Vinyl polymers three-site model

Figure 7. Schematic representation of a three-site model for describing vinyl polymers contrasted with a one-site model for polyethylene.

The wall-PRISM theory has been extended to multiple site models [95], A simple example of a multiple-site model is a vinyl polymer (e.g., polypropylene) where there are three types of united-atom sites corresponding to CH2, CH, and CH3 groups. Ignoring end effects as before the PRISM equations take the form... 

In Section 2.0 we examine trapping experiments in the aryl vinyl polymers, for which the trap is an excimer forming site (EFS). A one dimensional random walk model is used for analysis of the transient and photostationary fluorescence in dilute solution. In a second study, the three-dimensional results of LAF [5] are applied to trapping experiments in pure solid films of aryl vinyl polymers. 

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