Study of injection molded microcellular polylactide (PLA)/poly(butylenes adipate-co-terephthalate) (PBAT) blends with various composition ratios

Ke Li*, Jun Peng, Xiaofei Sun, Lih Sheng Turng, Hanxiong Huang

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Foamed poly(lactide) (PLA)/poly(butylene adipate-co-terephthalate) (PBAT) blends were processed via the microcellular injection molding process using supercritical N2 as a blowing agent. The effect of composition ratio on cell morphology, thermal properties, and mechanical properties of microcellular PLA/PBAT blends was investigated. Results showed that neat PLA presented a relatively small cell size and that the cell size became larger from the skin area to the central area of the sample. With increasing PBAT content (0-70 wt%), the cell size also increased, while the size distribution of the cells became uniform. In addition, the thermal properties of PLA, especially the glass transition temperature, Tg, were slightly affected by the addition of PBAT. The crystallization behavior of the PLA matrix was noticeably influenced. The PLA/PBAT blends showed decreased tensile strength and modulus, while the elongation was dramatically increased with increasing PBAT content.

Original languageEnglish
Title of host publication69th Annual Technical Conference of the Society of Plastics Engineers 2011, ANTEC 2011
Pages2779-2783
Number of pages5
StatePublished - 2011
Externally publishedYes
Event69th Annual Technical Conference of the Society of Plastics Engineers 2011, ANTEC 2011 - Boston, MA, United States
Duration: 01 05 201105 05 2011

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume3

Conference

Conference69th Annual Technical Conference of the Society of Plastics Engineers 2011, ANTEC 2011
Country/TerritoryUnited States
CityBoston, MA
Period01/05/1105/05/11

Keywords

  • Blend
  • Composition
  • Foam
  • Microcellular
  • PLA

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