Question

Poly (isoprene) + sulfur is ?​

Answer 1

Answer:

The main polymers subjected to sulfur vulcanization are polyisoprene (natural rubber, NR), polybutadiene rubber (BR) and styrene-butadiene rubber (SBR), all of which are rich in unsaturated bonds. ... Vulcanization, in common with the curing of other thermosetting polymers, is generally irreversible.