The First Example of a Polymer-Crystal–Organic-Dye Composite Material: The Clathrate Phase of Syndiotactic Polystyrene with Azulene

2005 ◽  
Vol 17 (15) ◽  
pp. 1846-1850 ◽  
Author(s):  
Y. Uda ◽  
F. Kaneko ◽  
N. Tanigaki ◽  
T. Kawaguchi
Keyword(s):  
Composite Material ◽  
Organic Dye ◽  
Syndiotactic Polystyrene ◽  
Polymer Crystal

Optical, structural, and lasing properties of a composite material nanoporous glass filled with an organic dye activated polymer

2007 ◽  
Author(s):  
S. S. Anufrik ◽  
M. I. Ihnatouski ◽  
M. F. Koldunov ◽  
A. M. Lyalikov ◽  
A. A. Manenkov ◽  
...  
Keyword(s):  
Composite Material ◽  
Organic Dye ◽  
Nanoporous Glass

New Zn (II) Complex-Composite Material: Piezo-Enhanced Photomineralization of Organic Pollutants and Wastewater from Lubricant Industry

2021 ◽  
Author(s):  
Someshwar Pola ◽  
Venkateshwar Rao D ◽  
Mahesh Subburu ◽  
Ramesh Gade ◽  
Manohar Basude ◽  
...  
Keyword(s):  
Composite Material ◽  
Photocatalytic Activity ◽  
Organic Pollutants ◽  
Industrial Wastewater ◽  
Organic Dye ◽  
Current Work ◽  
Dye Pollutants

TThe current work, the ZnO-[Zn(CPAMN)] complex composite material used for piezo-photocatalyst for mineralization of organic dye pollutants and industrial wastewater. The ZnO-[Zn(CPAMN)] complex-composite material showed higher piezo-photocatalytic activity than simple...

scholarly journals Free-energy landscape of polymer-crystal polymorphism

Soft Matter ◽  
2020 ◽  
Vol 16 (42) ◽  
pp. 9683-9692
Author(s):  
Chan Liu ◽  
Jan Gerit Brandenburg ◽  
Omar Valsson ◽  
Kurt Kremer ◽  
Tristan Bereau
Keyword(s):  
Free Energy ◽  
Energy Landscape ◽  
Coarse Grained ◽  
Syndiotactic Polystyrene ◽  
Free Energy Landscape ◽  
Quantum Mechanical ◽  
Quantum Mechanical Calculations ◽  
Crystal Polymorphism ◽  
Polymer Crystal ◽  
Coarse Grained Simulations

Free-energy landscape of crystallized syndiotactic-polystyrene polymorphism from quantum-mechanical calculations and coarse-grained simulations.

A New Defect in Polyethylene Single Crystals

1973 ◽  
Vol 31 ◽  
pp. 70-71
Author(s):  
E. L. Thomas ◽  
S. L. Sass
Keyword(s):  
Single Crystals ◽  
Screw Dislocation ◽  
Small Distance ◽  
Dipole Model ◽  
Dislocation Dipole ◽  
Chain Folding ◽  
Black And White ◽  
Polymer Crystal ◽  
Different Types

In polyethylene single crystals pairs of black and white lines spaced 700-3,000Å apart, parallel to the [100] and [010] directions, have been identified as microsector boundaries. A microsector is formed when the plane of chain folding changes over a small distance within a polymer crystal. In order for the different types of folds to accommodate at the boundary between the 2 fold domains, a staggering along the chain direction and a rotation of the chains in the plane of the boundary occurs. The black-white contrast from a microsector boundary can be explained in terms of these chain rotations. We demonstrate that microsectors can terminate within the crystal and interpret the observed terminal strain contrast in terms of a screw dislocation dipole model.

Atomic structure of interface of intermetallic compound TiAl and nitride Ti2AIN using HREM and image processing

1991 ◽  
Vol 49 ◽  
pp. 570-571
Author(s):  
E. Sukedai ◽  
H. Mabuchi ◽  
H. Hashimoto ◽  
Y. Nakayama
Keyword(s):  
Mechanical Properties ◽  
Image Processing ◽  
Composite Material ◽  
Intermetallic Compound ◽  
Side Surface ◽  
High Resolution Electron Microscopy ◽  
Hexagonal Structure ◽  
Second Phase ◽  
Resolution Electron ◽  
Compound Tial

In order to improve the mechanical properties of an intermetal1ic compound TiAl, a composite material of TiAl involving a second phase Ti2AIN was prepared by a new combustion reaction method. It is found that Ti2AIN (hexagonal structure) is a rod shape as shown in Fig.1 and its side surface is almost parallel to the basal plane, and this composite material has distinguished strength at elevated temperature and considerable toughness at room temperature comparing with TiAl single phase material. Since the property of the interface of composite materials has strong influences to their mechanical properties, the structure of the interface of intermetallic compound and nitride on the areas corresponding to 2, 3 and 4 as shown in Fig.1 was investigated using high resolution electron microscopy and image processing.

The microstructure of a TiB2/Ti-47 Al composite material

1989 ◽  
Vol 47 ◽  
pp. 674-675
Author(s):  
O. Popoola ◽  
A.H. Heuer ◽  
P. Pirouz
Keyword(s):  
Composite Material ◽  
Ion Beam ◽  
Chemical Properties ◽  
Intermetallic Alloys ◽  
Transmission Electron ◽  
Diamond Polishing ◽  
Al Composite ◽  
The Matrix ◽  
Argon Ion ◽  
And Chemical Properties

The addition of fibres or particles (TiB2, SiC etc.) into TiAl intermetallic alloys could increase their toughness without compromising their good high temperature mechanical and chemical properties. This paper briefly discribes the microstructure developed by a TiAl/TiB2 composite material fabricated with the XD™ process and forged at 960°C.The specimens for transmission electron microscopy (TEM) were prepared in the usual way (i.e. diamond polishing and argon ion beam thinning) and examined on a JEOL 4000EX for microstucture and on a Philips 400T equipped with a SiLi detector for microanalyses.The matrix was predominantly γ (TiAl with L10 structure) and α2(TisAl with DO 19 structure) phases with various morphologies shown in figure 1.

Application of pyrometer and standard sample to determine surface temperature of studied materials

2019 ◽  
pp. 9-13
Author(s):  
V.Ya. Mendeleyev ◽  
V.A. Petrov ◽  
A.V. Yashin ◽  
A.I. Vangonen ◽  
O.K. Taganov
Keyword(s):  
Composite Material ◽  
Surface Temperature ◽  
Relative Error ◽  
Wavelength Range ◽  
Standard Sample ◽  
A Priori ◽  
Temperature Changes ◽  
Surface Temperatures ◽  
Relative Errors ◽  
Normal Emissivity

Determining the surface temperature of materials with unknown emissivity is studied. A method for determining the surface temperature using a standard sample of average spectral normal emissivity in the wavelength range of 1,65–1,80 μm and an industrially produced Metis M322 pyrometer operating in the same wavelength range. The surface temperature of studied samples of the composite material and platinum was determined experimentally from the temperature of a standard sample located on the studied surfaces. The relative error in determining the surface temperature of the studied materials, introduced by the proposed method, was calculated taking into account the temperatures of the platinum and the composite material, determined from the temperature of the standard sample located on the studied surfaces, and from the temperature of the studied surfaces in the absence of the standard sample. The relative errors thus obtained did not exceed 1,7 % for the composite material and 0,5% for the platinum at surface temperatures of about 973 K. It was also found that: the inaccuracy of a priori data on the emissivity of the standard sample in the range (–0,01; 0,01) relative to the average emissivity increases the relative error in determining the temperature of the composite material by 0,68 %, and the installation of a standard sample on the studied materials leads to temperature changes on the periphery of the surface not exceeding 0,47 % for composite material and 0,05 % for platinum.

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