Naslov
Influence of Conditions of Hydrolysis on Cure Kinetics of Hybrid Materials

Autori
Paljar, Klaudia ; Čakarić, Dijana ; Macan, Jelena

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Book of Abstracts / Rogošić, Marko ; Macan, Jelena - Zagreb : Fakultet kemijskog inženjerstva i tehnologije Sveučilišta u Zagrebu, 2012

ISBN
978-953-6470-57-0

Skup
POLYCHAR 20 World Forum on Advanced Materials

Mjesto i datum
Dubrovnik, Hrvatska, 26.03.2012. - 30.03.2012

Vrsta sudjelovanja
Poster

Vrsta recenzije
Nije recenziran

Ključne riječi
hydrolysis; glymo; organic-inorganic hybrid materials

Sažetak
Influence of hydrolysis conditions on the reaction of 3-glycidyloxypropyltrimethoxysilane (GLYMO) with a crosslinking agent poly(oxypropylene) diamine (Jeffamine D230) was studied by differential scanning calorimetry (DSC). The investigated systems were analyzed by dynamic and isothermal DSC in order to determine the total heat of reaction and activation energy. Kissinger and Friedman methods were used for determining the activation energy. The experimental results indicate the complexity of crosslinking reactions. Crosslinking of hydrolysed systems is probably catalyzed by the presence of silanol groups from the very beginning. For the nonhydrolysed system the uncatalysed reaction is probably combined with the catalytic influence of some silanol groups formed by a reaction with ambient moisture. Additional reactions may influence the studied systems (possible hydrolysis of epoxy group of GLYMO or formation of ammonium ions). Further research is necessary in order to derive solid conclusions about the influence of hydrolysis on the crosslinking reaction of GLYMO.

Izvorni jezik
Engleski

Znanstvena područja
Temeljne tehničke znanosti

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