Time-resolved small-angle neutron scattering study on later stage spinodal decomposition of polymer blend

Hiroshi Jinnai, Hirokazu Hasegawa, Takeji Hashimoto, Charles C. Han

Research output: Contribution to journalConference articlepeer-review


Recently there have been a number of studies on the kinetics of phase separation of polymer blends in early stage spinodal decomposition (SD) and on self-assembling processes, dynamics, and pattern (morphology) in the later stage SD as a problem of non-equilibrium statistical mechanics of long chain molecules. Most of the experimental studies utilized time-resolved light scattering (LS) methods 1-5, and only a limited number of studies utilized time-resolved small-angle neutron scattering (SANS) and small-angle X-ray scattering (SAXS) methods. We investigated the time evolution of the interfacial structure using time-resolved SANS and LS on the same blend specimens. In this report we discuss general trends on the time-change of SANS profiles in detail and the result on the time-evolution of the composition difference between two coexisting domains in the later stage SD. Deuterated polybutadiene and protonated polyisoprene samples used in this study were synthesized by a living anionic polymerization.

Original languageEnglish
Pages (from-to)141-142
Number of pages2
JournalAmerican Chemical Society, Polymer Preprints, Division of Polymer Chemistry
Issue number2
Publication statusPublished - 1990 Aug
EventPapers presented at the Washington, DC Meeting 1990 of the ACS, Division of Polymer Chemistry - Washington, DC, USA
Duration: 1990 Aug 261990 Aug 31


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