Light scattering from PVC solutions

Characterization of poly (vinyl chloride) prepared by radiation‐induced bulk poly‐merization at temperatures from −50° TO 90°C

“…With PVC (50"C), however, the Sindependence was only confined, as shown in the example of Figure 2, to the regions of the higher 8's (from about 90" upwards), in agreement with previous findings relative to this conventional type of PVC, especially when ameliorative treatments were not em-Since for the anomalous Zimm plots here the polymermization additives cannot be invoked and any imperfect clarification of the solutions can be conceivably excluded, bearing in mind that no such trouble was encountered ploy4. 12,16,17,19,21 with the more critical cases of the PVC (90°C) samples with lower gw, the above mentioned extrapolation19121 allowing for the presence of small amounts of microgels was adopted. Such an extrapolation, giving rise to lines parallel to the x axis, is exemplified in Figure 2.…”