Spherulitic morphology and growth of poly(vinylidene fluoride)/poly(3- hydroxybutyrate-co-hydroxyvalerate) blends by optical microscopy

Zhaobin Qiu, So Fujinami, Motonori Komura, Ken Nakajima, Takayuki Ikehara, Toshio Nishi

    Research output: Contribution to journalArticle

    41 Citations (Scopus)

    Abstract

    Poly(vinylidene fluoride) (PVDF) and poly(3-hydroxybutyrate-co- hydroxyvalerate) (PHBV), both semicrystalline polymers, are miscible as shown by the single glass transition temperature over the entire composition range. Morphology of PVDF/PHBV blends was investigated by optical microscopy under two different crystallization conditions. PVDF showed the spherulitic morphology at 150°C in the PVDF/PHBV blends, where PHBV acted as the noncrystallizing component. PHBV also showed the spherulitic morphology within the matrix of the pre-existing PVDF crystals when PVDF/PHBV blends were quenched from the melt to the crystallization temperature below the melting point of PHBV. The spherulitic growth of PHBV was investigated as the function of both blend composition and crystallization temperature.

    Original languageEnglish
    Pages (from-to)4355-4360
    Number of pages6
    JournalPolymer
    Volume45
    Issue number13
    DOIs
    Publication statusPublished - 2004 Jun

    Keywords

    • Crystalline/crystalline blends
    • Miscibility
    • Morphology

    ASJC Scopus subject areas

    • Organic Chemistry
    • Polymers and Plastics
    • Materials Chemistry

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