Poly methacrylate s Containing Saturated Cyclic Side Chains

2 Poly(methacrylate)s Containing Saturated Cyclic Side Chains 

1 Effect of the Spacer Group on Dynamic Mechanical and Dielectric Absorptions 

P relaxation is observed as a shoulder of the a relaxation. This behavior preclude the possibility to perform an exhaustive analysis of the j3 relaxation [33], The 5 and y relaxations are commonly deconvoluted for the Fuoss-Kirkwood [69] empirical expression  

Where Ea is the activation energy, R is the gas constant, Tmax is the temperature where E has a maximum value (Zimax) and mis a parameter (0 m 1) dealing with the broadness of the peak. On the other hand the strength of the two relaxations (Aii) can be calculated using the equation  

In the case of PCHEM and PCHPM the values of m parameter are compiled on Tables 2.1 and 2.2. These values shows that the y relaxation is broader than the 8 relaxation. This result is indicative that probably the y relaxation involve a more complex molecular motion than 8 relaxation. 

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