TY - JOUR
T1 - Annealing of drawn monofilaments of liquid crystalline polymer vectra/vapor grown carbon fiber nanocomposites
AU - Kalfon-Cohen, Estelle
AU - Pegoretti, Alessandro
AU - Marom, Gad
PY - 2010/3/2
Y1 - 2010/3/2
N2 - The annealing treatment of drawn LCP nanocomposite monofilaments is discussed here. Upon annealing, an unstable structure is generated which presents a strong dependence on the annealing time sequence and temperature as observed by DSC. Moreover, it seems that increasing the draw down of the fiber restricts the formation of this new (unstable) structure. Based on dynamic mechanical analysis and on solid state 13C NMR, the nature of the newly-formed structure is elucidated, and based on sequence ordering within the non-oriented amorphous phase in the copolymer, a 10% change in the monomer proportion in the ordered phase is observed after annealing.
AB - The annealing treatment of drawn LCP nanocomposite monofilaments is discussed here. Upon annealing, an unstable structure is generated which presents a strong dependence on the annealing time sequence and temperature as observed by DSC. Moreover, it seems that increasing the draw down of the fiber restricts the formation of this new (unstable) structure. Based on dynamic mechanical analysis and on solid state 13C NMR, the nature of the newly-formed structure is elucidated, and based on sequence ordering within the non-oriented amorphous phase in the copolymer, a 10% change in the monomer proportion in the ordered phase is observed after annealing.
KW - Annealing
KW - Sequence ordering
KW - Thermotropic liquid crystal
UR - http://www.scopus.com/inward/record.url?scp=76749146386&partnerID=8YFLogxK
U2 - 10.1016/j.polymer.2010.01.016
DO - 10.1016/j.polymer.2010.01.016
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AN - SCOPUS:76749146386
SN - 0032-3861
VL - 51
SP - 1033
EP - 1041
JO - Polymer
JF - Polymer
IS - 5
ER -