On the universality in the extensional rheology of monodisperse polymer melts and oligomer dilutions thereof

Henrik Rasmussen*, Sara Lindeblad Wingstrand, Ole Hassager

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The startup and steady extensional viscosities were measured on two narrow molar mass distributed (NMMD) poly(methyl methacrylates) (PMMA) diluted in 57% 2.1 kg/mole oligomer methyl methacrylates. The oligomer is short enough to be random configured and un-entangled though it is still a Kuhn chain. The weight-based average molecular weights of the PMMAs are 86 kg/mole and 270 kg/mole with polydispersites of 1.08 and 1.09 respectively. The extensional viscosities were in theoretical agreement with a constant ‘interchain pressure’ model, representing the maximal level of strain hardening in a Kuhn fluid. This has been observed for similar (styrene) oligomer diluted NMMD polystyrenes before, when the styrene oligomers were Kuhn chains. The original ‘interchain pressure’ model by Marrucci and Ianniruberto (Macromolecules 37(10):3934–3942, 2004), represents the minimal level of strain hardening in a Kuhn fluid. It has been shown previously to predict the extensional viscosities of NMMD polystyrene melts, and it is also in agreement with the extensional viscosities of the 86 kg/mole NMMD PMMA melt as well.
Original languageEnglish
JournalRheologica Acta
Volume58
Issue number6-7
Pages (from-to)333-340
ISSN0035-4511
DOIs
Publication statusPublished - 2019

Keywords

  • Poly(methyl methacrylates)
  • Monodisperse polymer melts
  • Oligomer dilutions
  • Extensional rheology
  • Interchain pressure

Cite this

Rasmussen, Henrik ; Wingstrand, Sara Lindeblad ; Hassager, Ole. / On the universality in the extensional rheology of monodisperse polymer melts and oligomer dilutions thereof. In: Rheologica Acta. 2019 ; Vol. 58, No. 6-7. pp. 333-340.
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abstract = "The startup and steady extensional viscosities were measured on two narrow molar mass distributed (NMMD) poly(methyl methacrylates) (PMMA) diluted in 57{\%} 2.1 kg/mole oligomer methyl methacrylates. The oligomer is short enough to be random configured and un-entangled though it is still a Kuhn chain. The weight-based average molecular weights of the PMMAs are 86 kg/mole and 270 kg/mole with polydispersites of 1.08 and 1.09 respectively. The extensional viscosities were in theoretical agreement with a constant ‘interchain pressure’ model, representing the maximal level of strain hardening in a Kuhn fluid. This has been observed for similar (styrene) oligomer diluted NMMD polystyrenes before, when the styrene oligomers were Kuhn chains. The original ‘interchain pressure’ model by Marrucci and Ianniruberto (Macromolecules 37(10):3934–3942, 2004), represents the minimal level of strain hardening in a Kuhn fluid. It has been shown previously to predict the extensional viscosities of NMMD polystyrene melts, and it is also in agreement with the extensional viscosities of the 86 kg/mole NMMD PMMA melt as well.",
keywords = "Poly(methyl methacrylates), Monodisperse polymer melts, Oligomer dilutions, Extensional rheology, Interchain pressure",
author = "Henrik Rasmussen and Wingstrand, {Sara Lindeblad} and Ole Hassager",
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On the universality in the extensional rheology of monodisperse polymer melts and oligomer dilutions thereof. / Rasmussen, Henrik; Wingstrand, Sara Lindeblad; Hassager, Ole.

In: Rheologica Acta, Vol. 58, No. 6-7, 2019, p. 333-340.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - On the universality in the extensional rheology of monodisperse polymer melts and oligomer dilutions thereof

AU - Rasmussen, Henrik

AU - Wingstrand, Sara Lindeblad

AU - Hassager, Ole

PY - 2019

Y1 - 2019

N2 - The startup and steady extensional viscosities were measured on two narrow molar mass distributed (NMMD) poly(methyl methacrylates) (PMMA) diluted in 57% 2.1 kg/mole oligomer methyl methacrylates. The oligomer is short enough to be random configured and un-entangled though it is still a Kuhn chain. The weight-based average molecular weights of the PMMAs are 86 kg/mole and 270 kg/mole with polydispersites of 1.08 and 1.09 respectively. The extensional viscosities were in theoretical agreement with a constant ‘interchain pressure’ model, representing the maximal level of strain hardening in a Kuhn fluid. This has been observed for similar (styrene) oligomer diluted NMMD polystyrenes before, when the styrene oligomers were Kuhn chains. The original ‘interchain pressure’ model by Marrucci and Ianniruberto (Macromolecules 37(10):3934–3942, 2004), represents the minimal level of strain hardening in a Kuhn fluid. It has been shown previously to predict the extensional viscosities of NMMD polystyrene melts, and it is also in agreement with the extensional viscosities of the 86 kg/mole NMMD PMMA melt as well.

AB - The startup and steady extensional viscosities were measured on two narrow molar mass distributed (NMMD) poly(methyl methacrylates) (PMMA) diluted in 57% 2.1 kg/mole oligomer methyl methacrylates. The oligomer is short enough to be random configured and un-entangled though it is still a Kuhn chain. The weight-based average molecular weights of the PMMAs are 86 kg/mole and 270 kg/mole with polydispersites of 1.08 and 1.09 respectively. The extensional viscosities were in theoretical agreement with a constant ‘interchain pressure’ model, representing the maximal level of strain hardening in a Kuhn fluid. This has been observed for similar (styrene) oligomer diluted NMMD polystyrenes before, when the styrene oligomers were Kuhn chains. The original ‘interchain pressure’ model by Marrucci and Ianniruberto (Macromolecules 37(10):3934–3942, 2004), represents the minimal level of strain hardening in a Kuhn fluid. It has been shown previously to predict the extensional viscosities of NMMD polystyrene melts, and it is also in agreement with the extensional viscosities of the 86 kg/mole NMMD PMMA melt as well.

KW - Poly(methyl methacrylates)

KW - Monodisperse polymer melts

KW - Oligomer dilutions

KW - Extensional rheology

KW - Interchain pressure

U2 - 10.1007/s00397-019-01156-w

DO - 10.1007/s00397-019-01156-w

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SP - 333

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JO - Rheologica Acta

JF - Rheologica Acta

SN - 0035-4511

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