DIRECT SOLID-STATE C-13 NMR EVIDENCE FOR COVALENT BOND FORMATION BETWEEN AN IMMOBILIZED VINYLSILANE LINKING AGENT AND POLYMER MATRICES

C-13 CP MAS NMR spectroscopy of polymer composites with immobilized C-13-enriched triethoxyvinylsilane provides direct evidence for incorporation of the vinylsilane into the polymers by covalent bond formation. Approximately 12% of the vinylsilane is incorporated into polystyrene and approximately 33% into poly(methyl methacrylate) (PMMA).