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The rheology of highly concentrated PBLG solutions

 

作者: Lynn M. Walker,   Norman J. Wagner,   Ron G. Larson,   Peter A. Mirau,   Paula Moldenaers,  

 

期刊: Journal of Rheology  （AIP Available online 1995）
卷期: Volume 39, issue 5  

页码: 925-952

 

ISSN:0148-6055

 

年代: 1995

 

DOI:10.1122/1.550624

 

出版商: The Society of Rheology

 

关键词: CONCENTRATION RATIO;LIQUID CRYSTALS;MICROSTRUCTURE;RHEOLOGY;SHEAR PROPERTIES;SOLUTIONS;STRESS RELAXATION;TRANSIENTS

 

数据来源: AIP

 

摘要:

We have characterized the rheology of two concentrated, liquid crystalline solutions of poly(γ benzyl–L–glutamate) of molecular weight 238 000 inm–cresol. Comparing these results to previous work on less concentrated, liquid crystalline solutions separates the effects of concentration from the direct influence of defect texture on liquid crystal polymer rheology. This work also defines the limitations of current polydomain models and suggests improvements. The solution atC=37wt% PBLG behaves similarly to moderately concentrated nematic solutions (12wt%

 

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