Measurement and processing of relaxation times T1 and T2 during the UV polymerization process

In this paper are introduced basic magnetic resonance (MR) methods for measuring the properties of the conductive gel structure during polymerization, particularly relaxation times T₁, T₂. Gel electrolytes based on the NaClO₄ inorganic salt was measured. The measurement deals with ²³Na nuclei. In our case to measure relaxation time T₂, the Hahn echo was used. To measure relaxation time T₁, the IR techniques (Inversion Recovery) was used. The value of relaxation time T₂ is obtained by approximation of spectral lines and the value of relaxation time T₂ is obtained by approximation of spin echo decline signal with two exponentials using a genetic algorithm for both times. The change of relaxation times T₂ and T₁ of ²³Na nuclei during polymerization process indicate a change in the internal structure and chemical composition of gel electrolytes based on NaClO₄.