Purikova O. Highly porous foams based on the polystyrene/polycyanurate IPNs received from high internal phase emulsions (highly concentrated inverse emulsions)

The thesis is devoted to the synthesis of polymer foams named polymerized High Internal Phase Emulsions (polyHIPEs) based on polystyrene/polycyanurate (P(S-TGM)/PCN) interpenetrating polymer networks (IPNs) by using emulsion templating and to caracterisation of the influence of component ratio and the synthesis conditions on morphological and physical-chemical properties of the obtained foams. The main results of this work were received with modern research methods: IR, NMR spectroscopy, mercury intrusion porosimetry and helium pycnometry, scanning electron microscopy, differential scanning calorimetry, thermogravimetry analysis, dynamic mechanical thermal analysis. For the first time the synthesis methods of polyHIPEs based on in situ sequential and sequential P(S-TGM)/PCN IPNs were developed. Chemical interaction between vinyl and cyanate groups at synthesis of PCN/PS semi-IPNs was fixed. The finded regularities of influence of content IPNs and its method formation when polyHIPEs preparation on foams properties and structure can be used to form highly porous polyHIPEs with controlled pore structure and improved physical and chemical characteristics. The obtained polyHIPEs are attractive materials for using as heat-resistant sorbents and filters with different purposes, as well as various construction materials.