Preparation of AgCl-PEO/PVA Composite via Combination of a Polymer Microgel Template and a Reverse Micelle Technique

A new route was created for the preparation of AgCl-PEO/PVA nano composite with patterned surface structures. The route is a combination of a polymer microgel template method and a reverse micelle technique. Scanning electron microscopy shows that the size of the AgCl nano particles existing on the surfaces of the composite microspheres and the clearness of the surface patterns of the composite can be altered by simply adjusting the amount of precipitated AgCl and the rate of the reaction. X-ray diffraction shows two sharp characteristic bands at 2 theta = 18 and 23 theta related to the presence of PEO and additional bands at 2 theta = 27, 32, 39 and 46 attributed to 111, 200 and 111 and 200 planes of silver chloride. It is observed that upon increasing filler content, FTIR spectrum shows obvious changes in intensity and position of some bands. These results manifested the conclusion about the specific interaction in polymer matrices and hence the occurrence of complexation. UV-Vis. data indicate the presence of a well defined pi-pi* transition associated with the formation of conjugated electronic structure and the decrease in the optical energy gap was correlated to increase of the degree of disorder and overlap in the localized states.