THE MARK-HOUWINK-KUHN-SAKURADA EXPONENT OF POLYMERS WITH LONG SIDE-GROUPS - IS A(0)=1 2 A RELIABLE CRITERION OF THE THETA-STATE/

Authors
BOHDANECKY M NETOPILIK M
Citation
M. Bohdanecky et M. Netopilik, THE MARK-HOUWINK-KUHN-SAKURADA EXPONENT OF POLYMERS WITH LONG SIDE-GROUPS - IS A(0)=1 2 A RELIABLE CRITERION OF THE THETA-STATE/, Polymer, 36(17), 1995, pp. 3377-3384
Citations number
37
Categorie Soggetti
Polymer Sciences
Journal title
Polymer → ACNP
ISSN journal
00323861
Volume
36
Issue
17
Year of publication
1995
Pages
3377 - 3384
Database
ISI
SICI code
0032-3861(1995)36:17<3377:TMEOPW>2.0.ZU;2-V
Abstract
The intrinsic viscosity data for poly(decyl acrylate), poly(cetyl acry late), poly(vinyl laurate), poly(vinyl stearate) and two polymethacryl ates with long mesogenic side groups are reviewed and analysed by mean s of three sensitive plots. Unusual values of the Mark-Houwink-Kuhn-Sa kurada exponent a(0) under theta conditions or in good solvents (A(2) not equal 0 but a(0) = 1/2) are assigned to a combination of the effec ts of long-chain branching, chain thickness and, in the last case, exc luded volume.