On the mechanics of elastomers undergoing scission and cross-linking
The thermo-mechanical response of elastomeric materials is usually represented by the constitutive theory for non-linear thermo-elasticity. Inherent in this theory is the assumption that no change in the macromolecular microstructure occurs during deformation. However, the microstructure can be changed by the scission and cross-linking of macromolecular network junctions. This paper reviews the constitutive theories for deformation and thermally induced scission and cross-linking that have been developed. It then summarizes their use in characterizing the implications of scission and cross-linking for the mechanical response of polymers, such as the alteration of mechanical properties, induced anisotropy, permanent set, residual stresses, loss of monotonicity of constitutive and structural response and evolution of boundary layers of locally high deformation.
KeywordsElastomers Scission and cross-linking Constitutive equations Permanent set Residual stresses Induced anisotropy Alan Wineman
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- 2.Tobolsky A.V., Properties and Structures of Polymers, Chapter V, 223–265. Wiley, New York (1960)Google Scholar
- 11.Wineman A.S., Jones A. and Shaw J.A., Life-Cycle and Durability Predictions of Elastomeric Components, Modeling and Simulation-Based Life Cycle Engineering, (Eds.) Chong K.P., Saigal S., Thynell S. and Morgan H.S., pp. 155–169. Spon, New York, (2002)Google Scholar
- 12.Jones A., An Experimental Study of the Thermo-Mechanical Response of Elastomers Undergoing Scission and Crosslinking at High Temperatures. PhD thesis, University of Michigan (2003)Google Scholar
- 18.Huntley H.E., Applications of a Constitutive Equation for Microstructural Change in Polymers, University of Michigan Doctoral Dissertation (1992)Google Scholar
- 37.Wineman A., Dynamic inflation of elastomeric spherical membranes undergoing time dependent Chemorheological changes in microstructure, International Journal of Engineering Science, to appearGoogle Scholar
- 39.Zhurkov S.N., Kinetic concept of strength of solids, International Journal of Fracture Mechanics, 1, 311–323 (1965)Google Scholar