Self-Diffusion of Three-Armed Star and Linear Polybutadienes and Polystyrenes in Tetrachloromethane Solution

Ernst von Meerwall; David H. Tomich; James Grigsby; Robert W. Pennisi; Lewis J. Fetters; Nikos Hadjichristidis

doi:10.1021/ma00245a007

Self-Diffusion of Three-Armed Star and Linear Polybutadienes and Polystyrenes in Tetrachloromethane Solution

Ernst von Meerwall, David H. Tomich, James Grigsby, Robert W. Pennisi, Lewis J. Fetters, Nikos Hadjichristidis

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

31 Scopus citations

Abstract

We have used the pulsed-gradient spin-echo method to measure the self-diffusion of linear and three-armed star-branched polystyrenes and polybutadienes (3 × 10³  M  10⁶) dissolved in CC1₄ at 50 °C. We detect no evidence of cooperative diffusion in the semidilute regime. The polymer diffusivities at infinite dilution obey Flory's theory, while their concentration dependences in the dilute regime follow a Pyun-Fixman model. No differences between linear and three-armed molecules are observed in this experiment.

Original language	English (US)
Pages (from-to)	1715-1722
Number of pages	8
Journal	Macromolecules
Volume	16
Issue number	11
DOIs	https://doi.org/10.1021/ma00245a007
State	Published - Nov 1983
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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title = "Self-Diffusion of Three-Armed Star and Linear Polybutadienes and Polystyrenes in Tetrachloromethane Solution",

abstract = "We have used the pulsed-gradient spin-echo method to measure the self-diffusion of linear and three-armed star-branched polystyrenes and polybutadienes (3 × 103  M  106) dissolved in CC14 at 50 °C. We detect no evidence of cooperative diffusion in the semidilute regime. The polymer diffusivities at infinite dilution obey Flory's theory, while their concentration dependences in the dilute regime follow a Pyun-Fixman model. No differences between linear and three-armed molecules are observed in this experiment.",

author = "{von Meerwall}, Ernst and Tomich, {David H.} and James Grigsby and Pennisi, {Robert W.} and Fetters, {Lewis J.} and Nikos Hadjichristidis",

year = "1983",

month = nov,

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T1 - Self-Diffusion of Three-Armed Star and Linear Polybutadienes and Polystyrenes in Tetrachloromethane Solution

AU - von Meerwall, Ernst

AU - Tomich, David H.

AU - Grigsby, James

AU - Pennisi, Robert W.

AU - Fetters, Lewis J.

AU - Hadjichristidis, Nikos

PY - 1983/11

Y1 - 1983/11

N2 - We have used the pulsed-gradient spin-echo method to measure the self-diffusion of linear and three-armed star-branched polystyrenes and polybutadienes (3 × 103  M  106) dissolved in CC14 at 50 °C. We detect no evidence of cooperative diffusion in the semidilute regime. The polymer diffusivities at infinite dilution obey Flory's theory, while their concentration dependences in the dilute regime follow a Pyun-Fixman model. No differences between linear and three-armed molecules are observed in this experiment.

AB - We have used the pulsed-gradient spin-echo method to measure the self-diffusion of linear and three-armed star-branched polystyrenes and polybutadienes (3 × 103  M  106) dissolved in CC14 at 50 °C. We detect no evidence of cooperative diffusion in the semidilute regime. The polymer diffusivities at infinite dilution obey Flory's theory, while their concentration dependences in the dilute regime follow a Pyun-Fixman model. No differences between linear and three-armed molecules are observed in this experiment.

UR - http://www.scopus.com/inward/record.url?scp=0010366182&partnerID=8YFLogxK

U2 - 10.1021/ma00245a007

DO - 10.1021/ma00245a007

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SN - 0024-9297

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SP - 1715

EP - 1722

JO - Macromolecules

JF - Macromolecules

IS - 11

ER -

Self-Diffusion of Three-Armed Star and Linear Polybutadienes and Polystyrenes in Tetrachloromethane Solution

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