Prior to the morphological study of sulphur-prevulcanised
rubber particles embedded in a PS matrix, the percentage
conversion of styrene containing swollen,
transferred vulcanised rubber (3% NR, with SDS), when
using various initiator concentrations (0.4, 0.6 or
1.0% w/w of BPO), at 70 C was determined and the
data are shown in Fig. 5.