Materials Literature
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The most common shape-memory polymers are those in which the shape-recovery is thermally-induced. A body made from such a material may be subjected to large deformations at an elevated temperature above its glass transition temperature θg . Cooling the deformed body to a temperature below θ g under active kinematical…
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Microstructures and grain growth behaviors at elevated temperatures have been investigated for extruded Mg-2%Zn and Mg-2%Zn-0.3%Zr alloys, in order to clarify the role of Zr in grain stability of Mg-Zn alloy. The grain size of Zr-free alloy increased continuously with an increase in annealing temperature, when isochro…
Studies on the rate of release of silver ions from ethylene polyterephthalate (PET) fibers, which had earlier been grafted with acrylic or metacrylic acid and then impregnated with silver nitrate, into a 0.01% aqueous solution of nitric acid has been presented. The results confirm, that the Ag+ ions are released gradu…
"GUEST EDITORIAL." Advances in Applied Ceramics, 109(8), p. 445
A study was made of the effect of electrothermopolarisation on the mechanical and electric strengths of polypropylene and polyethylene modified with additions of low-molecular-weight dyes. It was shown that, with increase in the strength of the polarisation electric field Ep, the mechanical and electric strengths of t…
This research evaluates the changes in the comfort-related properties of high-density fabric, such as moisture permeability and waterproofness, in order to assess the relative importance of laundry conditions for clothing properties after repeated laundering and suggest the best laundering conditions for high-density…
Plastics Engineering is the official publication of the Society of Plastics Engineers (SPE). We provide plastics professionals with a wealth of information about machinery, technological advances, materials innovations, sustainability, and more.
An examination is made of the effect of synthetic tanning agents on the colloid-chemical properties of non-ionogenic dispersions of polymers when the latter are used in the production of fibroporous composite materials.
Silica-titania (SiO 2 -TiO 2 ) blend sols were prepared via a sol-gel method from tetraethoxylsilane and tetrabutyl titanate. Poly(butyl methacrylate) (PBMA)/SiO 2 -TiO 2 hybrid sols were synthesized through in-situ polymerization of butyl methacrylate (BMA) in the blend sol. After ageing treatment, PBMA/SiO 2 -TiO 2…
Having worked intensely on plasma-assisted barrier coating (plasma enhanced chemical vapor deposition, PECVD) of polymers, a technique already used commercially to enhance shelf-life performance of PET bottles, for the last two decades, it seemed to be obvious to investigate the transfer of this existing technique to…
An examination was made of the theoretical principles of the process of pressing glass-fabric laminates. The main factors influencing the process and the quality of the material obtained were determined. The influence of the properties of the binder on the production of a stable, dipped glass fabric was studied. On th…
University of Minnesota Ph.D. dissertation.November 2010. Major: Biomedical Engineering. Advisor: Robert Tranquillo. 1 computer file (PDF); ix, 180 pages.
The research reported in this dissertation is presented in two parts. The first part is the Syntheses, Characterizations, and Investigations of Molecular Micelles and Imidazolium-Based Ionic Liquids for Protein Separations in Electrophoresis, and the second part is a case study entitled Investigating the Mentoring Can…
Res problèmes tribologiques rencontrés dans l'emboutissage des tôles sont particulièrement difficiles pour au moins deux raisons : raisons physiques. Ces problèmes concernent les interactions superficielles des matériaux de surface de la tôle et de l'outil entre lesquels viennent s'intercaler certai
Interfacial delamination is often the critical failure mode limiting the performance of polymer/metal interfaces. Consequently methods that measure the toughness of such interfaces are of considerable interest. One approach for measuring the toughness of a polymer/metal interface is to use the stressed-overlayer test.…
The research includes a study for the variables of the process of centrifugalatomization for the purpose of producing pure tin metal powder and the effect ofthese variables in the properties of the resulting powder. These variables are:1. The speed of rotation in the rotating part.2. The medium of cooling.3. The tempe…
The way of alloying of sleeve cast iron with copper is offered. This technology will enable not only to stabilize of qualitative characteristics of cast slugs, but to reduce the expenses for alloying due to using of secondary materials as well.
The influence of surface-active component of complex modifier on structure of low-carbon steel is shown. It is determined that the complex modifier, containing carbideforming and surface-active components, influences more effectively on macro- and microstructure of low-carbon steel.
Aplicando ultrasonido a tejidos de algodón, en una solución de sulfato de cobre, se obtuvo nanopartículas de óxido de cobre impregnadas en el tejido. Las caracterizaciones por difracción de electrones muestran que el material formado consiste de las fases Cu-64O, Cu-4O y CuO, mientras que por difracción de rayos X se…