20.500.12556/DKUM-58182 Nanocomposite foams from iron oxide stabilized dicyclopentadiene high internal phase emulsions preparation and bromination Nanocomposite polyHIPE foams with open-cellular morphology were obtained using nanoparticles ($γFe_2O_3/Fe_3O_4$), surfactant (Pluronic L121) or nanoparticle/surfactant stabilized dicyclopentadiene high internal phase emulsions (DCPD HIPEs). Upon curing, cavity sizes were found to vary drastically between 950 ± 360 µm down to 7 ±3 µm de- pending on the HIPE formulations. As-obtained nanocomposite polyHIPE foams were functionalized using elemental bromine in THF. Upon bromination the nanoparticles are moved from the cavities surfaces into the bulk phase of the polymer scaffold, which affects the inductive-heating capability of the magnetic nanocomposite foams decreasing it by the factor of 2. V tem strokovnem članku opisujem pripravo makroporoznih nanokompozitnih pen iz diciklopentadienskih HIP emulzij stabiliziranimi z $γFe_2O_3/Fe_3O_4$ nanodelci, t.i. Pickering emulzij in HIP emulzij stabiliziranimi s kombinacijo surfaktanta in nanodelcev. Tako pripravljene nanokompozitne pene smo primerjali s penami pripravljenimi iz HIP emulzij stabiliziranimi le s surfaktanti in ugotovili da se premer por spreminja in sicer od 7 ± 3 m do 950 ± 360 µm. V nadaljevanju smo nanokompozitne makroporzne pene funkcionalizirali z elementarnim bromom, ter raziskali vpliv bromiranja na samo lokacijo nanodelcev in sposobnost $γFe_2O_3/Fe_3O_4$ nanodelcev da ob prisotnosti zunanjega alternirajočega magnetnega polja proizvajajo toploto. V ta namen smo bromirano nanokompozitno peno izpostavili zunanjemu izmeničnemu magnetnem polju, ter ugotovili da se sposobnost segrevanje zmanjša za faktor 2. chemical technology nanocomposites bromination microstructure pickering HIPEs $γFe_2O_3/Fe_3O_4$ nanoparticles Ring Opening Metathesis Polymerization (ROMP) dicyclopentadiene inductive heating kemijska tehnologija nanokompoziti bromiranje mikrostruktura pickering HIP emulzij nanodelci $γFe_2O_3/Fe_3O_4$ polimerizacija ROMP diciklopentadien induktivno ogrevanje true false true Angleški jezik Slovenski jezik Znanstveno delo 2016-04-08 18:17:28 2017-08-24 11:42:17 2022-06-16 03:07:12 2019-07-11 10:31:02 2014 0 0 str. 208-214 št. 1 Letn. 61 2014 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 1318-0207 66.094.414 14086149 5522970 1318-0207 URN:SI:UM:DK:VFESET8B Acta_Chimica_Slovenica_2014_Kovacic_et_al._Nanocomposite_foams_from_iron_oxide_stabilized_dicyclopentadiene_high_internal_phase_emulsion.pdf Acta_Chimica_Slovenica_2014_Kovacic_et_al._Nanocomposite_foams_from_iron_oxide_stabilized_dicyclopentadiene_high_internal_phase_emulsion.pdf 1 19653AD605AE634EB8AF09987DF0F36E 854d9e1f6003bc79c75ec0915ad51859f7ee8a88753f9537ca4a0da5f18a4e66 8d9cba78-7c0e-11eb-bb7a-00155d0001ca https://dk.um.si/Dokument.php?lang=slv&id=115890 http://acta-arhiv.chem-soc.si/61/61-1-208.pdf 1 https://dk.um.si/Dokument.php?lang=slv&id=88265 Fakulteta za kemijo in kemijsko tehnologijo 0 0 0