Microphase Separation in Normal and Inverse Tapered Block Copolymers of Polystyrene and Polyisoprene. 1. Phase State

摘要: We have investigated the influence of composition gradients on microdomain structure and viscoelastic properties tapered block copolymers by (i) varying amount interfacial material (ii) sequence. Normal inverse triblock polystyrene polyisoperne with a midblock been synthesized via anionic polymerization nearly symmetric compared corresponding diblock copolymers. found that increasing within interface systematically increases compatibility. Block sequencing is to be an important factor controlling Inverse are much more compatible than normal Results presented here could used as guideline for preparing controlled compatibility at synthesis level.