The effect of hydrostatic pressure on local polymer dynamics in polyisoprene

Benny D. Freeman; Liliane Bokobza; Lucien Monnerie

doi:10.1016/0032-3861(90)90251-S

The effect of hydrostatic pressure on local polymer dynamics in polyisoprene

Benny D. Freeman
, Liliane Bokobza
, Lucien Monnerie

Research output: Contribution to journal › Article › Research › peer-review

7 Citations (Scopus)

Abstract

The effect of hydrostatic pressure on the local molecular motion in bulk polyisoprene (M_w = 1.4 × 10⁶) has been studied by measuring the pressure dependence of the fluorescence lifetime of the intramolecular excimer-forming probe molecule, meso-2,4-di(N-carbazolyl)pentane, dissolved in the polymer. The experiments were performed at 323K and covered a pressure range of 1 to 3000 bar. The results are compared with previous mechanical spectroscopy and excimer-based measurements of polymer dynamics. The range of frequency of polymer motion probed in these experiments was insufficient to discriminate between several empirical models of the pressure dependence of polymer dynamics.

Original language	English
Pages (from-to)	1045-1050
Number of pages	6
Journal	Polymer
Volume	31
Issue number	6
DOIs	https://doi.org/10.1016/0032-3861(90)90251-S
Publication status	Published - Jun 1990
Externally published	Yes

Keywords

dynamics
hydrostatic pressure effects
molecular motion
polyisoprene

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10.1016/0032-3861(90)90251-S

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title = "The effect of hydrostatic pressure on local polymer dynamics in polyisoprene",

abstract = "The effect of hydrostatic pressure on the local molecular motion in bulk polyisoprene (Mw = 1.4 × 106) has been studied by measuring the pressure dependence of the fluorescence lifetime of the intramolecular excimer-forming probe molecule, meso-2,4-di(N-carbazolyl)pentane, dissolved in the polymer. The experiments were performed at 323K and covered a pressure range of 1 to 3000 bar. The results are compared with previous mechanical spectroscopy and excimer-based measurements of polymer dynamics. The range of frequency of polymer motion probed in these experiments was insufficient to discriminate between several empirical models of the pressure dependence of polymer dynamics.",

keywords = "dynamics, hydrostatic pressure effects, molecular motion, polyisoprene",

author = "Freeman, \{Benny D.\} and Liliane Bokobza and Lucien Monnerie",

note = "Funding Information: Helpful discussions with Dr Jean-Louis Viovy concerning the data analysis are gratefully acknowledged. The assistance of Mr Christophe Le Menestrel and Mr Thierry Villette with the experimental measurements was sincerely appreciated. The material reported here is based upon work partially supported by the North Atlantic Treaty Organization under a Postdoctoral Fellowship awarded to BF in 1987. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.",

year = "1990",

month = jun,

doi = "10.1016/0032-3861(90)90251-S",

language = "English",

volume = "31",

pages = "1045--1050",

journal = "Polymer",

issn = "0032-3861",

publisher = "Elsevier",

number = "6",

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TY - JOUR

T1 - The effect of hydrostatic pressure on local polymer dynamics in polyisoprene

AU - Freeman, Benny D.

AU - Bokobza, Liliane

AU - Monnerie, Lucien

N1 - Funding Information: Helpful discussions with Dr Jean-Louis Viovy concerning the data analysis are gratefully acknowledged. The assistance of Mr Christophe Le Menestrel and Mr Thierry Villette with the experimental measurements was sincerely appreciated. The material reported here is based upon work partially supported by the North Atlantic Treaty Organization under a Postdoctoral Fellowship awarded to BF in 1987. Copyright: Copyright 2014 Elsevier B.V., All rights reserved.

PY - 1990/6

Y1 - 1990/6

N2 - The effect of hydrostatic pressure on the local molecular motion in bulk polyisoprene (Mw = 1.4 × 106) has been studied by measuring the pressure dependence of the fluorescence lifetime of the intramolecular excimer-forming probe molecule, meso-2,4-di(N-carbazolyl)pentane, dissolved in the polymer. The experiments were performed at 323K and covered a pressure range of 1 to 3000 bar. The results are compared with previous mechanical spectroscopy and excimer-based measurements of polymer dynamics. The range of frequency of polymer motion probed in these experiments was insufficient to discriminate between several empirical models of the pressure dependence of polymer dynamics.

AB - The effect of hydrostatic pressure on the local molecular motion in bulk polyisoprene (Mw = 1.4 × 106) has been studied by measuring the pressure dependence of the fluorescence lifetime of the intramolecular excimer-forming probe molecule, meso-2,4-di(N-carbazolyl)pentane, dissolved in the polymer. The experiments were performed at 323K and covered a pressure range of 1 to 3000 bar. The results are compared with previous mechanical spectroscopy and excimer-based measurements of polymer dynamics. The range of frequency of polymer motion probed in these experiments was insufficient to discriminate between several empirical models of the pressure dependence of polymer dynamics.

KW - dynamics

KW - hydrostatic pressure effects

KW - molecular motion

KW - polyisoprene

UR - https://www.scopus.com/pages/publications/0025436660

U2 - 10.1016/0032-3861(90)90251-S

DO - 10.1016/0032-3861(90)90251-S

M3 - Article

AN - SCOPUS:0025436660

SN - 0032-3861

VL - 31

SP - 1045

EP - 1050

JO - Polymer

JF - Polymer

IS - 6

ER -

The effect of hydrostatic pressure on local polymer dynamics in polyisoprene

Abstract

Keywords

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