Dynamics in Supramolecular Polymer Networks

Experiments on supramolecular networks formed with multiple types of crosslinkers show that the response to an applied stress occurs through discrete contributions of each type of cross-linker rather than being an average of the contributing species [149-151], Frequency-dependent measurements of such networks exhibit multiple plateau values in G ( u), the corresponding inverse frequencies of which can be associated with the individual time constants of dissociation of the different cross-links, as demmistrated in Fig. 8d. Because the macroscopic dynamic response is controllable at the level of molecular associations, this effect has been called the macromolecular analogue of the kinetic isotope effect [147]. [Pg.19]

The observatiOTis by Craig and coworkers have been supported by other groups who studied polymer networks based on different interactions, such as hydrogen bonding and host-guest complexation. For example, Meijer and coworkers found [Pg.19]

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