Processing and characterization of microcellular PHBV/PBAT blends

Alireza Javadi, Adam J. Kramschuster, Srikanth Pilla, Jungjoo Lee, Shaoqin Gong*, Lih Sheng Turng

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

96 Scopus citations


Solid and microcellular specimens made of poly (3-hydroxybutyrate-co-3- hydroxyvalerate)(PHBV)/ poly(butylene adipate-co-terephthalate) (PBAT) blends with three different weight ratios (i.e., PHBV/PBAT = 98.5/1.5 (Y1000P), 45/55 (5010P), and 30/70 (6010P), respectively) were prepared via conventional and microcellular injection molding process, respectively. Various properties such as miscibility, cell morphology, thermal, and mechanical properties were investigated. Compared with the microcellular specimens, the solid specimens showed better miscibility. Increasing the PBAT content led to higher specific toughness and strain-at-break, but lower specific modulus and specific strength for both solid and microcellular specimens. In addition, increasing the PBAT content increased the average cell size, but decreased the cell density of the microcellular samples. Finally, the crystallinity of PHBV in the PHBV/PBAT blends decreased significantly with increasing PBATcontent for both solid and microcellular specimens. POLYM. ENG. SCI., 50:1440-1448, 2010.

Original languageEnglish
Pages (from-to)1440-1448
Number of pages9
JournalPolymer Engineering and Science
Issue number7
StatePublished - 07 2010
Externally publishedYes


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