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Naslov:Aryl acrylate based high-internal-phase emulsions as precursors for reactive monolithic polymer supports
Avtorji:ID Krajnc, Peter (Avtor)
ID Štefanec, Dejan (Avtor)
ID Brown, Jane F. (Avtor)
ID Cameron, Neil R. (Avtor)
Datoteke:URL http://dx.doi.org/10.1002/pola.20501
 
Jezik:Angleški jezik
Vrsta gradiva:Neznano
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:FKKT - Fakulteta za kemijo in kemijsko tehnologijo
Opis:Water-in-oil high-internal-phase emulsions (HIPEs), containing 4-nitrophenyl acrylate and 2,4,6-trichlorophenyl acrylate as reactive monomers, were prepared and polymerized, and highly porous monolithic materials resulted. The novel materials were studied by combustion analysis, Fourier transform infrared spectroscopy scanning electron microscopy, mercury porosimetry, and N2 adsorption/desorption analysis. With both esters, cellular macroporous monolithic polymers were obtained: the use of 4-nitrophenyl acrylate resulted in a cellular material with void diameters between 3 and 7 m and approximately3-m interconnects, whereas the use of 2,4,6-trichlorophenyl acrylate yielded a foam with void diameters between 2 and 5 m, most interconnects being around 1 m. The resulting monoliths proved to be very reactive toward nucleophiles, and possibilities of functionalizing the novel polymer supports were demonstrated via reactions with amines bearing additional functional groups and via the synthesis of an acid chloride derivative. Tris(hydroxymethyl)aminomethane and tris(2-aminoethyl)amine derivatives were obtained. The hydrolysis of 4-nitrophenylacrylate removed thenitrophenyl group, yielding a monolithic acrylic acid polymer. Furthermore,functionalization to immobilized acid chloride was performed very efficiently, with more than 95% of the acid groups reacting. The measurement of the nitrogen content in 4-nitrophenyl acrylate poly(HIPE)s after various times of hydrolysis showed the influence of the total pore volume of the monolithic polymers on the velocity of the reaction, which was faster with themore porous polymer.
Ključne besede:organic chemistry, macroporous polymers, monolithic polymer supports, emulsion polymerisation, foams, functionalization of polymers, high-internal-phase emulsions
Leto izida:2005
PID:20.500.12556/DKUM-27217 Novo okno
UDK:547:678
COBISS.SI-ID:9243414 Novo okno
ISSN pri članku:0887-624X
NUK URN:URN:SI:UM:DK:BBIZM2FN
Datum objave v DKUM:01.06.2012
Število ogledov:2208
Število prenosov:96
Metapodatki:XML RDF-CHPDL DC-XML DC-RDF
Področja:Ostalo
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Gradivo je del revije

Naslov:Journal of polymer science
Skrajšan naslov:J. polym. sci., Part A, Polym. chem.
Založnik:Wiley
ISSN:0887-624X
COBISS.SI-ID:6558727 Novo okno

Sekundarni jezik

Jezik:Angleški jezik
Ključne besede:organska kemija, makroporozni polimeri, monolitni polimerni nosilci, emulzijska polimerizacija, pene, funkcionalizacija polimerov


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