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Shear rheology and shear‐induced textures of a thermotropic copolyesteramide

 

作者: T. De’Nève,   P. Navard,   M. Kléman,  

 

期刊: Journal of Rheology  （AIP Available online 1993）
卷期: Volume 37, issue 3  

页码: 515-529

 

ISSN:0148-6055

 

年代: 1993

 

DOI:10.1122/1.550457

 

出版商: The Society of Rheology

 

关键词: Liquid crystal polymers;Polymer texture and rheology, of LCP;Rheology, liquid crystal polymers;Shear‐induced structures, in LCP;LIQUID CRYSTALS;POLYMERS;THERMOTROPIC CRYSTALS;AMIDES;POLYESTERS;TEXTURE;DEFECTS;SHEAR PROPERTIES

 

数据来源: AIP

 

摘要:

The textures and the rheological behavior of a thermotropic copolyesteramide are characterized over five decades of shear rate. Three textures are observed, one thread‐like, one worm‐like characterized by a large density of defects and third, an ordered one characterized by a high flow orientation. The transitions from one texture to another depend on both shear rate and shear strain. Each texture corresponds to a given flow mechanism, similar to the ones found for lyotropics, and in qualitative agreement with the numerical predictions obtained from the rodlike solution model of Doi.

 

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