Premium
Orientational order of a nematic polymer grafted on polytetrafluoroethylene
Author(s) -
Vasilets Victor N.,
Kovalchuk Anatolii V.,
Yuranova Tat'yana I.,
Ponomarev Ardalion N.,
Talroze Raisa V.,
Plate Nicolai A.
Publication year - 2000
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/1099-1581(200007)11:7<330::aid-pat38>3.0.co;2-x
Subject(s) - materials science , polytetrafluoroethylene , liquid crystal , composite number , polymer , composite material , polymerization , polymer chemistry , acrylate polymer , side chain , acrylate , monomer , optoelectronics
The orientation behavior of a nematic side‐chain polymer grafted on polytetrafluoroethylene (PTFE) is studied. The sandwich‐like composite was prepared by the graft post‐polymerization of 4‐cyan‐4′‐(biphenyloxy)butyl acrylate on a PTFE film pretreated by vacuum ultraviolet irradiation (VUV). The oriented liquid crystal layer was prepared by mechanical stretching of the composite film. Orientation degree was measured by means of FT‐IR spectroscopy. The orientation function increases with the increasing strain and attains the upper limit value at the strain Δ l / l > 1.0. The temperature dependence of the orientation degree is completely reversible under cooling and heating. Copyright © 2000 John Wiley & Sons, Ltd.