Preparation and property testing of compatibilized poly(l-lactide)/thermoplastic polyurethane blends

Kanyarat Suthapakti, Robert Molloy*, Winita Punyodom, Kanarat Nalampang, Thanawadee Leejarkpai, Paul D. Topham, Brian J. Tighe

*Corresponding author for this work

Research output: Contribution to journalSpecial issue

Abstract

Poly(l-lactide) (PLL) has been blended with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer as a toughening agent and a poly(l-lactide-co-caprolactone) (PLLCL) copolymer as a compatibilizer. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends were prepared by melt mixing, characterized, hot-pressed into thin sheets and their tensile properties tested. The results showed that, although the TPU could toughen the PLL, the blends were largely immiscible leading to phase separation. However, addition of the PLLCL copolymer improved blend compatibility. The best all-round properties were found for the 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight.

Original languageEnglish
Pages (from-to)299-304
Number of pages6
JournalMacromolecular Symposia
Volume354
Issue number1
Early online date25 Aug 2015
DOIs
Publication statusPublished - Aug 2015

Fingerprint

Polyurethanes
Phase locked loops
Thermoplastics
preparation
Testing
copolymers
Copolymers
tensile properties
Elastomers
elastomers
Polycaprolactone
Compatibilizers
compatibility
Toughening
Tensile properties
Phase separation
dilactide
caprolactone
Chemical analysis

Bibliographical note

This is the peer reviewed version of the following article: Suthapakti, K., Molloy, R., Punyodom, W., Nalampang, K., Leejarkpai, T., Topham, P. D., & Tighe, B. J. (2015). Preparation and property testing of compatibilized poly(l-lactide)/thermoplastic polyurethane blends. Macromolecular symposia, 354(1), 299-304, which has been published in final form at http://dx.doi.org/10.1002/masy.201400057. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.

Keywords

  • compatibilization
  • immiscible blend
  • poly(l -lactide)
  • poly(l -lactide-co-caprolactone
  • thermoplastic polyurethane elastomer

Cite this

Suthapakti, Kanyarat ; Molloy, Robert ; Punyodom, Winita ; Nalampang, Kanarat ; Leejarkpai, Thanawadee ; Topham, Paul D. ; Tighe, Brian J. / Preparation and property testing of compatibilized poly(l-lactide)/thermoplastic polyurethane blends. In: Macromolecular Symposia. 2015 ; Vol. 354, No. 1. pp. 299-304.
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title = "Preparation and property testing of compatibilized poly(l-lactide)/thermoplastic polyurethane blends",
abstract = "Poly(l-lactide) (PLL) has been blended with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer as a toughening agent and a poly(l-lactide-co-caprolactone) (PLLCL) copolymer as a compatibilizer. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends were prepared by melt mixing, characterized, hot-pressed into thin sheets and their tensile properties tested. The results showed that, although the TPU could toughen the PLL, the blends were largely immiscible leading to phase separation. However, addition of the PLLCL copolymer improved blend compatibility. The best all-round properties were found for the 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight.",
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Preparation and property testing of compatibilized poly(l-lactide)/thermoplastic polyurethane blends. / Suthapakti, Kanyarat; Molloy, Robert; Punyodom, Winita; Nalampang, Kanarat; Leejarkpai, Thanawadee; Topham, Paul D.; Tighe, Brian J.

In: Macromolecular Symposia, Vol. 354, No. 1, 08.2015, p. 299-304.

Research output: Contribution to journalSpecial issue

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AU - Suthapakti, Kanyarat

AU - Molloy, Robert

AU - Punyodom, Winita

AU - Nalampang, Kanarat

AU - Leejarkpai, Thanawadee

AU - Topham, Paul D.

AU - Tighe, Brian J.

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PY - 2015/8

Y1 - 2015/8

N2 - Poly(l-lactide) (PLL) has been blended with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer as a toughening agent and a poly(l-lactide-co-caprolactone) (PLLCL) copolymer as a compatibilizer. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends were prepared by melt mixing, characterized, hot-pressed into thin sheets and their tensile properties tested. The results showed that, although the TPU could toughen the PLL, the blends were largely immiscible leading to phase separation. However, addition of the PLLCL copolymer improved blend compatibility. The best all-round properties were found for the 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight.

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