Ring opening metathesis polymerisation (ROMP) as a tool for polyhipes with extraordinary mechanical properties

Povzetek

PolyHIPE materials have been prepared by Ring Opening Metathesis Polymerisation (ROMP) of dicyclopentadiene. Two characteristic features for successful stabilization of high internal phase emulsions (HIPEs) were tuned in order to achieve improvements regarding mechanical properties of polyHIPEs.Mechanical properties of the new materials were related to variations of the surfactant concentration and the volume ratio of the internal phase in HIPEs. Values for Youngʼs moduli were about a hundred times higher than in standard polyHIPE materials with the same level of porosity, which represents a major improvement for highly porous cellular polymeric materials. Moreover, fully interconnected macroporous morphology was found forpolyHIPEs, where respective HIPEs were stabilized with only 0.25 v% of surfactant.

Ključne besede

emulsion templating;ring opening metathesis polymerization;dicyclopentadiene;ROMP;mechanical characteristics;polyHIPEs;

Podatki

Jezik:	Angleški jezik
Leto izida:	2013
Tipologija:	1.04 - Strokovni članek
Organizacija:	UM FKKT - Fakulteta za kemijo in kemijsko tehnologijo
UDK:	661.715.5
COBISS:	17050902
ISSN:	1318-0207
Št. ogledov:	1326
Št. prenosov:	74
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarni povzetek:	Za pripravo poliHIPE materialov smo uporabili polimerizacijo pri kateri smo polimerizirali ciklične monomerje (diciklopentadien) z metodo odpiranjem obroča (ROMP). PoliHIPE materiali polimerizirani s ROMP mehanizmom so se iz- kazali z izjemnimi mehanskimi lastnostmi, saj so meritve mehanske jakosti pokazale sto krat višje vrednosti v primerjavi s poliHIPE materiali polimeriziranimi z navadno radikalsko polimerizacijo. ROMP v kombinaciji s HIPE templatiranjem se je izkazal kot izredno dobra kombinacija za proizvodnjo visoko poroznih polimernih materialov z izjemnimi mehanskimi lastnostmi.
Sekundarne ključne besede:	polimerizacija;diciklopentadien;mehanske lastnosti;poliHIPEs;
URN:	URN:NBN:SI
Vrsta dela (COBISS):	Znanstveno delo
Strani:	str. 448-454
Letnik:	ǂVol. ǂ60
Zvezek:	ǂno. ǂ2
Čas izdaje:	2013
ID:	9095369