Gel point of a PDMS model network polymer: Comparison of experiment with model predictions

Sundar K. Venkataraman; Larry Coyne; Francois Chambon; Moshe Gottlieb; H. Henning Winter

Gel point of a PDMS model network polymer: Comparison of experiment with model predictions

Sundar K. Venkataraman, Larry Coyne, Francois Chambon, Moshe Gottlieb, H. Henning Winter

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

Abstract

A model network polymer was used to measure the critical extent of reaction, p_c, at the liquid-solid transition point, the gel point. The model polymer system is composed of a vinyl-terminated polydimethylsiloxane (PDMS) prepolymer and a siloxane crosslinker with an average functionality very close to the ideal value of 4. Molecular weight of the PDMS as measured by GPC agrees with values from intrinsic viscosity and Vapor Pressure Osmometry (VPO). The gel point of the crosslinking system was defined as the instant at which the viscoelastic sample exhibits power law behavior. The extent of reaction p_c=p(t_c) was measured by FTIR, and compared to the value predicted by mean field theories. The measured value of p_c=0.5775±0.01 agrees extremely well with the predicted value.

Original language	English
Pages (from-to)	367
Number of pages	1
Journal	Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering
Volume	58
State	Published - 1 Dec 1988
Externally published	Yes
Event	Third Chemical Congress of North America - Toronto, Ont, Can Duration: 6 Jun 1988 → 10 Jun 1988

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Polymers and Plastics

Cite this

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title = "Gel point of a PDMS model network polymer: Comparison of experiment with model predictions",

abstract = "A model network polymer was used to measure the critical extent of reaction, pc, at the liquid-solid transition point, the gel point. The model polymer system is composed of a vinyl-terminated polydimethylsiloxane (PDMS) prepolymer and a siloxane crosslinker with an average functionality very close to the ideal value of 4. Molecular weight of the PDMS as measured by GPC agrees with values from intrinsic viscosity and Vapor Pressure Osmometry (VPO). The gel point of the crosslinking system was defined as the instant at which the viscoelastic sample exhibits power law behavior. The extent of reaction pc=p(tc) was measured by FTIR, and compared to the value predicted by mean field theories. The measured value of pc=0.5775±0.01 agrees extremely well with the predicted value.",

author = "Venkataraman, {Sundar K.} and Larry Coyne and Francois Chambon and Moshe Gottlieb and Winter, {H. Henning}",

year = "1988",

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language = "English",

volume = "58",

pages = "367",

journal = "Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering",

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note = "Third Chemical Congress of North America ; Conference date: 06-06-1988 Through 10-06-1988",

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Gel point of a PDMS model network polymer: Comparison of experiment with model predictions. / Venkataraman, Sundar K.; Coyne, Larry; Chambon, Francois et al.
In: Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering, Vol. 58, 01.12.1988, p. 367.

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

TY - JOUR

T1 - Gel point of a PDMS model network polymer

T2 - Third Chemical Congress of North America

AU - Venkataraman, Sundar K.

AU - Coyne, Larry

AU - Chambon, Francois

AU - Gottlieb, Moshe

AU - Winter, H. Henning

PY - 1988/12/1

Y1 - 1988/12/1

N2 - A model network polymer was used to measure the critical extent of reaction, pc, at the liquid-solid transition point, the gel point. The model polymer system is composed of a vinyl-terminated polydimethylsiloxane (PDMS) prepolymer and a siloxane crosslinker with an average functionality very close to the ideal value of 4. Molecular weight of the PDMS as measured by GPC agrees with values from intrinsic viscosity and Vapor Pressure Osmometry (VPO). The gel point of the crosslinking system was defined as the instant at which the viscoelastic sample exhibits power law behavior. The extent of reaction pc=p(tc) was measured by FTIR, and compared to the value predicted by mean field theories. The measured value of pc=0.5775±0.01 agrees extremely well with the predicted value.

AB - A model network polymer was used to measure the critical extent of reaction, pc, at the liquid-solid transition point, the gel point. The model polymer system is composed of a vinyl-terminated polydimethylsiloxane (PDMS) prepolymer and a siloxane crosslinker with an average functionality very close to the ideal value of 4. Molecular weight of the PDMS as measured by GPC agrees with values from intrinsic viscosity and Vapor Pressure Osmometry (VPO). The gel point of the crosslinking system was defined as the instant at which the viscoelastic sample exhibits power law behavior. The extent of reaction pc=p(tc) was measured by FTIR, and compared to the value predicted by mean field theories. The measured value of pc=0.5775±0.01 agrees extremely well with the predicted value.

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M3 - Conference article

AN - SCOPUS:0024132590

SN - 0743-0515

VL - 58

SP - 367

JO - Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering

JF - Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering

Y2 - 6 June 1988 through 10 June 1988

ER -

Gel point of a PDMS model network polymer: Comparison of experiment with model predictions

Abstract

ASJC Scopus subject areas

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