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Mutual diffusion in blends of long and short entangled polymer chains

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Jordan, E. A., Ball, Robin, Donald, A. M., Fetters, Lewis J., Jones, Richard A. L. and Klein, Jacob (1988) Mutual diffusion in blends of long and short entangled polymer chains. Macromolecules, Vol.21 (No.1). pp. 235-239. doi:10.1021/ma00179a045

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Official URL: http://dx.doi.org/10.1021/ma00179a045

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Abstract

We have used infrared microdensitometry to study the mutual diffusion across an originally
sharp interface between two saturated polybutadienes of degrees of polymerization NA and N B (>>Ne, the
entanglement length) for three different ratios N A / N B . The extent of diffusion broadening suggests that the
mutual diffusion coefficient is controlled by the mobility of the faster moving (shorter) polymer chains, indicating
that convective flow may be important in such mixing phenomena.

Item Type: Journal Article
Subjects: Q Science > QC Physics
Q Science > QD Chemistry
Divisions: Faculty of Science > Physics
Library of Congress Subject Headings (LCSH): Polymers, Diffusion, Surfaces (Physics), Interfaces (Physical sciences), Polymer melting
Journal or Publication Title: Macromolecules
Publisher: American Chemical Society
ISSN: 0024-9297
Official Date: January 1988
Dates:
DateEvent
January 1988Published
Volume: Vol.21
Number: No.1
Page Range: pp. 235-239
DOI: 10.1021/ma00179a045
Status: Peer Reviewed
Publication Status: Published

Data sourced from Thomson Reuters' Web of Knowledge

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