Dielectric Relaxation in Some Allyl Compounds

The possibility of a variety of modes of re-orientation of molecular dipoles, makes the dielectric study of aliphatic molecules interesting [1]. The present paper reports the work aimed at studying the dielectric behaviour of three allyl ethers viz., p-phenyl allyl ether, p-cresyl allyl ether and p-chlorophenyl allyl ether at five frequencies in mm and cm regions at 30°, 50° and 70°C. A new curve fitting technique for evaluating complex permittivity at 4.5 mm for free space method is also described.