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

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
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 ºC. A single composition-dependent Tg suggests miscibility 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 intermolecular mixing. 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 ºC. A single composition-dependent Tg suggests miscibility 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 intermolecular mixing. (en)
Title	Interactions in a blend of two polymers greatly differing in glass transition temperature Interactions in a blend of two polymers greatly differing in glass transition temperature (en)
skos:prefLabel	Interactions in a blend of two polymers greatly differing in glass transition temperature Interactions in a blend of two polymers greatly differing in glass transition temperature (en)
skos:notation	RIV/61389013:_____/11:00360789!RIV12-AV0-61389013
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(AV0Z40500505)
http://linked.open...iv/cisloPeriodika	14
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Dybal, Jiří Sikora, Antonín Šturcová, Adriana Kratochvíl, Jaroslav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav makromolekulární chemie AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	205256
http://linked.open...ai/riv/idVysledku	RIV/61389013:_____/11:00360789
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	differential scanning calorimetry (DSC); fouriertransform infrared spectroscopy (FT-IR); glass transition temperature (en)
http://linked.open.../riv/klicoveSlovo	differential scanning calorimetry (DSC) fouriertransform infrared spectroscopy (FT-IR) glass transition temperature
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[EEF152107B29]
http://linked.open...i/riv/nazevZdroje	Journal of Polymer Science. Polymer Physics Edition
http://linked.open...in/vavai/riv/obor	CD
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	49
http://linked.open...iv/tvurceVysledku	Dybal, Jiří Sikora, Antonín Kratochvíl, Jaroslav Šturcová, Adriana
http://linked.open...ain/vavai/riv/wos	000291613500005
http://linked.open...n/vavai/riv/zamer	Progresivní makromolekulární materiály a supramolekulární systémy: syntéza a studium vlastností, jevů a možností využití pro speciální aplikace a moderní technologie
issn	0887-6266
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1002/polb.22272

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