POLYDISPERSITY EFFECTS IN THE SYSTEM POLY(ETHYLENE GLYCOL) PLUS DEXTRAN PLUS WATER

Authors
GAUBE J HOCHEMER R KEIL B PFENNIG A
Citation
J. Gaube et al., POLYDISPERSITY EFFECTS IN THE SYSTEM POLY(ETHYLENE GLYCOL) PLUS DEXTRAN PLUS WATER, Journal of chemical and engineering data, 38(2), 1993, pp. 207-210
Citations number
5
Journal title
Journal of chemical and engineering data → ACNP
ISSN journal
00219568
Volume
38
Issue
2
Year of publication
1993
Pages
207 - 210
Database
ISI
SICI code
0021-9568(1993)38:2<207:PEITSP>2.0.ZU;2-N
Abstract
Tie lines in the system poly(ethylene glycol) (PEG) + dextran + water have been measured at 20-degrees-C. The apparent polydispersity of PEG was varied by mixing two essentially monodisperse PEG fractions in di fferent ratios. The overall phase composition for a given tie line was changed to obtain phase ratios different from unity. The concentratio ns and molecular-weight distributions of all polymers in the coexistin g liquid phases were determined using size-exclusion chromatography (S EC). The results are compared to those of systems containing monodispe rse PEG with different molecular weights.