Ee. Hamurcu et Bm. Baysal, INTERPENETRATING POLYMER NETWORKS OF POLY(DIMETHYLSILOXANE) WITH POLYSTYRENE, POLYBUTADIENE AND POLY(GLYCERYLPROPOXYTRIACRYLATE), Macromolecular chemistry and physics, 196(4), 1995, pp. 1261-1276
The synthesis of full and semi interpenetrating networks (IPNs) based
on poly(dimethylsiloxane) (PDMS)/polystyrene, PDMS/polybutadiene and P
DMS/poly(glycerylpropoxytriacrylate)(a)) is described. PDMS was used a
s host polymer in most cases. PDMS networks were prepared with two pre
polymers having different number-average molecular weights between jun
ctions, ($) over bar M(c) = 15 . 10(3) and ($) over bar M(c) = 75 . 10
(3). Physical properties of IPN samples such as stress-strain behaviou
r, swelling and glass transition temperature (T-g) were examined. IPNs
of both PDMS/polystyrene and PDMS/poly(glycerylpropoxytriacrylate) ex
hibit superior mechanical and elastomeric properties with respect to p
ure PDMS network. Most of the IPN systems studied in this work display
two T(g)s and indicate phase separation.