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Zone‐Drawn Poly( p ‐phenylene) Films. Effects of Molecular Orientation on Electrical and Mechanical Properties
Author(s) -
Okuzaki Hidenori,
Kubota Isamu
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(200102)22:2<114::aid-marc114>3.0.co;2-8
Subject(s) - poly(p phenylene) , materials science , composite material , modulus , ultimate tensile strength , electrical resistivity and conductivity , tension (geology) , phenylene , orientation (vector space) , young's modulus , polymer chemistry , polymer , geometry , electrical engineering , mathematics , engineering
The electrochemically synthesized poly( p ‐phenylene) film could be zone drawn by a factor of 1.57, where the orientation function ( f ) increased with the draw ratio (λ), regardless of the heater temperature ( T h ) or applied tension (σ), and reached 0.428 for the resulting film. The electrical conductivity in the drawing direction rose with f but decreased as T h became higher due to dedoping that occurred simultaneously with drawing. Young's modulus and tensile strength significantly increased to 4.5 GPa and 155 MPa by zone drawing from 1.1 GPa and 79 MPa of the as‐synthesized film.