منابع مشابه
Thermal fluctuations and rubber elasticity.
The effects of thermal elastic fluctuations in rubbery materials are examined. It is shown that, due to their interplay with the incompressibility constraint, these fluctuations qualitatively modify the large-deformation stress-strain relation, compared to that of classical rubber elasticity. To leading order, this mechanism provides a simple and generic explanation for the peak structure of Mo...
متن کامل~ 1 Rubber Elasticity : BasicConcepts and Behavior
The single most important property of elastomers—that from which their name derives—is their ability to undergo large elastic deformations, that is, to stretch and return to their original shape in a reversible way. Theories to account for this characteristic high elasticity have passed through three distinct phases: the early development of a molecular model relating experimental observations ...
متن کاملNonaffine rubber elasticity for stiff polymer networks.
We present a theory for the elasticity of cross-linked stiff polymer networks. Stiff polymers, unlike their flexible counterparts, are highly anisotropic elastic objects. Similar to mechanical beams, stiff polymers easily deform in bending, while they are much stiffer with respect to tensile forces ("stretching"). Unlike in previous approaches, where network elasticity is derived from the stret...
متن کاملElasticity of rubber-like materials measured by AFM nanoindentation
1Laboratory of Integrative and Medical Biophysics, National Institutes of Health, 9 Memorial Drive, Bldg. 9 Rm. 1E118, Bethesda, MD 20892, USA 2National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, 13 South Drive, Bldg. 13 Rm. 3N17, Bethesda, MD 20892, USA 3Laboratory of Integrative and Medical Biophysics, National Institutes of Health, 13 South Drive, Bldg...
متن کاملFrom Vulcanization to Isotropic and Nematic Rubber Elasticity
– A Landau theory is constructed for the vulcanization transition in cross-linked polymer systems with spontaneous nematic ordering. The neo-classical theory of the elasticity of nematic elastomers is derived via the minimization of this Landau free energy; this neoclassical theory contains the classical theory of rubber elasticity as its isotropic limit. Our work not only reveals the statistic...
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ژورنال
عنوان ژورنال: Journal of Chemical Education
سال: 1981
ISSN: 0021-9584,1938-1328
DOI: 10.1021/ed058p898