What happens when a polyethene or acete rod is rubbed against a duster?

1)The friction allows the electrons on the duster to gain enough energy to jump onto the polythene rod 2)The polythene rod has gained electrons giving it a negative charge, the duster loses electrons giving it a positive charge 3)However for the acete rod, the electrons jump off onto the duster giving it a negative charge and the acete rod gets a positive charge.