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Structures and tensile properties of a magnetically and mechanically oriented liquid crystalline copolyester, Xydar.
From:
Polymer Engineering and Science
| Date:
February 1, 1997| Author:
| COPYRIGHT 1997 Society of Plastics Engineers, Inc. This material is published under license from the publisher through the Gale Group, Farmington Hills, Michigan. All inquiries regarding rights should be directed to the Gale Group.Copyright information
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A wholly aromatic thermotropic liquid crystalline copolyester consisting of p-hydroxybenzoic acid, terephthalic acid, and p,p[prime]-biphenol, one from the Xydar series, was aligned by means of magnetic fields and mechanical methods. The tensile properties of these samples were different depending on the orientation degree and the means used for the orientation. Magnetically oriented films exhibited lower elastic modulus and ultimate tensile strength than mechanically oriented films of the same orientation degree, but the elastic modulus of magnetically oriented films was comparable to that ...
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