Thermodynamic analysis of the inequality of the cohesive energy density and internal pressure of polymers | Zendy

Rane Sagar S. | Zendy; Choi Phillip | Zendy

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Thermodynamic analysis of the inequality of the cohesive energy density and internal pressure of polymers

Author(s) -

Rane Sagar S.,

Choi Phillip

Publication year - 2005

Publication title -

polymer engineering and science

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.503

H-Index - 111

eISSN - 1548-2634

pISSN - 0032-3888

DOI - 10.1002/pen.20339

Subject(s) - internal energy , cohesion (chemistry) , internal pressure , thermodynamics , materials science , polymer , energy density , statistical physics , theoretical physics , chemistry , physics , composite material , organic chemistry

With a simple thermodynamic analysis, we show that polymers do not satisfy the two major criteria that are required for establishing a unique relationship between cohesion energy density (CED) and internal pressure (IP). Since IP can take values independently of CED, we contend that the IP/CED ratio cannot be established a priori, as the ratio depends on the thermodynamic variables (temperature, pressure, etc.) and the system of interest. POLYM. ENG. SCI. 45:798–800, 2005. © 2005 Society of Plastics Engineers

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