Characterization and miscibility dynamics of dextran-poly(vinylpyrrolidone)-water system
Yükleniyor...
Dosyalar
Tarih
2011
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Wiley-V C H Verlag Gmbh
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
The miscibility behavior and intermolecular interactions among Dextran (Dx) with different molecular weight and Polyvinylpyrrolidone (PVP) blends were studied as dilute aqueous solutions at 25 degrees C by viscosity method. The intrinsic viscosity and the interaction coefficient were experimentally measured for each polymer-water as well as for Dx-PVP-water systems. These results served for the prediction of miscibility of the Dx/PVP blends with various blend compositions by using Delta[eta](m), Delta b(m), Delta k(AB), Delta B, mu and alpha parameters. Except Dx4/PVP with its all compositions (Dx4 with nominal molecular weight of 110 000), other blend systems are found to be almost miscible. The density measurements of these polymer solutions and their blends were conducted in order to compare with the viscosity findings. Lastly, all Dx with different molecular weight, PVP and their blends were characterized by infrared spectroscopy (FT-IR), and differential scanning calorimetry (DSC).
Açıklama
10th International Workshop on Polymer Reaction Engineering -- OCT 10-13, 2010 -- Univ Hamburg, Hamburg, GERMANY
Anahtar Kelimeler
Blends, Dextran, Miscibility, Poly(vinylpyrrolidone), Viscosity
Kaynak
Polymer Reaction Engineering - 10Th International Workshop
WoS Q Değeri
N/A
Scopus Q Değeri
Q3
Cilt
302
