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

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 different ratios. The overall phase composition for a given tie line was changed to obtain phase ratios different from unity. The concentrations and molecular-weight distributions of all polymers in the coexisting liquid phases were determined using size-exclusion chromatography (SEC). The results are compared to those of systems containing monodisperse PEG with different molecular weights.

Wenn Sie Interesse an einer elektronischen Kopie haben, benutzen Sie bitte unser Onlineformular