Synthesis and microphase separation of linear triblock terpolymers of polystyrene, high 1,4-polybutadiene, and high 3,4-polyisoprene

Apostolos Avgeropoulos, Stella Paraskeva, Nikos Hadjichristidis*, Edwin L. Thomas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

40 Scopus citations

Abstract

We introduce a new combination of diene/diene microstructures to form microphase-separated ABC terpolymers. The synthesis and morphology of two triblock terpolymers of the poly-(butadiene-b-styrene-b-isoprene) (BSI) type and one poly(styrene-b-butadiene-b-isoprene) (SBI) type are reported. The microstructure for the PB block was 92 wt % 1,4- and 8 wt % 1,2- and for the PI block 54 wt % 3,4-, 16 wt % 1,2-, and 30 wt % 1,4-. A three-component microphase-separated system occurred even when the two diene blocks were adjacent, as in the SBI sequence, leading to the conclusion that the PB:PI 1,4/3,4 diene combination has a larger Flory-Huggins χ parameter than the other three possible combinations of PB:PI diene microstructures. A new type of cylindrical microdomain structure with alternating types of diene regions along the cylinder axis is observed.

Original languageEnglish (US)
Pages (from-to)4030-4035
Number of pages6
JournalMacromolecules
Volume35
Issue number10
DOIs
StatePublished - May 7 2002
Externally publishedYes

ASJC Scopus subject areas

  • Materials Chemistry

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