منابع مشابه
Diffusion of residual monomer in polymer resins.
A simplified mathematical model which made use of Fick's laws of diffusion written in spherical coordinates was developed to describe the rate of diffusion of residual monomers from polymer resins. The properties of the monomer-polymer system which influenced the amount of monomer remaining in the polymer as a function of time were the diffusivity and solubility of the monomer in the polymer, a...
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The mechanical properties of cytoskeletal actin bundles play an essential role in numerous physiological processes including hearing, fertilization, cell migration and growth. Cells employ a multitude of actin-binding proteins to regulate actively bundle dimensions and crosslinking properties to suit biological function. The mechanical properties of actin bundles vary by orders of magnitude dep...
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...
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The monomer-polymer equilibria for tubulin and actin were analyzed for the cytoskeleton of the squid giant axon. Two methods were evaluated for measuring the concentrations of monomer, soluble (equilibrium) polymer, and stable polymer in extruded axoplasm. One method, the Kinetic Equilibration Paradigm ( KEP ), employs the basic principles of diffusion to distinguish freely diffusible monomer f...
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Entangled networks of stiff biopolymers exhibit complex dynamic response, emerging from the topological constraints that neighboring filaments impose upon each other. We propose a class of reference models for entanglement dynamics of stiff polymers and provide a quantitative foundation of the tube concept for stiff polymers. For an infinitely thin needle exploring a planar course of point obst...
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ژورنال
عنوان ژورنال: Physical Review E
سال: 2003
ISSN: 1063-651X,1095-3787
DOI: 10.1103/physreve.67.011801