Rheology of a semi-rigid thermotropic liquid crystalline polymer

被引：5
|
作者：
Somma, E [1 ]
Nobile, MR [1 ]
机构：
[1] Univ Salerno, Dept Chem & Food Engn, I-84084 Fisciano, Sa, Italy
来源：
MACROMOLECULAR SYMPOSIA | 2005年 / 228卷
关键词：
rheology; TLCP; viscoelasticity;
D O I：
10.1002/masy.200551006
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
In this work the rheological behaviour of different M-w, samples of a thermotropic liquid crystalline polymer (TLCP), the random copolymer HBA/HNA 73/27 produced by Ticona, has been investigated. The linear viscoelastic behavior has been discussed. The G' (shear storage modulus) and G" (shear loss modulus) have been monitored as a function of frequency and of different annealing times. Rheological data obtained in steady state conditions have been used to define the viscosity flow curves for the different MW samples. In all the cases a three regions flow curve has been detected, with the plateau zone being M-w dependent.
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页码：71 / 79
页数：9
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