Abstract
This article presents uniaxial extension measurements on cis-1,4- polybutadiene networks of known junction functionality. The observed values of the reduced force from uniaxial extension measurements conform to the constrained junction theory of Flory. The reduced force intercept at 1/α = 0 is fully comprehensible in terms of the cycle rank of the network, and can be calculated from chemical considerations. This holds even though the polybutadiene melt has a high plateau modulus. Therefore, discrete topological entanglements do not contribute perceptibly to the equilibrium modulus of polybutadiene networks.
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Brotzman, R.W. (1986). The Elastic Behavior of CIS-1,4-Polybutadiene. In: Lal, J., Mark, J.E. (eds) Advances in Elastomers and Rubber Elasticity. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-1436-4_23
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DOI: https://doi.org/10.1007/978-1-4757-1436-4_23
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