Interface manipulated two-phase nanostructure in a triblock terpolymer with a short middle segment

Morphology control and inducing a curvature on the domain interface by increasing the steric bulk of polymethacrylate in POSS-containing diblock copolymers

“…The addition of a short, soft PI block between the PS and PMAPOSS domains decreases the strength of segregation on the boundary, creating a controlled interfacial region (CIR) that allowed for the system to adopt a non‐zero interfacial curvature required for forming cylinders on the domain boundary. In another study, the addition of a short middle segment of PMMA between the microphase separated domains of PS and PTFEMA allowed for the formation of an unconventional partially continuous oblate cylindrical morphology with a non‐zero mean interfacial curvature that is not normally observed in typical diblock or triblock copolymers . However, the synthesis of a triblock copolymer requires a complex multi‐step synthetic process that requires pinpoint tuning of the volume fractions of each block.…”

Morphological dependence on the addition of a soft middle block segment to rigid POSS-containing triblock copolymers for forming cylindrical nanostructures

“…[29][30][31][32] Herein, based on earlier work done by our group, 33 we introduced a short polyisoprene (PI) middle block onto a POSS-containing triblock copolymer with polystyrene (PS) and PMAPOSS at the ends. Signicant thermodynamic incompatibility between two sufficiently large and dissimilar polymer blocks are required for microphase-separation.…”