Silica-polymer hybrid synthesis based

P. Hajji, L. David, J.E. Gerard, J.P. Pascault, G.J. Vigier, Journal of Polymer Science Part B Synthesis, structure, and morphology of polymer—silica hybrid nanocomposites based on hydroxyethyl methacrylate. Polymer Physics 37 (1999) 3172. 

Hajji P, David L, Gerard IF, Pascault JP, Vigier G (1999) Synthesis, structure, and morphology of polymer-silica hybrid nanocomposites based on hydroxyethyl methacrylate. J Polym Sci B Polym Phys 37(22) 3172-3187... 

The last decade has seen intensified research efforts on hybrid membranes, among which type I and type II membranes have been more specifically regarded for gas separation. Type I membranes are not directly synthesized by the sol-gel process. They consist ofmicroporous silica beads, mica, vermiculite as well as zeolite crystals added to polymer matrices in order to increase membrane permselectivity thank to the contribution of the molecular sieve material present in the polymer (Ward, 1991 Duval, 1993 Qureshi, 1999). More relevant with sol-gel synthesis are type II hybrid membranes, in particular those based on heteropolysiloxanes (HPS). 

McCarthy DW, Mark JE, Schaefer DW. Synthesis, structure, and properties of hybrid organic-inorganic composites based on polysiloxanes. 1. poly(dimethylsiloxane) elastomers containing silica. J Polym Sci Polym Phys Ed 1998 36 1167-89. 

Chapter 5 is a review of polyhedral oligomeric silsesquioxanes (POSS), hybrid POSS-organic copolymers, and POSS resin nanocomposites. Although silsesquioxanes have been known since tiie 1960s, only recently, through controlled synthesis and purification, have their structure and unique properties been determined and their useful applications been explored. This chapter is complemented by a discussion of the synthesis and properties of silica- and silsesquioxanes-containing polymer nanohybrids in Chapter 6. Chapter 7 involves a review of the preparation and characterization of siloxane-based polyviologens, polyurethanes, and divinylben-zene elastomers. 

---