Elasticity of entangled polymer loops: Olympic gels
نویسندگان
چکیده
منابع مشابه
Counting primary loops in polymer gels.
Much of our fundamental knowledge related to polymer networks is built on an assumption of ideal end-linked network structure. Real networks invariably possess topological imperfections that negatively affect mechanical properties; modifications of classical network theories have been developed to account for these defects. Despite decades of effort, there are no known experimental protocols fo...
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In polymeric gels, basically two species of cross-links exist: those contributing to the network and those that don’t. Zhou et al. (1) suggested network disassembly spectrometry to determine the content of loops— the simplest kind of network defects in gels. Although cross-links contributing to the network hold the gel together and are thus desirable, the noncontributing links (e.g., the loops ...
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The classical theory of rubber elasticity t contains an unrealistic assumption. It assumes that the polymer chains move through each other as 'phantoms' held only by crosslinks, and that the whole system is prevented from collapsing by the assumption of repulsive forces which generate a bulk modulus but are otherwise ignored. The neglect of repulsive effects in calculating the shear elasticity ...
متن کاملEntangled polymer systems
Topological constraints, referred to as entanglements in the literature, dominate the viscoelastic behavior of high molecular weight polymeric liquids. To give a microscopic foundation of the phenomenological tube models which successfully describe this behavior, we have recently introduced a method for identifying the so-called primitive path mesh that characterizes the microscopic topological...
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We present a Landau-type theory for the nonlinear elasticity of biopolymer gels with a part of the order parameter describing induced nematic order of fibers in the gel. We attribute the nonlinear elastic behavior of these materials to fiber alignment induced by strain. We suggest an application to contact guidance of cell motility in tissue. We compare our theory to simulation of a disordered ...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 1997
ISSN: 1063-651X,1095-3787
DOI: 10.1103/physreve.56.r1314