The depolarization thermocurrent (DTC) method was used to resolve the dielectric relaxation spectrum in polyglycine I and II between liquid nitrogen temperature and 150°C. The results are compared with those obtained by other dielectric methods. In the two forms of polyglycine, the same relaxation has been observed at very low temperatures. At higher temperatures an influence of moisture on the mechanisms has been observed; a relaxation existing in ice is noticed also in dry polyglycine I. Relaxations studied by DTC near or above room temperature, seem to be related with measured de conductivity and give information concerning the nature of charge carriers.
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Chatain et al. (1973) studied this question.
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