Dipole moments of poly(methylmethacrylate)-poly(4-vinylpyridine) block copolymers

The mean-square dipole moments of poly(methylmethacrylate)-poly(4-vinylpyridine) block copolymers have been determined from dielectric constant measurements on dilute solutions in toluene at different temperatures in the range 30–65 °C. The temperature coefficient of the mean square dipole moment wa...

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Bibliographic Details
Published in:European polymer journal 1995-02, Vol.31 (2), p.183-187
Main Authors: Nugay, Nihan, Küçükyavuz, Zuhal
Format: Article
Language:English
Subjects:
Applied sciences
Electrical, magnetic and optical properties
Exact sciences and technology
Organic polymers
Physicochemistry of polymers
Properties and characterization
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Summary:The mean-square dipole moments of poly(methylmethacrylate)-poly(4-vinylpyridine) block copolymers have been determined from dielectric constant measurements on dilute solutions in toluene at different temperatures in the range 30–65 °C. The temperature coefficient of the mean square dipole moment was found to be positive. Dipole moment values for block copolymers show a linear dependence on the dipole moments of component homopolymers which indicates that the intermolecular interaction between the blocks are not as high as that of random or alternating copolymers. Results are in accordance with the prediction of rotational isomeric state theory.
ISSN:0014-3057
1873-1945
DOI:10.1016/0014-3057(94)00139-1