Polymer solution degradation. The combined effects of flow and temperature

K. A. Narh; J. A. Odell; A. J. Mueller; A. Keller

Polymer solution degradation. The combined effects of flow and temperature

K. A. Narh, J. A. Odell, A. J. Mueller, A. Keller

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

Abstract

We present initial results of the combined effects of elongational flow and elevated temperatures upon degradation of monodisperse atactic polystyrene solutions. An opposed jets apparatus is used, both to produce mechanical scission and to monitor the molecular weight distribution of the scission products. Between 25°C and 150°C degradation occurs as closely central scission of the molecules beyond a critical strain rate (E_f). E_f is found to be a decreasing function of temperature. At 150°C we present results for thermal degradation alone. All of these results correlate well with predictions based upon a thermally activated barrier to scission model.

Original language	English (US)
Pages (from-to)	2-5
Number of pages	4
Journal	Polymer communications Guildford
Volume	31
Issue number	1
State	Published - Jan 1990
Externally published	Yes

All Science Journal Classification (ASJC) codes

General Engineering

Cite this

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abstract = "We present initial results of the combined effects of elongational flow and elevated temperatures upon degradation of monodisperse atactic polystyrene solutions. An opposed jets apparatus is used, both to produce mechanical scission and to monitor the molecular weight distribution of the scission products. Between 25°C and 150°C degradation occurs as closely central scission of the molecules beyond a critical strain rate (Ef). Ef is found to be a decreasing function of temperature. At 150°C we present results for thermal degradation alone. All of these results correlate well with predictions based upon a thermally activated barrier to scission model.",

author = "Narh, {K. A.} and Odell, {J. A.} and Mueller, {A. J.} and A. Keller",

year = "1990",

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AU - Narh, K. A.

AU - Odell, J. A.

AU - Mueller, A. J.

AU - Keller, A.

PY - 1990/1

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N2 - We present initial results of the combined effects of elongational flow and elevated temperatures upon degradation of monodisperse atactic polystyrene solutions. An opposed jets apparatus is used, both to produce mechanical scission and to monitor the molecular weight distribution of the scission products. Between 25°C and 150°C degradation occurs as closely central scission of the molecules beyond a critical strain rate (Ef). Ef is found to be a decreasing function of temperature. At 150°C we present results for thermal degradation alone. All of these results correlate well with predictions based upon a thermally activated barrier to scission model.

AB - We present initial results of the combined effects of elongational flow and elevated temperatures upon degradation of monodisperse atactic polystyrene solutions. An opposed jets apparatus is used, both to produce mechanical scission and to monitor the molecular weight distribution of the scission products. Between 25°C and 150°C degradation occurs as closely central scission of the molecules beyond a critical strain rate (Ef). Ef is found to be a decreasing function of temperature. At 150°C we present results for thermal degradation alone. All of these results correlate well with predictions based upon a thermally activated barrier to scission model.

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Polymer solution degradation. The combined effects of flow and temperature

Abstract

All Science Journal Classification (ASJC) codes

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