Wf. Lee et Cc. Lai, INVESTIGATION OF THE COMPATIBILITY FOR PVC BLEND BY REDUCED VISCOMETRIC METHOD, Journal of applied polymer science, 66(4), 1997, pp. 761-775
A new method is presented to predict the compatibility of a polymer bl
end. The compatibility of the polymer-polymer pairs containing poly(vi
nyl chloride) (PVC), poly(glycidyl methacrylate) [poly(GMA)], poly(met
hyl methacrylate) [poly(MMA)], and poly(styrene) (PS) predicted by the
use of the deviation from the additivity law of the slope in the redu
ced viscosity (eta(sp)/C) versus polymer concentration (C) plot of a b
inary blend system is the purpose of this article. In addition, the in
fluence of the grafted copolymer (PVC-g-GMA) on the compatibility of P
VC-poly(GMA) pairs is also investigated by this reduced viscosity meth
od and also confirmed by the differential scanning calorimetric techni
que. The results contrasted to the thermodynamic principle showed that
the polymer blends could be considered to be a compatible blend when
the deviation values deviated from the additivity law of the slopes in
the eta(sp)/C vs. C plot are smaller than 15%. (C) 1997 John Wiley &
Sons, Inc.