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


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.

Publication DOI:
Divisions: College of Engineering & Physical Sciences > School of Infrastructure and Sustainable Engineering > Chemical Engineering & Applied Chemistry
College of Engineering & Physical Sciences > Aston Institute of Materials Research (AIMR)
Additional Information: 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 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Uncontrolled Keywords: compatibilization,immiscible blend,poly(l -lactide),poly(l -lactide-co-caprolactone,thermoplastic polyurethane elastomer,Organic Chemistry,Materials Chemistry,Polymers and Plastics,Condensed Matter Physics
Publication ISSN: 1521-3900
Last Modified: 08 Jul 2024 07:19
Date Deposited: 19 Aug 2019 10:07
Full Text Link: http://onlineli ... 400057/abstract
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Special issue
Published Date: 2015-08
Published Online Date: 2015-08-25
Authors: Suthapakti, Kanyarat
Molloy, Robert
Punyodom, Winita
Nalampang, Kanarat
Leejarkpai, Thanawadee
Topham, Paul D. (ORCID Profile 0000-0003-4152-6976)
Tighe, Brian J. (ORCID Profile 0000-0001-9601-8501)



Version: Accepted Version

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