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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F11%3A00360789%21RIV12-AV0-61389013
rdf:type
skos:Concept n7:Vysledek
dcterms: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.
dcterms: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
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
skos:notation
RIV/61389013:_____/11:00360789!RIV12-AV0-61389013
n7:predkladatel
n8:ico%3A61389013
n4:aktivita
n15:Z
n4:aktivity
Z(AV0Z40500505)
n4:cisloPeriodika
14
n4:dodaniDat
n19:2012
n4:domaciTvurceVysledku
n5:9400540 n5:5033470 n5:1518755 n5:1926284
n4:druhVysledku
n12:J
n4:duvernostUdaju
n17:S
n4:entitaPredkladatele
n9:predkladatel
n4:idSjednocenehoVysledku
205256
n4:idVysledku
RIV/61389013:_____/11:00360789
n4:jazykVysledku
n6:eng
n4:klicovaSlova
differential scanning calorimetry (DSC); fouriertransform infrared spectroscopy (FT-IR); glass transition temperature
n4:klicoveSlovo
n13:fouriertransform%20infrared%20spectroscopy%20%28FT-IR%29 n13:differential%20scanning%20calorimetry%20%28DSC%29 n13:glass%20transition%20temperature
n4:kodStatuVydavatele
US - Spojené státy americké
n4:kontrolniKodProRIV
[EEF152107B29]
n4:nazevZdroje
Journal of Polymer Science. Polymer Physics Edition
n4:obor
n18:CD
n4:pocetDomacichTvurcuVysledku
4
n4:pocetTvurcuVysledku
4
n4:rokUplatneniVysledku
n19:2011
n4:svazekPeriodika
49
n4:tvurceVysledku
Kratochvíl, Jaroslav Šturcová, Adriana Sikora, Antonín Dybal, Jiří
n4:wos
000291613500005
n4:zamer
n14:AV0Z40500505
s:issn
0887-6266
s:numberOfPages
10
n16:doi
10.1002/polb.22272