Biodegradable compatibilized poly(L-lactide)/thermoplastic polyurethane blends: design, preparation and property testing

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

Research output: Contribution to journalArticle

Abstract

Biodegradable blends of poly(l-lactide) (PLL) toughened with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer and compatibilized with a purpose-designed poly(l-lactide-co-caprolactone) (PLLCL) copolymer were prepared. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends of various compositions were prepared by melt mixing, hot-pressed into thin films and their properties tested. The results showed that, although the TPU could toughen the PLL, the blends were immiscible leading to phase separation with the TPU domains distributed in the PLL matrix. However, addition of the PLLCL copolymer could partially compatibilize the blend by improving the interfacial adhesion between the two phases. Biodegradability testing showed that the blends were biodegradable and that the PLLCL copolymer could increase the rate of biodegradation under controlled composting conditions. The 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight was found to exhibit the best all-round properties.
LanguageEnglish
JournalJournal of Environmental Polymer Degradation
Volumein press
Early online date17 Jul 2017
DOIs
Publication statusE-pub ahead of print - 17 Jul 2017

Fingerprint

Polyurethanes
Phase locked loops
Thermoplastics
Testing
Copolymers
Elastomers
Polycaprolactone
Composting
Biodegradability
Biodegradation
Chemical analysis
Phase separation
poly(lactide)
dilactide
Adhesion
caprolactone
Thin films

Bibliographical note

The final publication is available at Springer via http://dx.doi.org/10.1007/s10924-017-1082-6

Keywords

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

Cite this

Suthapakti, Kanyarat ; Molloy, Robert ; Punyodom, Winita ; Nalampang, Kanarat ; Leejarkpai, Thanawadee ; Topham, Paul D. ; Tighe, Brian J. / Biodegradable compatibilized poly(L-lactide)/thermoplastic polyurethane blends : design, preparation and property testing. 2017 ; Vol. in press.
@article{f4a310b916204f62aafb2f65347d60d1,
title = "Biodegradable compatibilized poly(L-lactide)/thermoplastic polyurethane blends: design, preparation and property testing",
abstract = "Biodegradable blends of poly(l-lactide) (PLL) toughened with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer and compatibilized with a purpose-designed poly(l-lactide-co-caprolactone) (PLLCL) copolymer were prepared. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends of various compositions were prepared by melt mixing, hot-pressed into thin films and their properties tested. The results showed that, although the TPU could toughen the PLL, the blends were immiscible leading to phase separation with the TPU domains distributed in the PLL matrix. However, addition of the PLLCL copolymer could partially compatibilize the blend by improving the interfacial adhesion between the two phases. Biodegradability testing showed that the blends were biodegradable and that the PLLCL copolymer could increase the rate of biodegradation under controlled composting conditions. The 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight was found to exhibit the best all-round properties.",
keywords = "poly(l-lactide) , thermoplastic polyurethane elastomer, poly(l-lactide-co-caprolactone) , immiscible blend, compatibilization, biodegradability",
author = "Kanyarat Suthapakti and Robert Molloy and Winita Punyodom and Kanarat Nalampang and Thanawadee Leejarkpai and Topham, {Paul D.} and Tighe, {Brian J.}",
note = "The final publication is available at Springer via http://dx.doi.org/10.1007/s10924-017-1082-6",
year = "2017",
month = "7",
day = "17",
doi = "10.1007/s10924-017-1082-6",
language = "English",
volume = "in press",

}

Biodegradable compatibilized poly(L-lactide)/thermoplastic polyurethane blends : design, preparation and property testing. / Suthapakti, Kanyarat; Molloy, Robert; Punyodom, Winita; Nalampang, Kanarat; Leejarkpai, Thanawadee; Topham, Paul D.; Tighe, Brian J.

Vol. in press, 17.07.2017.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Biodegradable compatibilized poly(L-lactide)/thermoplastic polyurethane blends

T2 - design, preparation and property testing

AU - Suthapakti, Kanyarat

AU - Molloy, Robert

AU - Punyodom, Winita

AU - Nalampang, Kanarat

AU - Leejarkpai, Thanawadee

AU - Topham, Paul D.

AU - Tighe, Brian J.

N1 - The final publication is available at Springer via http://dx.doi.org/10.1007/s10924-017-1082-6

PY - 2017/7/17

Y1 - 2017/7/17

N2 - Biodegradable blends of poly(l-lactide) (PLL) toughened with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer and compatibilized with a purpose-designed poly(l-lactide-co-caprolactone) (PLLCL) copolymer were prepared. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends of various compositions were prepared by melt mixing, hot-pressed into thin films and their properties tested. The results showed that, although the TPU could toughen the PLL, the blends were immiscible leading to phase separation with the TPU domains distributed in the PLL matrix. However, addition of the PLLCL copolymer could partially compatibilize the blend by improving the interfacial adhesion between the two phases. Biodegradability testing showed that the blends were biodegradable and that the PLLCL copolymer could increase the rate of biodegradation under controlled composting conditions. The 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight was found to exhibit the best all-round properties.

AB - Biodegradable blends of poly(l-lactide) (PLL) toughened with a polycaprolactone-based thermoplastic polyurethane (TPU) elastomer and compatibilized with a purpose-designed poly(l-lactide-co-caprolactone) (PLLCL) copolymer were prepared. Both 2-component (PLL/TPU) and 3-component (PLL/TPU/PLLCL) blends of various compositions were prepared by melt mixing, hot-pressed into thin films and their properties tested. The results showed that, although the TPU could toughen the PLL, the blends were immiscible leading to phase separation with the TPU domains distributed in the PLL matrix. However, addition of the PLLCL copolymer could partially compatibilize the blend by improving the interfacial adhesion between the two phases. Biodegradability testing showed that the blends were biodegradable and that the PLLCL copolymer could increase the rate of biodegradation under controlled composting conditions. The 3-component blend of composition PLL/TPU/PLLCL = 90/10/10 parts by weight was found to exhibit the best all-round properties.

KW - poly(l-lactide)

KW - thermoplastic polyurethane elastomer

KW - poly(l-lactide-co-caprolactone)

KW - immiscible blend

KW - compatibilization

KW - biodegradability

UR - https://link.springer.com/article/10.1007%2Fs10924-017-1082-6

UR - http://www.scopus.com/inward/record.url?scp=85024500610&partnerID=8YFLogxK

U2 - 10.1007/s10924-017-1082-6

DO - 10.1007/s10924-017-1082-6

M3 - Article

VL - in press

ER -