Interpretation of the moduli of trifunctional model elastomers of polydimethylsiloxane

✍ Scribed by Queslel, J. P. ;Mark, J. E.

• Book ID: 105335516
• Publisher: Wiley (John Wiley & Sons)
• Year: 1984
• Tongue: English
• Weight: 532 KB
• Volume: 22
• Category: Article
• ISSN: 0098-1273
• DOI: 10.1002/pol.1984.180220705

✦ Synopsis

Abstract

A survey is made of published experimental values of the elongation moduli of trifunctional model networks of polydimethylsiloxane [Si(CH~3~)~2~O]. The results thus obtained are interpreted in light of recent molecular theories of rubberlike elasticity, particularly with regard to predicted values of the modulus, the degree of nonaffineness of the deformation, the relevance of the network sol fraction, and the efficiency and possible importance of the trapping of interchain entanglements. The most important result of this study is the conclusion that it is not necessary to invoke equilibrium contributions from interchain entanglements in order to interpret the experimental results presently available in the literature.