Relations of pressure and temperature dependences of the Johari-Goldstein β-relaxation to the α-relaxation: Amorphous polymers

Relationship between the α- and β-relaxation processes in amorphous polymers: Insight from atomistic molecular dynamics simulations of 1,4-polybutadiene melts and blends

Journal of Polymer Science Part B Polymer Physics ◽

10.1002/polb.21064 ◽

2007 ◽

Vol 45 (6) ◽

pp. 627-643 ◽

Cited By ~ 67

Author(s):

Grant D. Smith ◽

Dmitry Bedrov

Keyword(s):

Molecular Dynamics ◽

Molecular Dynamics Simulations ◽

Amorphous Polymers ◽

Relaxation Processes ◽

Β Relaxation ◽

Dynamics Simulations

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A quantitative explanation of the difference in the temperature dependences of the viscoelastic softening and terminal dispersions of linear amorphous polymers

Journal of Polymer Science Part B Polymer Physics ◽

10.1002/polb.1986.090240310 ◽

1986 ◽

Vol 24 (3) ◽

pp. 619-632 ◽

Cited By ~ 69

Author(s):

K. L. Ngai ◽

D. J. Plazek

Keyword(s):

Amorphous Polymers ◽

Temperature Dependences ◽

The Difference ◽

Quantitative Explanation

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Viscoelastic properties of amorphous polymers. I. Different temperature dependences of segmental relaxation and terminal dispersion

Macromolecules ◽

10.1021/ma00045a016 ◽

1992 ◽

Vol 25 (19) ◽

pp. 4920-4924 ◽

Cited By ~ 69

Author(s):

D. J. Plazek ◽

X. D. Zheng ◽

K. L. Ngai

Keyword(s):

Viscoelastic Properties ◽

Amorphous Polymers ◽

Segmental Relaxation ◽

Temperature Dependences

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Effect of secondary relaxation transitions on photo-induced anisotropy in glassy azobenzene-functionalized polymers

Journal of Materials Chemistry C ◽

10.1039/c7tc01652b ◽

2017 ◽

Vol 5 (27) ◽

pp. 6828-6833 ◽

Cited By ~ 4

Author(s):

Sergey S. Kharintsev ◽

Ksenia L. Shukhina ◽

Alexandr I. Fishman ◽

Semion K. Saikin

Keyword(s):

Amorphous Polymers ◽

Relaxation Transition ◽

Temperature Behavior ◽

Functionalized Polymers ◽

Side Chain ◽

Induced Anisotropy ◽

Secondary Relaxation ◽

Relaxation Transitions ◽

Β Relaxation ◽

Infrared Dichroism

The β-relaxation transition in side-chain azobenzene-functionalized amorphous polymers can be directly found from the temperature behavior of infrared dichroism.

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Nature of Poisson's ratio of amorphous polymers and glasses and its relation to structure-sensitive properties

Uspekhi Fizicheskih Nauk ◽

10.3367/ufnr.2019.05.038574 ◽

2019 ◽

Vol 190 (04) ◽

pp. 355-370

Author(s):

Damba S. Sanditov

Keyword(s):

Poisson’S Ratio ◽

Amorphous Polymers ◽

Poisson's Ratio ◽

Structure Sensitive

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Concentration, And Temperature Dependences Of Exciton Transition Energies In AlxGa1-xAs/GaAs/AlxGa1-xAs Nanofilms

Ukrainian Journal of Physics ◽

10.15407/ujpe60.05.0458 ◽

2015 ◽

Vol 60 (5) ◽

pp. 458-467

Author(s):

D.V. Kondryuk ◽

◽

V.M. Kramar

Keyword(s):

Exciton Transition ◽

Transition Energies ◽

Temperature Dependences

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The Determination of the Magnetoelectric Coupling Coefficient in Ferroelectric–Ferromagnetic Composite Based on PZT–Ferrite

Archives of Metallurgy and Materials ◽

10.2478/amm-2013-0183 ◽

2013 ◽

Vol 58 (4) ◽

pp. 1401-1403 ◽

Cited By ~ 3

Author(s):

J.A. Bartkowska ◽

R. Zachariasz ◽

D. Bochenek ◽

J. Ilczuk

Keyword(s):

Dielectric Permittivity ◽

Coupling Coefficient ◽

Mean Field ◽

Field Approximation ◽

Theoretical Description ◽

Magnetoelectric Coupling ◽

Mean Field Approximation ◽

Dielectric Measurements ◽

Temperature Dependences ◽

Multiferroic Composite

Abstract In the present work, the magnetoelectric coupling coefficient, from the temperature dependences of the dielectric permittivity for the multiferroic composite was determined. The research material was ferroelectric-ferromagnetic composite on the based PZT and ferrite. We investigated the temperature dependences of the dielectric permittivity (") for the different frequency of measurement’s field. From the dielectric measurements we determined the temperature of phase transition from ferroelectric to paraelectric phase. For the theoretical description of the temperature dependence of the dielectric constant, the Hamiltonian of Alcantara, Gehring and Janssen was used. To investigate the dielectric properties of the multiferroic composite this Hamiltonian was expressed under the mean-field approximation. Based on dielectric measurements and theoretical considerations, the values of the magnetoelectric coupling coefficient were specified.

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Features of radiothermoluminescence of polypropylene and ethylene propylenediene elastomer SKEPT-4044 compositions with nanoscale metal-containing fillers

Physics and Chemistry of Materials Treatment ◽

10.30791/0015-3214-2020-3-66-73 ◽

2020 ◽

pp. 66-73

Author(s):

A.M. Magerramov ◽

◽

N.I. Kurbanova ◽

M.N. Bayramov ◽

N.A. Alimirzoyeva ◽

...

Keyword(s):

Transition Temperature ◽

Molecular Mobility ◽

Fe3o4 Nanoparticles ◽

Low Temperatures ◽

Frost Resistance ◽

Relaxation Processes ◽

Ethylene Propylene ◽

Temperature Range ◽

Β Relaxation

Using radiothermoluminescence (RTL), the molecular mobility features in the temperature range of 77-300 K were studied for the polypropylene (PP)/ethylene propylene diene elastomer SKEPT-4044 with NiO, Cu2O and Fe3O4 nanoparticles (NPs) based on ABS-acrylonitrile butadiene or SCS-divinyl styrene matrices. It has been shown that the introduction of nanofillers in PP significantly affects the nature and temperature of γ- and β-relaxation processes, while the region of manifestation of the β-process noticeably shifts to the region of low temperatures. Composites with Cu2O NPs have a higher β-transition temperature Tβ than composites with other NPs. It was found that PP/SKEPT-4044 composites with Cu2O NPs with a dispersion of 11-15 nm and acrylonitrile butadiene thermoplastics have optimal frost resistance compared to other compositions.

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