The influence of inert component on the morphology and porosity parameters of macroporous poly (4-vinyl pyridine-co-ethylene glycol dimethacrylate)

Abstract

In this study, the influence of the type and content of inert component in the reaction mixture on the properties of crosslinked macroporous copolymers of 4-vinyl pyridine and ethylene glycol dimethacrylate, poly (4-VP-co-EGDMA), synthesized by suspension copolymerization was studied. n-Heptane, n-octane, n-nonane, octanol and dodecanol were used the inert component. The porosity parameters of the synthesized copolymers were determined by mercury porosimetry. Morphology of copolymer particles was characterized by scanning electron microscopy. It was shown that all the synthesized poly (4-VP-co-EGDMA) samples have globular structure. Additionaly, our results showed that it was possible to influence the size of the globules, their agglomeration and spatial arrangements and also the porosity parameters of the synthesized copolymers by the changing type and ratio of the inert component in the reaction mixture.

U okviru ovoga rada prikazani su rezultati dobijeni izučavanjem uticaja vrste i udela inertne komponente u reakcionoj smeši na svojstava umreženog makro-poroznog kopolimera 4-vinilpiridina i etilenglikoldimetakrilata, poli(4-VP-co-EGDMA), sintetizovanog suspenzionom kopolimerizacijom. U svojstvu inertne komponente korišćeni su: n-heptan, n-oktan, n-nonan, oktanol i dodekanol. Parametri porozne strukture sintetizovanih kopolimera su određivani metodom živine porozimetrije, a morfologija pomoću skenirajućeg elektronskog mikroskopa. Pokazano je da svi sintetizovani uzorci poli(4-VP-co-EGDMA) imaju globularnu strukturu i da se izmenom vrste i udela inertne komponente u reakcionoj smeši može uticati na veličinu globula, njihovu aglomeraciju i raspodelu aglomerata u prostoru, a samim tim i na parametre porozne strukture sintetizovanih kopolimera.