RT Journal Article
T1 Intramolecular distances and form factor of cyclic chains with excluded volume interactions
A1 Álvarez Galindo, Gabriel
A1 Rubio Caparrós, Ana María
A1 Freire, Juan J.
AB Numerical simulations are performed for isolated cyclic, or ring, chains with excluded volume. Data are reported for the form factor, S(x), where x is the reduced scattering variable, and also for averages and distributions of the distance between intramolecular units. The averages of distances are compared with two alternative expressions describing their dependence with the number of segments separating the units. The distribution function results are compared with the des Cloizeaux form. Finally the S(x) data are compared with theoretical functions also derived from the des Cloizeaux expression for the distribution function. Moreover, the low x and asymptotic expansions of these functions are obtained. Based on these expansions, simple formulas are proposed to give a good description of the simulation data in the whole range of values of x. A comparison with similar results for linear chains is also included. (c) 2007 Elsevier Ltd. All rights reserved.
PB LTD Elsevier Sci Ltd
SN 0032-3861
YR 2008
FD 2008-01-21
LK https://hdl.handle.net/20.500.14352/50543
UL https://hdl.handle.net/20.500.14352/50543
LA eng
NO This work has been partially supported by GrantsCTQ2006-06446 and FIS2005-00752 from DGI-MEC, Spain.
NO DGI-MEC, Spain
DS Docta Complutense
RD 13 may 2025