TY - JOUR
T1 - Relaxation peak broadening and polymer chain dynamics in aramid-fiber-reinforced nylon-66 microcomposites
AU - Ryabov, Ya E.
AU - Nuriel, H.
AU - Marom, G.
AU - Feldman, Yu
PY - 2003/2/1
Y1 - 2003/2/1
N2 - The relationship between the parameter of symmetric broadening of the glass-transition relaxation process and the structure of aramid-fiber-reinforced nylon-66 microcomposites is investigated in this article. The approach is based on a previously derived model that sets a quantitative interrelation between the Cole-Cole parameter α, the relaxation time, and the fractal dimension of a mobile polymer segment. The microcomposite, the dielectric response of which reflects the transcrystallinity effects, indeed exhibits significantly different values, such as higher Kirkwood correlation factor and α exponent values, in comparison with the control materials, and this indicates its different crystalline morphology and perhaps lower order in the amorphous phase. However, at this stage, it is still difficult to establish a quantitative relationship with the polymer chain dynamics.
AB - The relationship between the parameter of symmetric broadening of the glass-transition relaxation process and the structure of aramid-fiber-reinforced nylon-66 microcomposites is investigated in this article. The approach is based on a previously derived model that sets a quantitative interrelation between the Cole-Cole parameter α, the relaxation time, and the fractal dimension of a mobile polymer segment. The microcomposite, the dielectric response of which reflects the transcrystallinity effects, indeed exhibits significantly different values, such as higher Kirkwood correlation factor and α exponent values, in comparison with the control materials, and this indicates its different crystalline morphology and perhaps lower order in the amorphous phase. However, at this stage, it is still difficult to establish a quantitative relationship with the polymer chain dynamics.
KW - Dielectric properties
KW - Glass transition
KW - Nylon
KW - Reinforcement
UR - http://www.scopus.com/inward/record.url?scp=0037322050&partnerID=8YFLogxK
U2 - 10.1002/polb.10384
DO - 10.1002/polb.10384
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AN - SCOPUS:0037322050
SN - 0887-6266
VL - 41
SP - 217
EP - 223
JO - Journal of Polymer Science, Part B: Polymer Physics
JF - Journal of Polymer Science, Part B: Polymer Physics
IS - 3
ER -