The dielectric properties of nylon 6,6/aramid fibre microcomposites in the presence of transcrystallinity

Study of the effect of atmospheric pressure air dielectric barrier discharge on nylon 6,6 foils

“…Arrhenius-like, with values 0.64 ± 0.01 eV for b relaxation and 0.38 ± 0.02 eV for g relaxation that are in agreement with values given in the literature [43]. Their magnitudes, which were determined as a temperature invariant D 3T, were 52 ± 12 K and 15.5 ± 6.3 K and the a parameters were 0.39 ± 0.02 for b and 0.38 ± 0.02 for g relaxation, respectively.…”

Amorphous and crystalline phase interaction during the Brill transition in nylon 66

“…In a recent study on the Brill transition in transcrystalline nylon 66 we pointed out that the explanation for the effect of the crystalline structure on this first order transition must be based on the existence of reciprocal interactions between the crystalline and amorphous phases [14], which corresponded to the finding that structural changes within the crystalline domains in the lamellae (as in the Brill transition) are accompanied by changes in the packing of the amorphous chain segments outside the lamellae [15]. According to the scientific literature, nylon 66 exhibits three loss peaks, labeled α, β and γ (see e.g., [16][17][18]), representing different processes in the amorphous phase. Perhaps the only reference to an additional peak (shoulder) was made by Takayanagi in his study of nylon 6 [19].…”

Dielectric properties of polyamide 6-montmorillonite nanocomposites

“…This relaxation is assigned to more co-operative motions of CH 2 sequences involving water molecules H-bonded to the free NH groups [8,13,1518,[22][23][24][25][26].…”