Interactions in a blend of two polymers greatly differing in glass transition temperature

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F11%3A00360789" target="_blank" >RIV/61389013:_____/11:00360789 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1002/polb.22272" target="_blank" >http://dx.doi.org/10.1002/polb.22272</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1002/polb.22272" target="_blank" >10.1002/polb.22272</a>

Result language
angličtina
Original language name
Interactions in a blend of two polymers greatly differing in glass transition temperature
Original language description
Blends of poly(N-methyldodecano-12-lactam) PMDL with poly(4-vinyphenol) PVPh have been studied by the DSC and ATR FTIR methods. The difference in glass transition temperature Tg between the components is 206 ?C. A single composition-dependent Tg suggestsmiscibility of the system, that is, homogeneity on the scale of about 10 nm. The Schneider's equation applied separately to low- and high-PVPh regions provides good agreement with experiment; the calculated curves cross at the point of PVPh weight fraction 0.27. In the low-PVPh region, the analysis indicates weak interactions and strong involvement of conformational entropy. In the high-PVPh region, strong specific interactions predominate and entropic effects are suppressed. According to ATR FTIR, hydrogen bonds between PVPh as proton donor and PMDL as proton acceptor induce miscibility in blends of higher PVPh content (above about 0.28 weight fraction). In low-PVPh blends, it is conformational entropy that enables intimate intermolec
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
CD - Macromolecular chemistry
OECD FORD branch
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Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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