Τίτλος:
Conformation of A2B and A3B miktoarm star copolymers in dilute solutions
Γλώσσες Τεκμηρίου:
Αγγλικά
Περίληψη:
The dimensionless ratio σG, expressing quantitatively the effects of heterointeractions between unlike units on the conformational properties of copolymers, has been determined experimentally by intrinsic viscosity analysis for the A2B and A3B miktoarm stars in various solvent conditions. In the case of symmetric samples (where the lengths of A and B arms are the same) in a common good solvent, the values of the required Flory parameter Φ for homopolymer stars with three and four arms were used. For the other cases and solvent conditions, Φ was determined by extended Monte Carlo calculations which provide a lower bound of this quantity. The experimental values of σG are compared with the results obtained by Monte Carlo simulations and recent renormalization group predictions.
Συγγραφείς:
Vlahos, C.
Tselikas, Y.
Hadjichristidis, N.
Roovers, J.
Rey, A.
Freire, J.
Περιοδικό:
Macromolecules
Εκδότης:
American Chemical Society
Λέξεις-κλειδιά:
Calculations; Computer simulation; Conformations; Monte Carlo methods; Solvents; Synthesis (chemical); Viscosity, Dilute solutions; Flory parameter; Homopolymer; Intrinsic viscosity analysis; Star copolymers, Copolymers
