Title

Complexation Thermodynamics of Free and Graft Oligomers with Complementary Polymers

Document Type

Article

Peer Reviewed

1

Publication Date

2-1-1991

Journal/Book/Conference Title

Journal of Polymer Science Part B-Polymer Physics

Abstract

The dilute solution complexation equilibrium between linear macromolecules and smaller complementary oligomers is considered when: (1) the oligomers are free in solution; and (2) the oligomers are covalently attached at one end to the polymer. A general statistical mechanical framework is developed and is illustrated using a simple random walk model for polymer conformation. The statistical mechanical partition functions are formulated using a generating function technique, allowing thermodynamic averages in the complexed state to be calculated. Loops, trains, and tails of all possible lengths are allowed in the conformation of a complexed oligomer. Simulation results for the free oligomer case are compared with those obtained for oligomers covalently attached to the polymeric molecular. The model provides a theoretical explanation for the experimentally observed enhancement of complexation of oligomers grafted to the complementary polymers.

Keywords

Sustainability

Published Article/Book Citation

Journal of Polymer Science Part B-Polymer Physics, 29:2 (1991) pp.211-224.

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URL

https://ir.uiowa.edu/cbe_pubs/22