Diluent Induced Cyclization and Phase Separation in Polymer Networks

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10104627" target="_blank" >RIV/00216208:11320/11:10104627 - isvavai.cz</a>
Alternative codes found
RIV/61389013:_____/11:00366161
Result on the web
<a href="http://onlinelibrary.wiley.com/doi/10.1002/masy.201000133/full" target="_blank" >http://onlinelibrary.wiley.com/doi/10.1002/masy.201000133/full</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/masy.201000133" target="_blank" >10.1002/masy.201000133</a>

Result language
angličtina
Original language name
Diluent Induced Cyclization and Phase Separation in Polymer Networks
Original language description
The effect of the presence of diluent during network formation on the gelpoint conversion and on the equilibrium elastic modulus was studied using polyurethane networks from star-shaped polyols and a star-shaped triisocyanate. The decrease of the equilibrium modulus and the concentration of elastically active network chains in dependence on the volume fraction of polymerizable compounds (solids) was curved downwards and extrapolated to the limiting dilution of the system at which no gel was formed whenthe conversion of functional groups was 100%. Some samples exhibited phase separation in the form of macrosyneresis. The continuous change of gel volume as a result of phase separation was obtained by solving an integral equation respecting the thermodynamic stability of the system. The change of the concentration of EANCs obtained from equilibrium modulus was translated into the intermolecular conversion calculated using the branching theory. The intermolecular conversion depended linea
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
<a href="/en/project/GA106%2F08%2F1409" target="_blank" >GA106/08/1409: Role of structure of crosslinked polymer matrix in particulate composites. Multiscale modeling and experimental verification.</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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