polybutadiene butadiene cis chm chain arrangement molecule polymerisation bond second step double case been also var wid = '532662'; var uid = '2233...
cis trans polymer configuration bond double bonds form arrangement polybutadiene butadiene isomers steric barrier energy var wid = '532662'; var uid = '2233...
polybutadiene butadiene polymerization rubber polymer poly trans styrene double production bonds molecular synthetic type structure used cis htpb terminated mechanism var wid = '532662'; var uid = '2233...