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Entropic versus kinetic viewpoints in rubber elasticity

 

作者: J. H. Weiner,  

 

期刊: American Journal of Physics  （AIP Available online 1987）
卷期: Volume 55, issue 8  

页码: 746-749

 

ISSN:0002-9505

 

年代: 1987

 

DOI:10.1119/1.15034

 

出版商: American Association of Physics Teachers

 

关键词: ELASTICITY;ENTROPY;RUBBERS;THERMODYNAMICS;FORCES

 

数据来源: AIP

 

摘要:

The role of entropy change as the basic cause of the restoring force in a piece of stretched rubber has been understood for some time. The less‐utilized kinetic view, in which the restoring force is the time average of the dynamical forces due to the interaction of thermal motion and the covalent constraints, provides a clearer physical picture. The equivalence of the two viewpoints is demonstrated.

 

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