title: Superlattice Formation on Star Polymer Solutions
abstract: Polyisoprene (PI) stars (arm number f = 4 approximately 237) were prepared by coupling of PI monoanions with tetrachlorosilane or by cross-linking PI anions with divinylbenzene. The structural ordering of such stars was investigated through small-angle X-ray scattering. PI stars (f > ca. 90) formed a body-centered cubic (bcc) structure near the overlap threshold. This structure changed to a mixed lattice of bcc and face-centered cubic structures with increasing polymer concentration.
authors.affiliation: Department of Polymer Science, Tokyo Institute of Technology 2-12, Ookayama, Tokyo, Meguro-ku, 152, Japan
authors.initials: K
authors.lastname: Ishizu
authors.initials: T
authors.lastname: Ono
authors.initials: S
authors.lastname: Uchida