Abstract
Association behavior of water miscible butyl poly (oxypropylene) ether derivatives having polar dissociative functional groups on their terminal hydroxyl groups were investigated with their intermolecular interactions with water. Measurements of spin-lattice relaxation times by 1H NMR and rotational correlation times of a spin probe by ESR in polymer/water system indicated that they behave in a manner similar to that of a reversed micelle or W/O microemulsion systems and are inverted to an O/W type through a transparent and viscoelastic gel stage. This finding was also supported by observations of their appearance and rheological properties.
