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

被引：12
|
作者：
GAUBE, J
HOCHEMER, R
KEIL, B
PFENNIG, A
机构：
[1] Institut für Chemische Technologie, Technische Hochschule Darmstadt, D-6100 Darmstadt
来源：
JOURNAL OF CHEMICAL AND ENGINEERING DATA | 1993年 / 38卷 / 02期
关键词：
D O I：
10.1021/je00010a005
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
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.
引用
收藏
页码：207 / 210
页数：4
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