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Statements

Subject Item
n2:RIV%2F61389013%3A_____%2F14%3A00431207%21RIV15-GA0-61389013
rdf:type
n11:Vysledek skos:Concept
dcterms:description
FTIR spectroscopy and quantum chemical calculations have been used to explore the system of high-molecular mass pair of miscible polymers poly(N-methyldodecano-12-lactam) (PMDL) and poly(4-vinylphenol) (PVPh) in tetrahydrofuran (THF) that is known to undergo associative phase separation into a gel-like interpolymer complex and a soluble residual phase (RP). Using quantum chemical calculations, two types of hydrogen bonding interactions involving the C=O group of PMDL and either one or two O-H groups of PVPh were identified in the FTIR spectra of both the complex and RP. Although relatively small differences were found between the FTIR spectra of the complex and RP, detailed analysis of the C=O stretching region revealed that in the complex, the stronger H-bonding interactions of the C=O groups with two O-H groups slightly outnumbered those in RP. In addition, a proof was added to the recent claim that fractionation accompanied the process of H-bond formation and complex precipitation but did not precede it. Finally, it was suggested that change in thermodynamic quality of solvent took place due to the complexation of the two polymers; the complex stability in a polar proton-donating solvent was tested as well. FTIR spectroscopy and quantum chemical calculations have been used to explore the system of high-molecular mass pair of miscible polymers poly(N-methyldodecano-12-lactam) (PMDL) and poly(4-vinylphenol) (PVPh) in tetrahydrofuran (THF) that is known to undergo associative phase separation into a gel-like interpolymer complex and a soluble residual phase (RP). Using quantum chemical calculations, two types of hydrogen bonding interactions involving the C=O group of PMDL and either one or two O-H groups of PVPh were identified in the FTIR spectra of both the complex and RP. Although relatively small differences were found between the FTIR spectra of the complex and RP, detailed analysis of the C=O stretching region revealed that in the complex, the stronger H-bonding interactions of the C=O groups with two O-H groups slightly outnumbered those in RP. In addition, a proof was added to the recent claim that fractionation accompanied the process of H-bond formation and complex precipitation but did not precede it. Finally, it was suggested that change in thermodynamic quality of solvent took place due to the complexation of the two polymers; the complex stability in a polar proton-donating solvent was tested as well.
dcterms:title
Fourier-transform infrared spectroscopic study of a fractional-complexed polymer blend Fourier-transform infrared spectroscopic study of a fractional-complexed polymer blend
skos:prefLabel
Fourier-transform infrared spectroscopic study of a fractional-complexed polymer blend Fourier-transform infrared spectroscopic study of a fractional-complexed polymer blend
skos:notation
RIV/61389013:_____/14:00431207!RIV15-GA0-61389013
n3:aktivita
n16:I n16:P
n3:aktivity
I, P(GAP108/12/0703)
n3:cisloPeriodika
October
n3:dodaniDat
n4:2015
n3:domaciTvurceVysledku
n9:1926284 n9:5033470 n9:9400540 n9:1518755
n3:druhVysledku
n15:J
n3:duvernostUdaju
n5:S
n3:entitaPredkladatele
n18:predkladatel
n3:idSjednocenehoVysledku
17374
n3:idVysledku
RIV/61389013:_____/14:00431207
n3:jazykVysledku
n13:eng
n3:klicovaSlova
miscible blend; inter-polymer complex; associative phase separation
n3:klicoveSlovo
n10:inter-polymer%20complex n10:miscible%20blend n10:associative%20phase%20separation
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[C59C6BD9C4D7]
n3:nazevZdroje
European Polymer Journal
n3:obor
n12:CD
n3:pocetDomacichTvurcuVysledku
4
n3:pocetTvurcuVysledku
4
n3:projekt
n14:GAP108%2F12%2F0703
n3:rokUplatneniVysledku
n4:2014
n3:svazekPeriodika
59
n3:tvurceVysledku
Dybal, Jiří Šturcová, Adriana Sikora, Antonín Kratochvíl, Jaroslav
n3:wos
000343341100023
s:issn
0014-3057
s:numberOfPages
8
n17:doi
10.1016/j.eurpolymj.2014.07.036