title: Swelling of block copolymer nanoparticles: a process combining deformation and phase separation.
abstract: Swelling of block copolymers is a complex process in which deformation and microphase separation couple together. Here we demonstrated that nanoparticles of block copolymers and polymer composites which have a large variety of phase separation patterns and different shapes can be generated through swelling process. Particularly, we focused on the swelling process of lamellae-forming diblock copolymer nanoparticles and first observed the formation of terrace edges in diblock copolymer nanoparticles as a metastable microstructure in swelling. Moreover, the trace amount of swelling solvent shows a significant influence on the shape of polymer nanoparticles, leading to block copolymer nanodisks and snowman-like composite nanoparticles.
authors.affiliation: Department of Chemistry, Renmin University of China, Beijing 100872, PR China.
authors.forename: Shilin
authors.initials: S
authors.lastname: Mei
authors.forename: Lu
authors.initials: L
authors.lastname: Wang
authors.forename: Xunda
authors.initials: X
authors.lastname: Feng
authors.forename: Zhaoxia
authors.initials: Z
authors.lastname: Jin