Sol Gel Process Step after Protein Dye plus Gelatin Preparation

Discussion in 'Silver Gelatin Based Emulsion Making & Coating' started by Mustafa Umut Sarac, Oct 5, 2013.

  1. Mustafa Umut Sarac

    Mustafa Umut Sarac Subscriber

    Oct 29, 2006
    35mm RF
    Why sol gel process is necessary After mixing protein dye with gelatin ?

    2.2.2. Preparation of sol-gel matrix
    Tetraethoxysilane (TEOS) were used as precursors for the sol-gel glass. TEOS (7 ml), 3.0
    ml of distilled water and 0.1 ml of 0.04 M HC1 were mixed together and sonicated for 20
    min. The resulting product was diluted with an equal volume of distilled water. The resulting
    mixture (0.5 ml) was mixed with 0.25 ml sodium borate buffer solution (pH 9) and (0.1 ml,
    0.2 ml) bR solution to create a film-forming solution. Triethanolamine (TEA) was chosen as
    sensitizing additives. The concentration of chemical additives was in the range of 0.01–0.4
    M. For the preparation of chemically modified films, bR solution was mixed with TEA,
    before mixing with the sol mixture, and afterwards 0.02 ml of the bR-chemical additives
    mixture was added to 0.12 ml of the sol mixture [7,8].​