Dynamic mechanical and dielectric properties of ORMOCER® incorporating functionalized poly(styrene) latexes

Resumen

Abstract Organically modified aluminosilicate hybrid materials incorporating polystyrene and poly(styrene‐ co ‐hydroxypropyl acrylate) latexes, (3‐glycidyloxypropyl) trimethoxysilane, and aluminum sec ‐butoxide [Al(O s Bu) 3 ] were synthesized by a sol–gel process. The bulk materials obtained were macroscopically homogeneous dispersions with good mechanical properties. Dynamic mechanical and dielectric analyses of these new hybrid materials as a function of the Al(O s Bu) 3 concentration and copolymer composition revealed a series of transitions that represented relaxation processes of the incorporated polymer (glass transition), AlOSi, the SiOSi part of the network, and segmental motion of unreacted Si(CH 2 ) 3 OCH 2 CHCH 2 O chains. © 2001 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 39: 860–867, 2001