In situ polymerization and properties of methyl methacrylate-butadiene- styrene resin with bimodal rubber particle size distribution

Jun Takahashi, Hideki Watanabe, Jun Nakamoto, Kazuo Arakawa, Mitsugu Todo

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    The in situ polymerization synthesis and properties of methyl methacrylate-butadiene-styrene resin (MBS resin) with bimodal rubber particle size distribution were investigated. MBS resin was prepared by bulk-suspension polymerization of styrene and methyl methacrylate in the presence of the styrene-butadiene block copolymer, and bimodal rubber particle size distribution was observed during bulk polymerization and cooling. During bulk polymerization and cooling, size distribution was regulated by the viscosity of the prepolymer or shearing for the prepolymer. The formative mechanisms of the bimodal distribution were presumed to be increase of small rubber particles by shearing and delay in changing to small rubber particles according to the difference in the inside structure of large rubber particles. MBS resin with the bimodal distribution was obtained by suspension polymerization using the prepolymer with bimodal distribution. The resin was superior with regard to balance of impact resistance and transparency.

    Original languageEnglish
    Pages (from-to)835-843
    Number of pages9
    JournalPolymer Journal
    Volume38
    Issue number8
    DOIs
    Publication statusPublished - 2006

    All Science Journal Classification (ASJC) codes

    • Polymers and Plastics
    • Materials Chemistry

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