INTRODUCTION OF COLLOIDAL SILVER INTO POLY(2-VINYL PYRIDINE) MICRODOMAINS OF MICROPHASE SEPARATED POLY(STYRENE-B-2-VINYL PYRIDINE) FILM .2. CONCENTRATION EFFECT

Colloidal silver was introduced into the crosslinked poly(2-vinyl pyridine) (P2VP) phases of microseparated Poly(styrene-b-2-vinyl pyridine) (P(S-b-2VP)) film with lamellar morphology by soaking film in a mixture of AgAc/water/1,4-dioxane (10 and 0 vol% of 1,4-dioxane), varying the AgAc concentration (8.5 x 10(-3) to 8.5 X 10(-2) mol l-1), reducing the AgI in the film with hydroquinone and removing the unreduced AgI from the film with Na2S2O3. After soaking in Na2S2O3 solution, the colloidal products appeared in the P2VP phases and were identified as silver by beam scattering electron (BSE) observation and energy dispersive X-ray analysis. It was possible to introduce colloidal silver into the depth of the film along the P2VP phases and to increase the total amount of colloidal silver introduced by increasing the AgAc concentration of the AgAc/water/1,4-dioxane solution.