Ordering phenomena in ABA triblock copolymer gels

K. Reynders, N. Mischenko, R. Kleppinger, H. Reynaers, M.H.J. Koch, K. Mortensen

    Research output: Contribution to journalConference articleResearchpeer-review


    Temperature and concentration dependencies of the degree of order in ABA triblock copolymer gels are discussed. Two factors can influence the ordering phenomena: the conformation of the midblocks (links of the network) and the polydispersity of the endblock domains (nodes of the network). The latter is defined by the scattering density profile (polymer chain packing) at the domain boundary: a sharp boundary corresponds to less polydisperse domains and to increased order in the arrangement of the network nodes. The structure of the network can be described in terms of a highly distorted crystalline lattice with close-packed spheres or with cubic (presumably BCC) equilibrium morphology. The appearance of the latter is never detected in the gels with a stretched conformation of the midblock.
    Original languageEnglish
    JournalJournal of Applied Crystallography
    Issue number2
    Pages (from-to)684-689
    Publication statusPublished - 1997
    Event10th International Conference on Small-Angle Scattering - Sao Paulo, Brazil
    Duration: 21 Jul 199625 Jul 1996
    Conference number: 10


    Conference10th International Conference on Small-Angle Scattering
    CitySao Paulo


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