About geopolymerization of inorganic polysialates you may check section 7-8 at: J. Šesták, C.A. Queiroz, B. Foller, Ch. 3 in: D. Křemenáková, R. Mishra, J. Militký, J. Šesták (Eds.), "Selected topics of textile and material science", Publishing House of West Bohemian University, Pilsen, 2011, pp. 53-75.
Chapter Some aspects of vitrification, amorphisation and idiosyncrat...