Dielectric Behavior of Modified Cellulose

摘要

The dielectric constants ε’, the dielectric loss ε" and the activation energy of dielectric relaxation of silylated cellulose were measured within the frequency range 105 to 107 Hz and the temperature range from 10 to 50℃. The test samples were activated cellulose with ethylene diamine, with sodium hydroxide and inactivated cellulose before and after silylation. The measurements were carried out using a multi-deka-meter. Cellulose molecules are more activated by treatment with ethylene diamine than with sodium hydroxide. Generally, silylation causes a marked decrease of the dielectric constant and dielectric loss, meanwhile the silylated samples are affected with the pretreatment of linters with sodium hydroxide and ethylene diamine.