Rheological studies of polycaprolactone in supercritical CO2

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Rheological studies of polycaprolactone in supercritical CO2. / Kelly, Catherine; Murphy, Shona H.; Leeke, Gary; Howdle, Steven M.; Shakesheff, Kevin M.; Jenkins, Michael.

In: European Polymer Journal, Vol. 49, No. 2, 01.02.2013, p. 464-470.

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Kelly, Catherine ; Murphy, Shona H. ; Leeke, Gary ; Howdle, Steven M. ; Shakesheff, Kevin M. ; Jenkins, Michael. / Rheological studies of polycaprolactone in supercritical CO2. In: European Polymer Journal. 2013 ; Vol. 49, No. 2. pp. 464-470.

Bibtex

@article{02fefe3194b24eff820605cdfaaff062,
title = "Rheological studies of polycaprolactone in supercritical CO2",
abstract = "A high pressure parallel plate rheometer is utilised to probe the rheological properties of polycaprolactone (PCL) over a range of temperatures (80 to 120 °C) and CO2 pressures (atmospheric to 100 bar). Interpretation of storage/loss modulus against angular frequency plots show that the reptation time of PCL can be significantly reduced by the addition of 60 bar CO2. This reduction is equivalent to heating the polymer by 20 °C. Application of a time/temperature superposition, coupled with the Arrhenius equation, shows that the addition of CO2 also lowers the activation energy to flow from 31.3 to approximately 21 kJ mol-­‐1.",
keywords = "reptation, Rheology, Supercritical CO2, polycaprolactone",
author = "Catherine Kelly and Murphy, {Shona H.} and Gary Leeke and Howdle, {Steven M.} and Shakesheff, {Kevin M.} and Michael Jenkins",
year = "2013",
month = feb,
day = "1",
doi = "10.1016/j.eurpolymj.2012.11.021",
language = "English",
volume = "49",
pages = "464--470",
journal = "European Polymer Journal",
issn = "0014-3057",
publisher = "Elsevier",
number = "2",

}

RIS

TY - JOUR

T1 - Rheological studies of polycaprolactone in supercritical CO2

AU - Kelly, Catherine

AU - Murphy, Shona H.

AU - Leeke, Gary

AU - Howdle, Steven M.

AU - Shakesheff, Kevin M.

AU - Jenkins, Michael

PY - 2013/2/1

Y1 - 2013/2/1

N2 - A high pressure parallel plate rheometer is utilised to probe the rheological properties of polycaprolactone (PCL) over a range of temperatures (80 to 120 °C) and CO2 pressures (atmospheric to 100 bar). Interpretation of storage/loss modulus against angular frequency plots show that the reptation time of PCL can be significantly reduced by the addition of 60 bar CO2. This reduction is equivalent to heating the polymer by 20 °C. Application of a time/temperature superposition, coupled with the Arrhenius equation, shows that the addition of CO2 also lowers the activation energy to flow from 31.3 to approximately 21 kJ mol-­‐1.

AB - A high pressure parallel plate rheometer is utilised to probe the rheological properties of polycaprolactone (PCL) over a range of temperatures (80 to 120 °C) and CO2 pressures (atmospheric to 100 bar). Interpretation of storage/loss modulus against angular frequency plots show that the reptation time of PCL can be significantly reduced by the addition of 60 bar CO2. This reduction is equivalent to heating the polymer by 20 °C. Application of a time/temperature superposition, coupled with the Arrhenius equation, shows that the addition of CO2 also lowers the activation energy to flow from 31.3 to approximately 21 kJ mol-­‐1.

KW - reptation

KW - Rheology

KW - Supercritical CO2

KW - polycaprolactone

U2 - 10.1016/j.eurpolymj.2012.11.021

DO - 10.1016/j.eurpolymj.2012.11.021

M3 - Article

VL - 49

SP - 464

EP - 470

JO - European Polymer Journal

JF - European Polymer Journal

SN - 0014-3057

IS - 2

ER -