Title :
Hydrogen bonding and Debye relaxation in nylon 11
Author :
Liang, Zicai ; Jiang, Bo ; Gu, Yuxing
Author_Institution :
Polymer Res. Inst., Sichuan Union Univ., Chengdu, China
Abstract :
A new dielectric relaxation called αH was observed in nylon 11. A dielectric relaxation strength as high as 25300 can be achieved. It is found that the relaxation activation energy Ea is 21.3 kcal/mole and the relaxation time τ is about 0.001 second near the melting point temperature of nylon 11. The Cole-Cole plots of ε\´ and ε" are approximately semi-circles. The dielectric spectra show that there is no ionic conduction contribution to the relaxation. This αH relaxation is designated as motion of free amide groups in nylon 11
Keywords :
dielectric losses; dielectric relaxation; ferroelectric materials; hydrogen bonds; permittivity; polymer structure; polymers; αH; 0.01 Hz to 10 kHz; 25 to 187 C; Cole-Cole plots; Debye relaxation; complex dielectric constant; dielectric relaxation; dielectric relaxation strength; dielectric spectra; ferroelectric polymer; free amide group motion; hydrogen bonding; melting point temperature; nylon 11; polyamide; relaxation activation energy; relaxation time; semicrystalline polymer; tan δ; temperature dependence; Annealing; Bonding; Dielectric constant; Dielectric measurements; Ferroelectric materials; Glass; Hydrogen; Polymers; Powders; Temperature;
Conference_Titel :
Electrets, 1996. (ISE 9), 9th International Symposium on
Conference_Location :
Shanghai
Print_ISBN :
0-7803-2695-4
DOI :
10.1109/ISE.1996.578165
