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Interaction of poly(ethylene oxide) with solvent—5. The densities of water/poly(ethylene glycol) mixtures

✍ Scribed by N.B. Graham; C.F. Chen

Publisher
Elsevier Science
Year
1993
Tongue
English
Weight
235 KB
Volume
29
Category
Article
ISSN
0014-3057

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✦ Synopsis

The interaction of water with poly(ethylene glycols) has been studied by measuring the density of aqueous solutions of a series of poly(ethylene glycols) (PEGs) ranging in number average molecular weights from 106 to 5607. In all cases except that of diethylene glycol the slope of the density/composition plot showed a marked change at particular compositions. These indicate that a tetrahydrate forms in the case of PEG300 and PEG400 (M,: 429 by GPC) contrasting with a trihydrate and a hexahydrate for the higher molecular weights of PEGI000 (Mn: 810 by GPC) and PEG3330 (Mn: 5607 by GPC).

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