KFU. Card publication. Scaling analysis of the viscoelastic response of linear polymers

KAZAN
FEDERAL UNIVERSITY

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SCALING ANALYSIS OF THE VISCOELASTIC RESPONSE OF LINEAR POLYMERS

Form of presentation

Articles in international journals and collections

Year of publication

2018

Язык

английский

Authors, employees of KFU

Fatkullin Nail Fidaievich, author

Bibliographic description in the original language

Mohamed F., Flaemig M., Hofmann M., Scaling analysis of the viscoelastic response of linear polymers//JOURNAL OF CHEMICAL PHYSICS. - 2018. - Vol.149, Is.4. - Art. №44902.

Annotation

Viscoelastic response in terms of the complex shear modulus G*(ω) of the linear polymers poly(ethylene-alt-propylene), poly(isoprene), and poly(butadiene) is studied for molar masses (M) from 3k up to 1000k and over a wide temperature range starting from the glass transition temperature Tg (174 K–373 K). Master curves G'(ωτα) and G«(ωτα) are constructed for the polymer-specific relaxation. Segmental relaxation occurring close to Tg is independently addressed by single spectra. Altogether, viscoelastic response is effectively studied over 14 decades in frequency. The structural relaxation time τα used for scaling is taken from dielectric spectra. We suggest a derivative method for identifying the different power-law regimes and their exponents along G«(ωτα) ∝ ωε«. The exponent ε« = ε«(ωτα) ≡ d ln G«(ωτα)/d ln(ωτα) reveals more details compared to conventional analyses and displays high similarity among the polymers. Within a simple scaling model, the original tube-reptation model is

Keywords

polymer melts viscoelastivity

The name of the journal

Journal of Chemical Physics

URL

https://doi.org/10.1063/1.5038643

Please use this ID to quote from or refer to the card

https://repository.kpfu.ru/eng/?p_id=185221&p_lang=2

Full metadata record

Field DC	Value	Language
dc.contributor.author	Fatkullin Nail Fidaievich	ru_RU
dc.date.accessioned	2018-01-01T00:00:00Z	ru_RU
dc.date.available	2018-01-01T00:00:00Z	ru_RU
dc.date.issued	2018	ru_RU
dc.identifier.citation	Mohamed F., Flaemig M., Hofmann M., Scaling analysis of the viscoelastic response of linear polymers//JOURNAL OF CHEMICAL PHYSICS. - 2018. - Vol.149, Is.4. - Art. №44902.	ru_RU
dc.identifier.uri	https://repository.kpfu.ru/eng/?p_id=185221&p_lang=2	ru_RU
dc.description.abstract	Journal of Chemical Physics	ru_RU
dc.description.abstract	Viscoelastic response in terms of the complex shear modulus G*(ω) of the linear polymers poly(ethylene-alt-propylene), poly(isoprene), and poly(butadiene) is studied for molar masses (M) from 3k up to 1000k and over a wide temperature range starting from the glass transition temperature Tg (174 K–373 K). Master curves G'(ωτα) and G«(ωτα) are constructed for the polymer-specific relaxation. Segmental relaxation occurring close to Tg is independently addressed by single spectra. Altogether, viscoelastic response is effectively studied over 14 decades in frequency. The structural relaxation time τα used for scaling is taken from dielectric spectra. We suggest a derivative method for identifying the different power-law regimes and their exponents along G«(ωτα) ∝ ωε«. The exponent ε« = ε«(ωτα) ≡ d ln G«(ωτα)/d ln(ωτα) reveals more details compared to conventional analyses and displays high similarity among the polymers. Within a simple scaling model, the original tube-reptation model is	ru_RU
dc.language.iso	ru	ru_RU
dc.subject		ru_RU
dc.title	Scaling analysis of the viscoelastic response of linear polymers	ru_RU
dc.type	Articles in international journals and collections	ru_RU