Differently-catalyzed silica-based precursors as functional additives for the epoxy-based hybrid materials

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00461315" target="_blank" >RIV/61389013:_____/16:00461315 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1016/j.polymer.2016.07.053" target="_blank" >http://dx.doi.org/10.1016/j.polymer.2016.07.053</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.polymer.2016.07.053" target="_blank" >10.1016/j.polymer.2016.07.053</a>

Result language
angličtina
Original language name
Differently-catalyzed silica-based precursors as functional additives for the epoxy-based hybrid materials
Original language description
Two types of liquid pre-condensed silica-based precursors bearing epoxy groups were synthesized using the solvent-free sol-gel process of (3-glycidyloxypropyl)trimethoxysilane (GPTMS), in the presence of either basic (DABCO) or neutral (DBTL) catalyst, and further applied for modification of epoxy (DGEBA) – amine (Jeffamine D-230) glassy network. The prepared epoxy-silica hybrid materials were characterized by a set of methods including UV–vis, SAXS, TEM, AFM, DMTA, tensile tests, TGA and XRF. All hybrids were optically transparent regardless to the silica-based precursor type and its content showing an improvement mainly in dynamic shear storage modulus in rubbery region (up to 4.3 times), energy to break (up to similar to 62%), elongation at break (up to similar to 50%) and thermooxidative stability. The developed procedure is particularly suitable for preparation of fully-transparent massive bulk materials in which the presence of water and volatiles from the sol-gel is highly undesirable.
Czech name
—
Czech description
—

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
—

Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Similar results(10)