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 journalArticlepeer-review

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
Externally publishedYes

Keywords

  • Crystalline/crystalline blends
  • Miscibility
  • Morphology

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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