A NEW TYPE OF ROTATING ADIABATIC CALORIMETER. THE SURFACE ENERGY AND HEAT OF SOLUTION OF SODIUM CHLORIDE. II

1927 ◽  
Vol 49 (8) ◽  
pp. 1940-1949 ◽  
Author(s):  
S. G. Lipsett ◽  
F. M. G. Johnson ◽  
O. Maass
Keyword(s):  
Sodium Chloride ◽  
Surface Energy ◽  
Adiabatic Calorimeter ◽  
Heat Of Solution ◽  
New Type

THE SURFACE ENERGY AND THE HEAT OF SOLUTION OF SOLID SODIUM CHLORIDE. I

1927 ◽  
Vol 49 (4) ◽  
pp. 925-943 ◽  
Author(s):  
S. G. Lipsett ◽  
F. M. G. Johnson ◽  
O. Maass
Keyword(s):  
Sodium Chloride ◽  
Surface Energy ◽  
Heat Of Solution

scholarly journals On the peculiarities of anti-plane surface waves propagation for media with microstructured coating

2018 ◽  
Vol 226 ◽  
pp. 03020 ◽  
Author(s):  
Victor A. Eremeyev
Keyword(s):  
Surface Energy ◽  
Surface Waves ◽  
Plane Surface ◽  
Surface Elasticity ◽  
Point Of View ◽  
Surface Strain ◽  
Physical Point ◽  
Anisotropic Surface ◽  
New Type ◽  
Long Fibers

We discuss new type of surface waves which exist in elastic media with surface energy. Here we present the model of a coating made of polymeric brush. From the physical point of view the considered model of surface elasticity describes a highly anisotropic surface coating. Here the surface energy model could be treated as 2D reduced strain gradient continuum as surface strain energy depends on few second spatial derivatives of displacements. From the mechanical point of view the proposed model relates to 2D coating made of long fibers undergoing stretching and bending deformations. We consider here anti-plane surface waves. The dispersion relation is derived and its dependence on the material parameters is analysed.

Improvement of the Hydrophilicity of Cu/LDPE Composite and its Influence on the Release of Cupric Ions

2013 ◽  
Vol 745-746 ◽  
pp. 46-52
Author(s):  
Ying Tang ◽  
Xian Ping Xia
Keyword(s):  
Sodium Chloride ◽  
Medical Devices ◽  
Soluble Starch ◽  
Intrauterine Devices ◽  
Surface Hydrophilicity ◽  
The Matrix ◽  
New Type ◽  
Hydrophilic Materials

t is of great importance to improve the hydrophilicity of Cu/LDPE composite, a material for a new type of IUDs (Intrauterine Devices). The aim of the study is not only satisfying the biocompatibility of medical devices implanted in human bodies, but also improving the releasing rate of cupric ions. In this study, various hydrophilic materials (sodium chloride, anhydrous glucose and soluble starch) were added respectively, in order to improve the hydrophilicity of Cu/LDPE composite. The microstructure of Cu/LDPE composite was characterized, moreover, the influence of the addition of these hydrophilic materials on the surface hydrophilicity and the releasing rate of cupric ions of Cu/LDPE composite was studied. The compatibility between three hydrophilic materials and the matrix of LDPE is rather different, which can affect the dispersible uniformity of these additives in Cu/LDPE composite, and the dispersible uniformity of NaCl is the worst among these three hydrophilic materials. The addition of three hydrophilic materials was all beneficial to the improvement of the hydrophilicity of Cu/LDPE composite. Connected holes were formed in Cu/LDPE composite, which provided channels for the infiltration of solution and the diffusion of cupric ions, and improved the releasing rate of cupric ions in the Cu/LDPE composite IUDs.

scholarly journals Surface modification of carbon fibres using plasma technique

2014 ◽  
Vol 14 (1) ◽  
pp. 34-38 ◽  
Author(s):  
Iris Käppler ◽  
Rolf-Dieter Hund ◽  
Chokri Cherif
Keyword(s):  
Surface Energy ◽  
Carbon Fibre ◽  
Fibre Surface ◽  
Atmospheric Plasma ◽  
Carbon Fibres ◽  
Plasma Technique ◽  
New Type ◽  
Chemical Techniques ◽  
New Generation ◽  
Characterisation Methods

Abstract For the development of a new generation non-crimp fabrics (NCF) made of carbon fibres, a feasibility study of different characterisation methods and surface treatments of the used carbon fibres needs to be performed. In order to join the carbon fibre layers with the binder for realising this new type of NCF, the surface topography and functionality of the fibres have to be analysed first. The wettability of the binder to the carbon fibre surface is of prime significance and needs to be enhanced. Here, the enhancement is carried out by improving the surface energy using atmospheric plasma of compressed air, argon and nitrogen. It is also proposed to improve the surface energy through chemical techniques.

SURFACE ENERGIES OF THE ALKALI HALIDES

1955 ◽  
Vol 33 (2) ◽  
pp. 232-239 ◽  
Author(s):  
G. C. Benson ◽  
G. W. Benson
Keyword(s):  
Particle Size ◽  
Sodium Chloride ◽  
Theoretical Calculations ◽  
Alkali Halides ◽  
Experimental Measurements ◽  
Calorimetric Study ◽  
Heat Of Solution ◽  
Surface Energies ◽  
Effect Of Particle Size ◽  
Surface Enthalpy

Previous theoretical calculations and experimental measurements of the surface energies or enthalpies of the alkali halides are reviewed briefly. A new attempt to determine the surface enthalpy associated with the {100} face of sodium chloride from a calorimetric study of the effect of particle size on the heat of solution is described. The result (305 ergs/cm.2 at 25 °C.) appears to be larger than might be predicted on the basis of the classical Born-Mayer theory.

THE HEATS OF SOLUTION AND SPECIFIC HEATS OF RHOMBIC SULPHUR IN CARBON DISULPHIDE: THE SURFACE ENERGY OF SOLID RHOMBIC SULPHUR

1935 ◽  
Vol 13b (5) ◽  
pp. 280-288 ◽  
Author(s):  
A. R. Williams ◽  
F. M. G. Johnson ◽  
O. Maass
Keyword(s):  
Particle Size ◽  
Surface Energy ◽  
Carbon Disulphide ◽  
Heat Of Solution ◽  
Specific Heats ◽  
Heats Of Solution

The heats of solution of rhombic sulphur in carbon disulphide were measured over the concentration range 6 to 17% of sulphur and at 20° and 25 °C., and the specific heats of these solutions were calculated. The apparatus designed for these measurements is described. By measuring the heat of solution of finely divided sulphur and its particle size, the surface energy of solid rhombic sulphur is estimated.

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