Dilute Solution Behavior of Asymmetric Three-Arm and Regular Three- and Twelve-Arm Polystyrene Stars

Nitya Khasat; Robert W. Pennisi; Nikos Hadjichristidis; Lewis J. Fetters

doi:10.1021/ma00182a042

Dilute Solution Behavior of Asymmetric Three-Arm and Regular Three- and Twelve-Arm Polystyrene Stars

Nitya Khasat^*, Robert W. Pennisi, Nikos Hadjichristidis, Lewis J. Fetters

^*Corresponding author for this work

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

114 Scopus citations

Abstract

The dilute solution characteristics of regular three- and twelve-arm and asymmetric three-arm polystyrene stars have been studied under θ conditions (cyclohexane) and in a good solvent (toluene). The parameters evaluatedinclude the intrinsic viscosities and for the regular stars the radii of gyration and the viscometric based radii. Thetwelvearm stars show the influence of high segment densities near the star core under θ conditions; i.e., g_θdecreases as arm molecular weight increases and approaches the random-walk prediction only at high-arm molecular weight. Additional parameters describing the regular and asymmetric star-shaped polymers are presented anddiscussed.

Original language	English (US)
Pages (from-to)	1100-1106
Number of pages	7
Journal	Macromolecules
Volume	21
Issue number	4
DOIs	https://doi.org/10.1021/ma00182a042
State	Published - 1988
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Dilute Solution Behavior of Asymmetric Three-Arm and Regular Three- and Twelve-Arm Polystyrene Stars",

abstract = "The dilute solution characteristics of regular three- and twelve-arm and asymmetric three-arm polystyrene stars have been studied under θ conditions (cyclohexane) and in a good solvent (toluene). The parameters evaluatedinclude the intrinsic viscosities and for the regular stars the radii of gyration and the viscometric based radii. Thetwelvearm stars show the influence of high segment densities near the star core under θ conditions; i.e., gθdecreases as arm molecular weight increases and approaches the random-walk prediction only at high-arm molecular weight. Additional parameters describing the regular and asymmetric star-shaped polymers are presented anddiscussed.",

author = "Nitya Khasat and Pennisi, {Robert W.} and Nikos Hadjichristidis and Fetters, {Lewis J.}",

year = "1988",

doi = "10.1021/ma00182a042",

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T1 - Dilute Solution Behavior of Asymmetric Three-Arm and Regular Three- and Twelve-Arm Polystyrene Stars

AU - Khasat, Nitya

AU - Pennisi, Robert W.

AU - Hadjichristidis, Nikos

AU - Fetters, Lewis J.

PY - 1988

Y1 - 1988

N2 - The dilute solution characteristics of regular three- and twelve-arm and asymmetric three-arm polystyrene stars have been studied under θ conditions (cyclohexane) and in a good solvent (toluene). The parameters evaluatedinclude the intrinsic viscosities and for the regular stars the radii of gyration and the viscometric based radii. Thetwelvearm stars show the influence of high segment densities near the star core under θ conditions; i.e., gθdecreases as arm molecular weight increases and approaches the random-walk prediction only at high-arm molecular weight. Additional parameters describing the regular and asymmetric star-shaped polymers are presented anddiscussed.

AB - The dilute solution characteristics of regular three- and twelve-arm and asymmetric three-arm polystyrene stars have been studied under θ conditions (cyclohexane) and in a good solvent (toluene). The parameters evaluatedinclude the intrinsic viscosities and for the regular stars the radii of gyration and the viscometric based radii. Thetwelvearm stars show the influence of high segment densities near the star core under θ conditions; i.e., gθdecreases as arm molecular weight increases and approaches the random-walk prediction only at high-arm molecular weight. Additional parameters describing the regular and asymmetric star-shaped polymers are presented anddiscussed.

UR - http://www.scopus.com/inward/record.url?scp=0023998126&partnerID=8YFLogxK

U2 - 10.1021/ma00182a042

DO - 10.1021/ma00182a042

M3 - Article

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SP - 1100

EP - 1106

JO - Macromolecules

JF - Macromolecules

IS - 4

ER -

Dilute Solution Behavior of Asymmetric Three-Arm and Regular Three- and Twelve-Arm Polystyrene Stars

Abstract

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