Polyethylene-polystyrene gradient polymers. II. The swelling-induced crystallization in the PE-PS gradient polymers and modified by styrene LDPE samples

In this paper, the swelling-induced crystallization effect observed in gradient polymers and in low density polyethylene modified by styrene is discussed. The polymerization-induced crystallization in the PE-PS gradient polymers is demonstrated and its influence on the crystalline phase stability in the LDPE matrix exhibited. Some new information about the specific, internal structure of the gradient polymers is presented, which confirms the differences between formation of these substances and other gradient polymers previously investigated.