◽  
Pharmacological Properties ◽  
Physical And Chemical Properties ◽  
Element Analysis ◽  
Fundamental Research ◽  
Physical And Chemical ◽  
And Chemical Properties

ABSTRACTObjective: Fundamental research in pharmacy and medicine have shown that drugs, which are based on nucleus of the 1,2,4-triazole, have a widerange of biological effects. Derivatives of this heterocyclic system have well-known Ukrainian clinicians and the world scientists due to its antifungal,antidepressant, anticancer, cardio- and hepatoprotective properties. The pharmacological activity of most organic compounds depends on severaldifferent factors, including bioavailability of the substance. Hence, it is very important to consider the results of the synthetic and biological researchesand established dependence of structure on the biological action when scientists model new molecules or improve pharmacological properties of anexisting structure. One of the important social and economic problems of the pharmaceutical industry is the implementation in practice of new drugsthat could compete with expensive imported drugs. In recent times, 1,2,4-triazole-3-thioderivatives take attention of compatriots and scientists offoreign countries who are working on finding bioactive compounds including heterocyclic systems. The structure, physical and chemical properties,pharmacological activities of 1,2,4-triazoles, and their 3-thioderivatives are understudied. Hence, the study of that will be actually and novelty formodern science. The main purpose of our research is synthesis of 3-alkylsulfonyl-5-(chinoline-2-yl, 2-hydroxychinoline-4-yl)-4-R-2,4-dihydro-3N1,2,4-triazoles,studyingof its physicaland chemical properties.Methods: The initial compounds have been synthesized previously using known in literature techniques. Oxidation of the sulfur atom of thesynthesized compounds to the hexavalent condition was carried out adding solution of hydrogen peroxide.Results: The structure of the obtained compounds was determined with the modern physical and chemical analysis methods: Element analysis,infrared-spectrophotometry, and their individuality with thin layer chromatography.Conclusions: Prospect of the further researches is determination of acute toxicity and next studying of pharmacological properties of the synthesizedcompounds.Keywords: 1,2,4-triazoles, Synthesis, Chemical properties, Chinoline.1 

SURFACE REACTIONS OF FERRITIC STEEL PARTICLES ATOMIZED WITH WATER OR MIXTURES OF WATER-ADDITIVE

1999 ◽  
Vol 06 (06) ◽  
pp. 1289-1298 ◽  
Author(s):  
J. L. ESTRADA ◽  
J. GODINEZ ◽  
H. HERRERA
Keyword(s):  
Oxide Layer ◽  
Surface Reactions ◽  
Experimental Tests ◽  
Surface Oxide ◽  
Surface Oxide Layer ◽  
X Ray Diffraction ◽  
Chemical Surface ◽  
Surfaces And Interfaces ◽  
Water Atomization ◽  
Steel Oxidation

The production of metallic powders has been a very important industrial activity for many years. In this work, the water or a mixture water-additive atomization process has been used. During the production of steel particles by water atomization these particles are coated with a surface oxide layer. With particles under these conditions it is very difficult to obtain final products with high mechanical properties, so that it is desirable to diminish the surface oxide as much as possible. Experimental tests to know if the use of additives as corrosion inhibitors, used to avoid steel oxidation at room temperature, could modify the properties of particles during the manufacture of an AISI C1115 steel by water atomization were carried out. In order to improve the knowledge of the chemical surface reactions, characterization of the powder surfaces and interfaces of metal matrix/oxide layer by means of Energy Dispersive Spectroscopy (EDS), Scanning Electron Microscopy (SEM), X-ray Diffraction and Auger Electron Spectroscopy (AES) was carried out.

scholarly journals Studies Regarding the Increase in Hydrophilicity of Some Textile Fabrics through Treatment by Cold Plasma and Grafting with Vinyl Monomers

2017 ◽  
Vol 7 (2) ◽  
pp. 123 ◽  
Author(s):  
Marcel Popa ◽  
Ana Irina Ecsner ◽  
Rodica Muresan ◽  
Emil Muresan ◽  
Emil Ghiocel Ioanid ◽  
...  
Keyword(s):  
Soil Removal ◽  
Water Drop ◽  
Glow Discharge Plasma ◽  
Vinyl Monomers ◽  
Chemical Surface ◽  
Textile Fabrics ◽  
Colour Measurements ◽  
Soil Release ◽  
Physical And Chemical ◽  
Surface Changes

The polyamide and polyester fabrics have been treated by glow discharge plasma and grafted with 2-hydroxyethylmethacrylate (HEMA) in order to increase the hydrophilicity and to improve the soil release properties. The plasma treatments were carried out at different exposure times. Grafting was obtained with gaseous HEMA and with alcohol or aqueous solution of HEMA at different concentrations. The physical and chemical surface changes were studied using scanning electron microscopy, infrared spectroscopy, colour measurements. The hydrophilicity was assessed through the absorption time of a water drop and the soil removal through washing by remission values.

scholarly journals Chemical Surface Analysis on Post-Thermal Treatment of the K-OMS-2 Catalysts and Catalytic Oxidation Efficiency at Low Temperature

2019 ◽  
Vol 48 (7) ◽  
pp. 1447-1457
Author(s):  
Chatkamol Kaewbuddee ◽  
Pinit Kidkhunthod ◽  
Narong Chanlek ◽  
Rattabal Khunphonoi ◽  
Kitirote Wantala
Keyword(s):  
Thermal Treatment ◽  
Low Temperature ◽  
Catalytic Oxidation ◽  
Surface Analysis ◽  
Chemical Surface ◽  
Oxidation Efficiency
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