Abstract
Entanglement effects in polymer melts are investigated using mode coupling theory. For a system of long thin rods that perform only translation motion, we find an exact solution to the mode coupling theory, and demonstrate that it predicts that the self-diffusion coefficient becomes isotropic as the aspect ratio becomes infinite, i.e., it does not describe entanglement effects. One has to go beyond the usual Gaussian approximation in mode coupling theory to obtain nontrivial results for the self-diffusion coefficient, and a simple approximation is investigated which gives results consistent with the reptation theory and a dynamical mean field theory.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
