Results 21 to 30 of about 280 (152)

Lamellar thickness and stretching temperature dependency of cavitation in semicrystalline polymers. [PDF]

open access: yesPLoS ONE, 2014
Polybutene-1 (PB-1), a typical semicrystalline polymer, in its stable form I shows a peculiar temperature dependent strain-whitening behavior when being stretched at temperatures in between room temperature and melting temperature of the crystallites ...
Yaotao Wang   +4 more
doaj   +1 more source

Computational Predictions for Boger Fluids and Circular Contraction Flow under Various Aspect Ratios

open access: yesFluids, 2020
This work puts forward a modeling study contrasted against experimental, with focus on abrupt circular contraction flow of two highly-elastic constant shear-viscosity Boger fluids, i.e., a polyacrylamide dissolved in corn-syrup PAA/CS (Fluid-1) and a ...
J. Esteban López-Aguilar   +1 more
doaj   +1 more source

Mpemba effect in crystallization of polybutene-1

open access: yesSoft Matter, 2023
The Mpemba effect and its inverse can be understood as a result of nonequilibrium thermodynamics.
Jinghua Liu   +4 more
openaire   +3 more sources

Micro-hardness of surface layer of irradiated Polybutene Terephthalate (PBT)

open access: yesMATEC Web of Conferences, 2016
Using high doses of beta radiation for polybutylene terephthalate (PBT) and its influence on the changes of micromechanical properties of surface layer has not been studied in detail so far. The specimens of PBT were made by injection moulding technology
Manas David   +6 more
doaj   +1 more source

Problems of Selection of Lubricants for Ethylene High-Pressure Compressors. 4. Investigation of antifriction properties of naphtene and polyglycol oils during high loading of solid lubricant pair

open access: yesФізика і хімія твердого тіла, 2018
The antifriction properties of naphtene and polyglycol oils during little loading with lubrication of pair bronze-tungsten-carbide-alloy WK-6 (WK-ll) and graphelon-20-WK-6 (WK-11) and high loading with lubrication of pair ball-bearing-high-chromium steel
H. O. Sirenko   +4 more
doaj   +1 more source

Development of a Sliding Plate Rheometer to Measure the High Frequency Viscoelastic Properties of Polymer Melts

open access: yesApplied Rheology, 2007
A newly designed and constructed sliding plate rheometer is used to measure the high frequency (210 Hz) linear viscoelastic properties of two model polymers: polybutene (PB) and polydimethylsiloxane (PDMS).
Braybrook Chelsea A.   +3 more
doaj   +1 more source

The Stability of Viscosity of Polybutenes and Polybutene-Mineral Oil Mixtures

open access: yesJournal of the Society of Materials Science, Japan, 1973
In order to obtain the data of the stability of high viscosity standard oils, the variation of viscosity with age was measured by means of a caoillary master viscometer for nolybutenes having viscosities of 55, 340, and 1010 poises at 25°C, and for polybutene-mineral oil mixtures having viscosities of 20, 100, and 540 poises at 25°C.The results ...
YOSHIDA, Kiyoshi   +3 more
openaire   +2 more sources

On the Influence of Concentration on the Rheology of Polymer Solutions: Can Scaling Laws Be Found?

open access: yesApplied Rheology, 2003
The present work is concerned with the study of the rheology of polymer solutions spanning different concentration regimes and originates from a former round-robin research programme on this subject, the S1 project, involving a number of research groups ...
Nogueiro A. J., Maia J. M.
doaj   +1 more source

EPR Spectroscopy Investigation of Cu2+ Ions Adsorbed in Tannin-Formaldehyde Resins of Mimosa (Acacia mearnsii) Bark Extracts

open access: yesJournal of Spectroscopy, 2015
The chemical environment of Cu2+ ions adsorbed in tannin-formaldehyde resins of Acacia mearnsii bark extracts, prepared from polybutene, is investigated by EPR spectroscopy at 300 K. The spectrum is simulated considering two isolated axial Cu(II) species
Marcelo H. Herbst, Ney V. Vugman
doaj   +1 more source

Overcoming the Nyquist Limit in Molecular Hyperspectral Imaging by Reinforcement Learning

open access: yesAdvanced Intelligent Discovery, EarlyView.
Explorative spectral acquisition guide automatically selects informative spectral bands to optimize downstream tasks, outperforming full‐spectrum acquisition. The selected hyperspectral data are used for tasks such as unmixing and segmentation. BandOptiNet encodes selection states and outputs optimal bands to guide spectral acquisition. Recent advances
Xiaobin Tang   +4 more
wiley   +1 more source

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