Vinylbenzyl-terminated polystyrene (PS) and polyisoprene (PI) macromonomers were synthesized by the coupling reaction of corresponding living anions with p-chloromethylstyrene. Anionic copolymerizations of binary PS and PI macromonomers were carried out in benzene with n-butyllithium as an initiator. The reactivity ratios of these systems were close to an azeotropic copolymerization. We studied the microphase separation of A.B. star-like (comb-shaped) copolymers by electron microscopy. A.B. star copolymers formed clear microphase-separated structures and their domain sizes were smaller than those of corresponding diblock copolymers.
Посилання на статтю:
Synthesis of heteroarm star copolymers by anionic copolymerization of binary macrornonomers / Koji Ishizu* and Kazuo Kuwahara // Polymer. – 1994. – Vol 35. – P. 4907-4913.