20.500.12556/RUL-136174 Influence of functional group concentration on hypercrosslinking of poly(vinylbenzyl chloride) PolyHIPEs upgrading macroporosity with nanoporosity With the aim to study the influence of monomer ratio in poly(high internal phase emulsions) (polyHIPEs) on the polymer network architecture and morphology of poly(vinylbenzyl chloride-codivinylbenzene-co-styrene) after hypercrosslinking via the internal Friedel–Crafts process, polyHIPEs with 80% overall porosity were prepared at three different initial crosslinking degrees, namely 2, 5, and 10 mol.%. All had typical interconnected cellular morphology, which was not affected by the hypercrosslinking process. Nitrogen adsorption and desorption experiments with BET and t-plot modelling were used for the evaluation of the newly introduced nanoporosity and in combination with elemental analysis for the evaluation of the extent of the hypercrosslinking. It was found that, for all three initial crosslinking degrees, the minimum amount of functional monomer, 4-vinylbenzyl chloride, was approximately 30 mol.%. Hypercrosslinking of polymers with lower concentrations of functional monomer did not result in induction of nanoporosity while the initial crosslinking degree had a much lower impact on the formation of nanoporosity. polyHIPE hypercrosslinking poly(4-vinylbenzyl chloride) hierarchically porous polymers nanoporosity macroporosity polimeri porozni polimeri nanopolimeri makroporoznost true false true Angleški jezik Slovenski jezik Članek v reviji 2022-04-14 12:34:54 2022-04-14 12:34:54 2022-09-15 04:13:30 0000-00-00 00:00:00 2021 0 0 10 str. iss. 16, art. 2721 Vol. 13 Aug. 2021 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 66.095.26 2073-4360 10.3390/polym13162721 73037315 polymers-13-02721.pdf polymers-13-02721.pdf 1 36AA39F7B16225186B34BF681B0EA99D 93642258c92b881a3332209b3f7090bbae10495e414e1b1822150a35125178fd c3c77769-bbde-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155677 https://www.mdpi.com/2073-4360/13/16/2721 0 8c92ac08-bbde-11ec-8aca-00155dcfd717 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=155676 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0