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Viscometric Studies of Poly(ethylene glycol), Poly(vinyl alcohol) and Poly(vinyl chloride) and Their Mixtures in Water and Chlorobenzene

Harun Ur Rashid ; 20, Carpenter Court, Markham, Ontario, Canada L3P 6W2

Sažetak

Absolute viscosities of semi-dilute solutions of polytethylene.
glycol) and poly(vinyl alcohol) and their mixtures in water and of
poly(ethylene glycol) and poly(vinyl chloride) and the ir mixtures
in chlorobenzene have been measured at 30 C C. The viscosities
of poly(vinyl alcohol) and poly(vinyl chloride) increase sharply
with concentration. The plots of viscosity of polymer mixtures
against composition deviate from linearity. The effect of total
polymer content on the viscosity of mixtures has also been
studied. The' results are discussed in terms of the association of
similar type macromolecules and compatibility between dissimilar
types of macromolecules. Theoretical predictions of compatibility/
incompatibility have also been made for these systems.
It appears that poly(viniy alcohol) and poly(vinyl chloride) macromolecules associate at higher concentrations and poly(ethylene glycol) is incompatible with poly(vinyl alcohol), but compatible with poly(vinyl chloride) in water and chlorobenzene, respectively.

Ključne riječi

Hrčak ID:

175379

URI

https://hrcak.srce.hr/175379

Datum izdavanja:

30.3.1989.

Posjeta: 743 *