Reactivity ratios and thermal and dielectric studies of n-butyl methacrylate and methacrylamide copolymers
Article first published online: 10 MAR 2003
Copyright © 1993 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 47, Issue 8, pages 1463–1468, 20 February 1993
How to Cite
Srinivasulu, B., Rao, P. R., Sundaram, E. V., Sathaiah, G. and Sirdeshmukh, L. (1993), Reactivity ratios and thermal and dielectric studies of n-butyl methacrylate and methacrylamide copolymers. J. Appl. Polym. Sci., 47: 1463–1468. doi: 10.1002/app.1993.070470817
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 4 MAY 1992
- Manuscript Received: 19 FEB 1992
Free-radical copolymerization of n-butyl methacrylate (B) and methacrylamide (M) was carried out in the presence of 2,2'-azobisisobutyronitrile (AIBN) in dimethyl formamide (DMF) at 60°C. The percentage composition of the copolymers was established by elemental analysis. The reactivity ratios as determined by the Finemann—Ross (F—R) and the Kelen–Tüdős (K—T) methods are r1 (B) = 2.75 ± 0.01, r2 (M) = 0.2 ± 0.01 and r1 = 2.70 ± 0.05, r2 = 0.19 ± 0.02, respectively. The copolymers were characterized by IR, 1H-NMR, thermal, and dielectric studies. Glass transition temperature (Tg) values were determined by DSC. Dielectric studies were carried out to understand the segmental motions and the effect of composition on dielectric loss. © 1993 John Wiley & Sons, Inc.