Friction and scratch resistance of polymer liquid crystals: Effects of magnetic field orientation

被引：21

作者：

Brostow, W ^{[1
]}

Jaklewicz, M

机构：

[1] Univ N Texas, Dept Mat Sci & Engn, Lab Adv Polymers & Optimized Mat, Coll Engn, Denton, TX 76203 USA

[2] McGill Univ, Dept Mech Engn, Montreal, PQ H3A 2K6, Canada

来源：

JOURNAL OF MATERIALS RESEARCH | 2004年 / 19卷 / 04期

关键词：

D O I：

10.1557/JMR.2004.0135

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have studied PET/0.6 PHB, an alternating copolymer in which PET is poly(ethylene terephthalate) and PHB is p-hydroxybenzoic acid with the mole fraction of 0.6 PHB. It is a longitudinal polymer liquid crystal (PLC) with the LC sequences in the main chain and oriented along the chain backbone. Material not subjected to the magnetic field, specimens oriented along and perpendicularly to the flux of the magnetic field, were investigated. Static friction, dynamic friction, scratch penetration depth, and healing of the material were determined. Static and dynamic friction parameters for oriented samples have significant higher values for oriented samples. The best scratch resistance is found for the sample aligned along the magnetic field. The results are explained in terms of morphology revealed by scanning electron microscopy and phase structures.

引用

页码：1038 / 1042

页数：5

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