Annealing of drawn monofilaments of liquid crystalline polymer vectra/vapor grown carbon fiber nanocomposites

Estelle Kalfon-Cohen; Alessandro Pegoretti; Gad Marom

doi:10.1016/j.polymer.2010.01.016

Annealing of drawn monofilaments of liquid crystalline polymer vectra/vapor grown carbon fiber nanocomposites

Estelle Kalfon-Cohen^*
, Alessandro Pegoretti
, Gad Marom

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	1033-1041
Number of pages	9
Journal	Polymer
Volume	51
Issue number	5
DOIs	https://doi.org/10.1016/j.polymer.2010.01.016
State	Published - 2 Mar 2010

Keywords

Annealing
Sequence ordering
Thermotropic liquid crystal

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10.1016/j.polymer.2010.01.016

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title = "Annealing of drawn monofilaments of liquid crystalline polymer vectra/vapor grown carbon fiber nanocomposites",

abstract = "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.",

keywords = "Annealing, Sequence ordering, Thermotropic liquid crystal",

author = "Estelle Kalfon-Cohen and Alessandro Pegoretti and Gad Marom",

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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 - https://www.scopus.com/pages/publications/76749146386

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AN - SCOPUS:76749146386

SN - 0032-3861

VL - 51

SP - 1033

EP - 1041

JO - Polymer

JF - Polymer

IS - 5

ER -

Annealing of drawn monofilaments of liquid crystalline polymer vectra/vapor grown carbon fiber nanocomposites

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Keywords

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