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Conformational changes of polyacrylonitrile chains on swelling

✍ Scribed by E. Turska; J. Grobelny

Publisher
Elsevier Science
Year
1983
Tongue
English
Weight
426 KB
Volume
19
Category
Article
ISSN
0014-3057

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✦ Synopsis

Polyacrylonitrile (PAN) films were subjected to swelling in aqueous I2/KI solutions. The influence of some factors on the relation of equilibrium swelling degree vs the iodine concentration in water was found. In the first stage of swelling, a possibility of conformational changes of PAN chains was demonstrated on the basis of ~H BL NMR and the interpretation of i.r. spectra of swollen PAN. A significant influence of the value of equilibrium swelling degree on the values of the glass transition temperature and activation energy of the transition is discussed.

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