Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts

Research output: Contribution to journal › Journal article › Research › peer-review

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Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts. / Borger, Anine L.; Huang, Qian; Hassager, Ole; Kirkensgaard, Jacob J. K.; Almdal, Kristoffer; Mortensen, Kell.

In: Physical Review Research, Vol. 2, No. 4, 043119, 22.10.2020.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Borger, AL, Huang, Q, Hassager, O, Kirkensgaard, JJK, Almdal, K & Mortensen, K 2020, 'Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts', Physical Review Research, vol. 2, no. 4, 043119. https://doi.org/10.1103/PhysRevResearch.2.043119

APA

Borger, A. L., Huang, Q., Hassager, O., Kirkensgaard, J. J. K., Almdal, K., & Mortensen, K. (2020). Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts. Physical Review Research, 2(4), [043119]. https://doi.org/10.1103/PhysRevResearch.2.043119

Vancouver

Borger AL, Huang Q, Hassager O, Kirkensgaard JJK, Almdal K, Mortensen K. Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts. Physical Review Research. 2020 Oct 22;2(4). 043119. https://doi.org/10.1103/PhysRevResearch.2.043119

Author

Borger, Anine L. ; Huang, Qian ; Hassager, Ole ; Kirkensgaard, Jacob J. K. ; Almdal, Kristoffer ; Mortensen, Kell. / Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts. In: Physical Review Research. 2020 ; Vol. 2, No. 4.

Bibtex

@article{ba75632b1ad34cf69156f14398998ed0,
title = "Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts",
abstract = "We study the relaxation of linear polymer molecules following fast uniaxial extension. Polystyrene melts of M-w = 80 kg/mol are elongated at a Rouse-Weissenberg number W-iR = 1.5 to Hencky strain epsilon = 3, where steady state is approached using a filament stretch rheometer. Samples were quenched for different duration of stress relaxation at constant Hencky strain to preserve molecular conformation by rapid cooling below the glass transition temperature. Expansion of ex situ small-angle neutron-scattering data in spherical harmonics shows experimental evidence for the decoupling of local and global relaxation phenomena from highly stretched states. This work demonstrates both that the decoupling can be seen in the spherical harmonics expansion and that it can be seen even for short chains provided the initial state is highly oriented.",
keywords = "ENTANGLED POLYMERS, STRESS-RELAXATION, SCATTERING, DYNAMICS, FLOW",
author = "Borger, {Anine L.} and Qian Huang and Ole Hassager and Kirkensgaard, {Jacob J. K.} and Kristoffer Almdal and Kell Mortensen",
year = "2020",
month = oct,
day = "22",
doi = "10.1103/PhysRevResearch.2.043119",
language = "English",
volume = "2",
journal = "Physical Review Research",
issn = "2643-1564",
publisher = "AMER PHYSICAL SOC",
number = "4",

}

RIS

TY - JOUR

T1 - Stretch and orientational mode decoupling in relaxation of highly stretched polymer melts

AU - Borger, Anine L.

AU - Huang, Qian

AU - Hassager, Ole

AU - Kirkensgaard, Jacob J. K.

AU - Almdal, Kristoffer

AU - Mortensen, Kell

PY - 2020/10/22

Y1 - 2020/10/22

N2 - We study the relaxation of linear polymer molecules following fast uniaxial extension. Polystyrene melts of M-w = 80 kg/mol are elongated at a Rouse-Weissenberg number W-iR = 1.5 to Hencky strain epsilon = 3, where steady state is approached using a filament stretch rheometer. Samples were quenched for different duration of stress relaxation at constant Hencky strain to preserve molecular conformation by rapid cooling below the glass transition temperature. Expansion of ex situ small-angle neutron-scattering data in spherical harmonics shows experimental evidence for the decoupling of local and global relaxation phenomena from highly stretched states. This work demonstrates both that the decoupling can be seen in the spherical harmonics expansion and that it can be seen even for short chains provided the initial state is highly oriented.

AB - We study the relaxation of linear polymer molecules following fast uniaxial extension. Polystyrene melts of M-w = 80 kg/mol are elongated at a Rouse-Weissenberg number W-iR = 1.5 to Hencky strain epsilon = 3, where steady state is approached using a filament stretch rheometer. Samples were quenched for different duration of stress relaxation at constant Hencky strain to preserve molecular conformation by rapid cooling below the glass transition temperature. Expansion of ex situ small-angle neutron-scattering data in spherical harmonics shows experimental evidence for the decoupling of local and global relaxation phenomena from highly stretched states. This work demonstrates both that the decoupling can be seen in the spherical harmonics expansion and that it can be seen even for short chains provided the initial state is highly oriented.

KW - ENTANGLED POLYMERS

KW - STRESS-RELAXATION

KW - SCATTERING

KW - DYNAMICS

KW - FLOW

U2 - 10.1103/PhysRevResearch.2.043119

DO - 10.1103/PhysRevResearch.2.043119

M3 - Journal article

VL - 2

JO - Physical Review Research

JF - Physical Review Research

SN - 2643-1564

IS - 4

M1 - 043119

ER -

ID: 255682142