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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F11%3A00360533%21RIV12-AV0-61389013
rdf:type
n18:Vysledek skos:Concept
dcterms:description
Temperature-induced and solvent composition-induced phase separation in solutions of poly(N-isopropylmethacrylamide) (PIPMAm) and other thermoresponsive polymers as studied by NMR and infrared (IR) spectroscopy is discussed. The fraction p of phase-separated units (units with significantly reduced mobility) and subsequently, e.g., thermodynamic parameters characterizing the coil-globule phase transition induced by temperature, were determined from reduced integrated intensities in high-resolution 1H NMR spectra. This approach can be especially useful in investigations of phase separation in solutions of binary polymer systems. Information on behaviour of water during temperature-induced phase transition was obtained from measurements of 1H NMR relaxation times of HDO molecules. NMR and IR spectroscopy were used to investigate PIPMAm solutions in water/ethanol (D2O/EtOH) mixtures where the phase separation can be induced by solvent composition (cononsolvency). Temperature-induced and solvent composition-induced phase separation in solutions of poly(N-isopropylmethacrylamide) (PIPMAm) and other thermoresponsive polymers as studied by NMR and infrared (IR) spectroscopy is discussed. The fraction p of phase-separated units (units with significantly reduced mobility) and subsequently, e.g., thermodynamic parameters characterizing the coil-globule phase transition induced by temperature, were determined from reduced integrated intensities in high-resolution 1H NMR spectra. This approach can be especially useful in investigations of phase separation in solutions of binary polymer systems. Information on behaviour of water during temperature-induced phase transition was obtained from measurements of 1H NMR relaxation times of HDO molecules. NMR and IR spectroscopy were used to investigate PIPMAm solutions in water/ethanol (D2O/EtOH) mixtures where the phase separation can be induced by solvent composition (cononsolvency).
dcterms:title
Stimuli-responsive polymers in solution investigated by NMR and infrared spectroscopy Stimuli-responsive polymers in solution investigated by NMR and infrared spectroscopy
skos:prefLabel
Stimuli-responsive polymers in solution investigated by NMR and infrared spectroscopy Stimuli-responsive polymers in solution investigated by NMR and infrared spectroscopy
skos:notation
RIV/61389013:_____/11:00360533!RIV12-AV0-61389013
n18:predkladatel
n19:ico%3A61389013
n3:aktivita
n11:P n11:Z
n3:aktivity
P(GA202/09/1281), Z(AV0Z40500505)
n3:cisloPeriodika
1
n3:dodaniDat
n8:2012
n3:domaciTvurceVysledku
n20:1518755 n20:5974518
n3:druhVysledku
n13:J
n3:duvernostUdaju
n15:S
n3:entitaPredkladatele
n5:predkladatel
n3:idSjednocenehoVysledku
232398
n3:idVysledku
RIV/61389013:_____/11:00360533
n3:jazykVysledku
n4:eng
n3:klicovaSlova
aqueous solutions; infrared spectroscopy; NMR
n3:klicoveSlovo
n10:NMR n10:aqueous%20solutions n10:infrared%20spectroscopy
n3:kodStatuVydavatele
DE - Spolková republika Německo
n3:kontrolniKodProRIV
[0E135EBA7E20]
n3:nazevZdroje
Macromolecular Symposia
n3:obor
n14:CD
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
2
n3:projekt
n16:GA202%2F09%2F1281
n3:rokUplatneniVysledku
n8:2011
n3:svazekPeriodika
303
n3:tvurceVysledku
Dybal, Jiří Spěváček, Jiří
n3:wos
000298817400003
n3:zamer
n6:AV0Z40500505
s:issn
1022-1360
s:numberOfPages
9
n12:doi
10.1002/masy.201150503