Improvement of microstructures and properties of biodegradable PLLA and PCL blends compatibilized with a triblock copolymer

V. Vilay, M. Mariatti, Zulkifli Ahmad, K. Pasomsouk, Mitsugu Todo

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Incompatibility and immiscible binary blends of poly(l-lactide) (PLLA) and poly(e{open}-caprolactone) (PCL) with 70/30wt.% composition were modified and prepared by addition of 0.5, 1 and 2phr of polyethylene oxide-polypropylene oxide-polyethylene oxide (PEO-PPO-PEO) triblock copolymer. The effect of the copolymer ratio on the microstructures and properties of the blends was investigated using proton nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, X-ray diffraction, field emission scanning electron microscope (FE-SEM), dynamic mechanical analysis, differential scanning calorimetry, thermo-gravimetric analysis, and Mode I fracture testing. The addition of the copolymer to PLLA/PCL improved its fracture toughness. A reduction in the amount of spherical of PCL upon the addition of copolymers was confirmed by FE-SEM. The glass transition temperature (Tg) and melting temperature (Tm) of PLLA and PCL shifted closer together, indicating that the blend compatibility increased. Thus, PEO-PPO-PEO can be employed as compatibilizer to improve the toughness and compatibility of PLLA/PCL blends.

Original languageEnglish
Pages (from-to)6930-6937
Number of pages8
JournalMaterials Science and Engineering A
Volume527
Issue number26
DOIs
Publication statusPublished - Oct 1 2010

Fingerprint

Polyethylene oxides
Block copolymers
copolymers
Polypropylene oxides
microstructure
Microstructure
oxides
Copolymers
polyethylenes
Field emission
Electron microscopes
Fracture testing
Scanning
polypropylene
compatibility
scanning
Compatibilizers
field emission
Dynamic mechanical analysis
electron microscopes

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Improvement of microstructures and properties of biodegradable PLLA and PCL blends compatibilized with a triblock copolymer. / Vilay, V.; Mariatti, M.; Ahmad, Zulkifli; Pasomsouk, K.; Todo, Mitsugu.

In: Materials Science and Engineering A, Vol. 527, No. 26, 01.10.2010, p. 6930-6937.

Research output: Contribution to journalArticle

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AU - Todo, Mitsugu

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