Results 1 to 10 of about 13,293,810 (294)

Molecular Simulation Study on Structural Change of Polyesters in D5 [PDF]

open access: yesZhengzhou Daxue xuebao. Gongxue ban, 2021
To study the changes of the microstructure of PET in D5 is helpful to understand the dyeing mechanism of PET with D5 as the medium and make a reasonable dyeing process.
Zheng Jin   +5 more
doaj   +1 more source

Influence of a Protective Coating on the Crystallization of an Amorphous Fe78Si13B9 Alloy

open access: yesMetals, 2023
The effect of free volume on the crystallization of amorphous Fe78Si13B9 ribbons was studied using ultrasonic and thermal treatments. To maintain free volume under heating, amorphous samples were coated with a special protective Ta coating.
Galina Abrosimova   +5 more
doaj   +1 more source

Free volume under shear [PDF]

open access: yesThe Journal of Chemical Physics, 2015
Using an athermal quasistatic simulation protocol, we study the distribution of free volumes in sheared hard-particle packings close to, but below, the random-close packing threshold. We show that under shear, and independent of volume fraction, the free volumes develop features similar to close-packed systems — particles self-organize in a manner as ...
Maiti, Moumita   +3 more
openaire   +4 more sources

Comparison of Free-Volume Theories [PDF]

open access: yesPolymer Journal, 1993
It is shown that the Vrentas-Duda conclusion that the Fujita theory can be regarded as a restricted form of the Vrentas-Duda theory is indeed ...
Vrentas, J. S.   +2 more
openaire   +1 more source

MODELLING OF TIME-DEPENDENT BEHAVIOUR OF PARTICULATE THERMOSET POLYMERS

open access: yesActa Polytechnica CTU Proceedings, 2021
A preliminary study of a numerical model describing the behaviour of polymer-based composites is presented. The numerical model consists of three main parts.
Jan Vozáb, Jan Vorel
doaj   +1 more source

Water Sorption in Glassy Polyvinylpyrrolidone-Based Polymers

open access: yesMembranes, 2022
Polyvinylpyrrolidone (PVP)-based polymers are excellent stabilizers for food supplements and pharmaceutical ingredients. However, they are highly hygroscopic.
Dominik Borrmann   +2 more
doaj   +1 more source

Application Progress of PALS in the Correlation of Structure and Properties for Graphene/Polymer Nanocomposites

open access: yesNanomaterials, 2022
Giving a deep insight into the microstructure, and realizing the correlation between microstructure and properties is very important to the precise construction of high-performance graphene/polymer nanocomposites (GPN).
Xiaobing Han   +5 more
doaj   +1 more source

Molecular Dynamics Simulation of Hydrogels Based on Phosphorylcholine-Containing Copolymers for Soft Contact Lens Applications

open access: yesMolecules, 2023
The structure and dynamics of copolymers of 2-hydroxyethyl methacrylate (HEMA) with 2-methacryloyloxyethyl phosphorylcholine (MPC) were studied by molecular dynamics simulations. In total, 20 systems were analyzed. They differed in numerical fractions of
Katarzyna Filipecka-Szymczyk   +2 more
doaj   +1 more source

Influence of High-Pressure Torsion and Accumulative High-Pressure Torsion on Microstructure and Properties of Zr-Based Bulk Metallic Glass Vit105

open access: yesMetals, 2020
Vit105 (Zr52.5Cu17.9Ni14.6Al10Ti5 at. %) bulk metallic glass samples were processed by high-pressure torsion and accumulative high-pressure torsion. By DSC, XRD and SANS methods it was shown that accumulative high-pressure torsion allows for achieving ...
Dmitry Gunderov   +6 more
doaj   +1 more source

Design and synthesis of novel poly (aryl ether ketones) containing trifluoromethyl and trifluoromethoxy groups

open access: yesDesigned Monomers and Polymers, 2023
The high-frequency and high-speed communication in the 5 G era puts forward requirements for the dielectric properties of polymers. Introducing fluorine into poly(ary ether ketone) can improve its dielectric properties.
Xiaolong Liu   +5 more
doaj   +1 more source

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