Additive Effects on Phase Transition and Interactions in Poly(vinyl methyl ether) Solutions
AbstractA comparative study of thermal response of poly(vinyl methyl ether) in the presence of different hydrophilic and hydrophobic additives was performed by Nuclear magnetic resonance (NMR) spectroscopy, Fourier-transform infrared (FTIR) spectroscopy, differential scanning calorimetry (DSC), and optical microscopy. The effect of polymer concentration and additive content on the appearance and extent of the phase transition was determined. A detailed study of interaction mechanism in solutions with two hydrophobic additives showed differences in the way in which polymer globules are formed. For solutions containing t-butyl methyl ketone and t-butanol, measurements of 1H spin-spin relaxations showed the presence of water and additive molecules bound in PVME globular structures. These originally-bound molecules are then slowly released from the globular-like structures. Incorporation of molecules into the globules disrupts the cooperativity of the transition and affects the size of globular structures. View Full-Text
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Starovoytova, L.; Šťastná, J.; Šturcová, A.; Konefal, R.; Dybal, J.; Velychkivska, N.; Radecki, M.; Hanyková, L. Additive Effects on Phase Transition and Interactions in Poly(vinyl methyl ether) Solutions. Polymers 2015, 7, 2572-2583.
Starovoytova L, Šťastná J, Šturcová A, Konefal R, Dybal J, Velychkivska N, Radecki M, Hanyková L. Additive Effects on Phase Transition and Interactions in Poly(vinyl methyl ether) Solutions. Polymers. 2015; 7(12):2572-2583.Chicago/Turabian Style
Starovoytova, Larisa; Šťastná, Julie; Šturcová, Adriana; Konefal, Rafal; Dybal, Jiří; Velychkivska, Nadiia; Radecki, Marek; Hanyková, Lenka. 2015. "Additive Effects on Phase Transition and Interactions in Poly(vinyl methyl ether) Solutions." Polymers 7, no. 12: 2572-2583.