Record Details

Self-Diffusion Coefficient of Ring Polymers in Semidilute Solution

DSpace at IIT Bombay

View Archive Info
 
 
Field Value
 
Title Self-Diffusion Coefficient of Ring Polymers in Semidilute Solution
 
Creator IYER, BVS
SHANBHAG, S
JUVEKAR, VA
LELE, AK
 
Subject spin-spin relaxation
polydimethylsiloxane melts
viscoelastic properties
dynamics
polystyrenes
chain
molecules
length
bulk
dna
diffusion
macrocycles
monte carlo simulation
 
Description In a topologically constraining environment the size of a flexible nonconcatenated ring polymer (macrocycles) and its dynamics are known to differ from that of linear polymers. Hence, the diffusion coefficient of ring polymers can be expected to be different from linear chains. We present here scaling arguments for the concentration and molecular weight dependence of self-diffusion coefficient of ring polymers in semidilute solutions, and show that contrary to expectations these scaling relations are identical to what is known for linear polymers. At higher concentrations excluded volume interactions arising from possibilities of segmental overlap can become effective for large ring polymers. In this regime the diffusion coefficient of large ring polymers shows a relatively weaker dependence on concentration and molecular weight. (C) 2008 . J Polym Sci Part B: Polym Phys 46: 2370-2379, 2008
 
Publisher JOHN WILEY & SONS INC
 
Date 2011-08-16T13:47:26Z
2011-12-26T12:54:58Z
2011-12-27T05:43:25Z
2011-08-16T13:47:26Z
2011-12-26T12:54:58Z
2011-12-27T05:43:25Z
2008
 
Type Article
 
Identifier JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 46(21), 2370-2379
0887-6266
http://dx.doi.org/10.1002/polb.21569
http://dspace.library.iitb.ac.in/xmlui/handle/10054/9516
http://hdl.handle.net/10054/9516
 
Language en