Miscibility in blends of poly(3-hydroxybutyrate) and poly(vinylidene chloride-co-acrylonitrile)

Jeong Chang Lee, Ken Nakajima, Takayuki Ikehara, Toshio Nishi

    Research output: Contribution to journalArticlepeer-review

    30 Citations (Scopus)


    Miscibility behavior of poly(3-hydroxybutyrate) [PHB]/poly(vinylidene chloride-co-acrylonitrile) [P(VDC-AN)] blends have been investigated by differential scanning calorimetry and optical microscopy. Each blend showed a single Tg, and a large melting point depression of PHB. All the blends containing more than 40% PHB showed linear spherulitic growth behavior and the growth rate decreased with P(VDC-AN) content. The interaction parameter χ12, obtained from melting point depression analysis, gave the value of -0.267 for the PHB/P(VDC-AN) blends. All results presented in this article lead to the conclusion that PHB/P(VDC-AN) blends are completely miscible in all proportions from a thermodynamic viewpoint. The miscibility in these blends is ascribed to the specific molecular interaction involving the carbonyl groups of PHB.

    Original languageEnglish
    Pages (from-to)2645-2652
    Number of pages8
    JournalJournal of Polymer Science, Part B: Polymer Physics
    Issue number16
    Publication statusPublished - 1997 Nov 30


    • Melting point depression
    • Molecular interaction parameter
    • Poly(3-hydroxybutyrate)
    • Poly(vinylidene chloride)
    • Polymer blend

    ASJC Scopus subject areas

    • Condensed Matter Physics
    • Physical and Theoretical Chemistry
    • Polymers and Plastics
    • Materials Chemistry


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