TY - JOUR
T1 - Transcrystallinity in aramid and carbon fiber reinforced nylon 66
T2 - Determining the lamellar orientation by synchrotron X-ray micro diffraction
AU - Feldman, Alexander Y.
AU - Fernanda Gonzalez, M.
AU - Wachtel, Ellen
AU - Moret, Mona P.
AU - Marom, Gad
PY - 2004/9/29
Y1 - 2004/9/29
N2 - This paper presents the structural details of nylon 66 transcrystallinity induced by aramid (kevlar 29, 49 and 149) and carbon (pitch based) fibers, as determined by high spatial resolution X-ray diffraction. Using stepwise scanning, the orientation of the lamellae in the transcrystalline layer was measured as a function of distance from the fiber. The main observation is that this orientation is distinct for each system and almost independent of distance from the fiber. Of particular interest is the bi-layered transcrystallinity formed on a surface treated kevlar 49 fiber, in which the lamellar a* axis is nearly perpendicular and at an angle of ∼12° to the fiber in the outer and inner layer, respectively. The crystallographic analysis generates grids of oriented lamellae with respect to the fiber axis.
AB - This paper presents the structural details of nylon 66 transcrystallinity induced by aramid (kevlar 29, 49 and 149) and carbon (pitch based) fibers, as determined by high spatial resolution X-ray diffraction. Using stepwise scanning, the orientation of the lamellae in the transcrystalline layer was measured as a function of distance from the fiber. The main observation is that this orientation is distinct for each system and almost independent of distance from the fiber. Of particular interest is the bi-layered transcrystallinity formed on a surface treated kevlar 49 fiber, in which the lamellar a* axis is nearly perpendicular and at an angle of ∼12° to the fiber in the outer and inner layer, respectively. The crystallographic analysis generates grids of oriented lamellae with respect to the fiber axis.
KW - Aramid fibers
KW - Nylon 66
KW - Transcrystallinity
UR - http://www.scopus.com/inward/record.url?scp=4644372559&partnerID=8YFLogxK
U2 - 10.1016/j.polymer.2004.08.027
DO - 10.1016/j.polymer.2004.08.027
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AN - SCOPUS:4644372559
SN - 0032-3861
VL - 45
SP - 7239
EP - 7245
JO - Polymer
JF - Polymer
IS - 21
ER -