Self-assembly of Block Copolymers with Grafted Nanoparticles under Hard Confinement
Self-consistent field method(SCFT)is used to study the self-assembly behavior of two block co-polymers and grafted homopolymer nanoparticles under hard restriction,and discusses the influence of the nature and restriction degree of plate on the phase behavior of the system in detail.It is found that with the restriction degree and plate property change.When the AB two-block copolymers are symmetric(fa=fb=0.5),In the case of small system limitation(70≤N2 ≤120),the system changes,no matter how the properties of the plate change.When the restriction increases(40≤N2 ≤60),the system will gradually self-assemble to form concentric ring structure in the neutral plate,the system will gradually form column structure and parallel layered structure;in the attractive A group plate,the system will self-assemble to form ribbon,layered and concentric ring struc-ture.When restricted(20 ≤N2 ≤30),the system eventually transforms into A vertical layered structure in the neutral plate and the attractive group A component plate,and the system is self-assembled into A parallel layered structure.Finally,explore the effects of the entropy effect on the architecture formation.
Block copolymersNanoparticlesHard-constrainedSelf-consistent field method