Solvent and Temperature Influences on Polystyrene Unperturbed Dimensions

Jimmy W. Mays; Nikos Hadjichristidis; Lewis J. Fetters

doi:10.1021/ma00153a029

Solvent and Temperature Influences on Polystyrene Unperturbed Dimensions

Jimmy W. Mays, Nikos Hadjichristidis, Lewis J. Fetters

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72 Scopus citations

Abstract

The unperturbed chain dimensions of near-monodisperse atactic polystyrenes were evaluated from intrinsic viscosity measurements in 12 different solvents under θ or near-θ conditions over the temperature range 8.5-75.0 °C. In consonance with the indications of other workers, larger values of unperturbed dimensions were found in cyclic hydrocarbon solvents than in other ideal solvents at similar temperatures. Negative values for the temperature coefficient of chain dimensions were found within the three solvent series examined. Under conditions where specific solvent effects are eliminated or minimized, measurements yielded results in excellent agreement with the theoretical predictions for atactic polystyrene, i.e., d In (r²)₀/dt = -1.1 X 10^-3 deg^-1.

Original language	English (US)
Pages (from-to)	2231-2236
Number of pages	6
Journal	Macromolecules
Volume	18
Issue number	11
DOIs	https://doi.org/10.1021/ma00153a029
State	Published - Nov 1985
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Solvent and Temperature Influences on Polystyrene Unperturbed Dimensions",

abstract = "The unperturbed chain dimensions of near-monodisperse atactic polystyrenes were evaluated from intrinsic viscosity measurements in 12 different solvents under θ or near-θ conditions over the temperature range 8.5-75.0 °C. In consonance with the indications of other workers, larger values of unperturbed dimensions were found in cyclic hydrocarbon solvents than in other ideal solvents at similar temperatures. Negative values for the temperature coefficient of chain dimensions were found within the three solvent series examined. Under conditions where specific solvent effects are eliminated or minimized, measurements yielded results in excellent agreement with the theoretical predictions for atactic polystyrene, i.e., d In (r2)0/dt = -1.1 X 10-3 deg-1.",

author = "Mays, {Jimmy W.} and Nikos Hadjichristidis and Fetters, {Lewis J.}",

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AU - Mays, Jimmy W.

AU - Hadjichristidis, Nikos

AU - Fetters, Lewis J.

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Y1 - 1985/11

N2 - The unperturbed chain dimensions of near-monodisperse atactic polystyrenes were evaluated from intrinsic viscosity measurements in 12 different solvents under θ or near-θ conditions over the temperature range 8.5-75.0 °C. In consonance with the indications of other workers, larger values of unperturbed dimensions were found in cyclic hydrocarbon solvents than in other ideal solvents at similar temperatures. Negative values for the temperature coefficient of chain dimensions were found within the three solvent series examined. Under conditions where specific solvent effects are eliminated or minimized, measurements yielded results in excellent agreement with the theoretical predictions for atactic polystyrene, i.e., d In (r2)0/dt = -1.1 X 10-3 deg-1.

AB - The unperturbed chain dimensions of near-monodisperse atactic polystyrenes were evaluated from intrinsic viscosity measurements in 12 different solvents under θ or near-θ conditions over the temperature range 8.5-75.0 °C. In consonance with the indications of other workers, larger values of unperturbed dimensions were found in cyclic hydrocarbon solvents than in other ideal solvents at similar temperatures. Negative values for the temperature coefficient of chain dimensions were found within the three solvent series examined. Under conditions where specific solvent effects are eliminated or minimized, measurements yielded results in excellent agreement with the theoretical predictions for atactic polystyrene, i.e., d In (r2)0/dt = -1.1 X 10-3 deg-1.

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JO - Macromolecules

JF - Macromolecules

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ER -

Solvent and Temperature Influences on Polystyrene Unperturbed Dimensions

Abstract

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