Styrene(S)--isoprene(l) multibiock copolymers of the (SI), type (n = 1, 2, 3, 4) were prepared by a multistep monomer addition technique of anionic polymerization. Molecular weights of SI diblock units are almost the same and the total polystyrene volume fractions are about 0.5. All the film specimens cast from toluene solutions were found to have alternating lamellar structures. The lameUar domain spacing monotonically decreases and approaches an asymptotic value with increasing the number of blocks.
Посилання на статтю:
Preparation and morphology of multiblock copolymers of the (AB)n type / Yushu Matsushita, Yasuhiro Mogit, Hiroaki Mukai, Jun Watanabeand Ichiro Noda // Polymer. – 1994. – Vol 35. – P. 246-249.