Effect of nanoclay on morphology and properties of macroporous styrenedivinylbenzene copolymers

Macroporous styrene-divinylbenzene (S-DVB) copolymers and corresponding clay containing nanocomposites were synthesized by suspension polymerization in presence of different binary mixtures of toluene and heptane, as diluent. SEM observations for neat copolymers prepared under whole diluent compositions show that all samples have filled porous structures. The SEM images for nanomposites prepared in the presence of pure toluene and heptane indicate prevailing filled porous structures, while, the SEM images for nanocomposite prepared in the presence of a 50/50 mixture of toluene/heptane displays hollow structure. The XRD results for nanocomposites showed both intercalated and exfoliated morphologies and TEM images approved XRD results. The compressive tests performed on porous samples revealed improvements in mechanical strength of the porous nanocomposite beads

کلیدواژه ها:

(styrene-divinylbenzene)-Nanoclay-Nanocomposite-Suspension polymerization-In situ