The copolymerisation was run according to Hasell's protocol, reacting equal masses of sulfur and limonene directly in the presence of zinc diethyldithiocarbamate at 140 ºC (Fig. and ). The accelerator was used at a loading of 5 wt% relative to the total mass of sulfur and limonene. Within 30 minutes the reaction appeared to form a single phase. After 24 hours, 1 H NMR analysis indicated complete consumption of the limonene alkenes (Fig. ). To ensure that all sulfur was consumed, the reaction was continued for 7 days. The additional reaction time did not lead to detectable changes by 1 H NMR or gel permeation chromatography (GPC)