Journal article
Mean Span Dimensions of Ideal Polymer Chains Containing Branches and Rings
Danish Polymer Center, Department of Chemical and Biochemical Engineering, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark1
Department of Chemical and Biological Sciences, Polytechnic Institute of New York University, 333 Jay Street, Brooklyn, New York 11201, United States2
Department of Chemistry, Technical University of Denmark, DK-2800 Kgs. Lyngby, Denmark3
MEMPHYS-Center for Biomembrane Physics, DK-2800 Kgs. Lyngby, Denmark4
We present a general method for calculating the mean span dimension of various branched and ringed polymers under the assumption of Gaussian chain statistics. The method allows a routine construction of an integral expression of the mean span dimension based on three base functions, determined for a connector, an arm and a loop, respectively.
Applications of our method are shown to a variety of polymer architectures including star, two-branch-point, comb and various cyclic chains (eight-shaped, Θ-shaped and several semicyclic chains). Comparing the mean span dimension with other commonly used molecular size parametersthe radius of gyration and the hydrodynamic radius, it is found that both the mean span dimension and the hydrodynamic radius shrink less than does the radius of gyration when comparing averaged sizes of a branched chain with its linear analogue.
Finally, possible use of the mean span dimension in size exclusion chromatography (SEC) experiments is discussed.
| Language: | English |
|---|---|
| Publisher: | American Chemical Society |
| Year: | 2011 |
| Pages: | 403-412 |
| ISSN: | 15205835 and 00249297 |
| Types: | Journal article |
| DOI: | 10.1021/ma102308q |
