The un-reacted SMA was removed with a rotary evaporator under reduced pressure for about 30 min at 353 K. The reacted latex was poured into a petri dish and dried in an oven at 323 K for about 2 days (until dry) and in a vacuum oven for 3 days at 323 K. The reacted rubber was subjected to Soxhlet extraction under nitrogen atmosphere in the dark for 24 h to remove homopolymer