שאלה | Olefin polymers made by complex metal coordination catalysts generally can have better mechanical properties than the same polymers made by free radical or cationic polymerization. The reason for this is (Choose from the following four possibilities)

Olefin polymers made by complex metal coordination catalysts generally can have better mechanical properties than the same polymers made by free radical or cationic polymerization. The reason for this is (Choose from the following four possibilities)

		The coordination catalysts introduce polar groups resulting in stronger polymer chain interactions
		Metal coordination of the growing polymer chain changes the chemical structure of the monomer as it is added to the growing chain end to give a polymer with stronger non covalent chain interactions
		Metal coordination of the growing polymer chain allows for steric orientation of the monomer addition and enhances final polymer crystallization.
		Coordination catalysts formpolymers with a crosslinked network that improves mechanical strength.