Thermoplastic polyurethane elastomers from bio-based poly(δ- decalactone) diols

Donglin Tang, Christopher W. Macosko, Marc A. Hillmyer

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

Bio-based poly(δ-decalactone) is an amorphous, low glass transition temperature (Tg) material and it is an aliphatic polyester (Martello et al., ACS Macro Lett., 2011) that can be utilized as a soft segment in thermoplastic polyurethanes (TPU). We describe the synthesis and purification of low molar mass poly(δ-decalactone) diols (PdDL), as well as the synthesis and characterization of new PdDL-based TPUs. The PdDLs obtained were characterized by proton nuclear magnetic resonance (1H-NMR) spectroscopy and matrix-assisted laser desorption ionization mass spectroscopy. Three different PdDLs were prepared and their molar masses calculated from 1H-NMR spectroscopy were: Mn ≈ 1300, 1800 and 2700 g mol-1. These three PdDLs were reacted with 4,4′- methylenebis(phenyl isocyanate) and two different chain extenders (1,4-butanediol and water), to synthesize polyester-based TPUs. The TPUs made from PdDLs with Mn of 1800 and 2700 exhibit good elastomeric properties and their Tg values are around -40°C. With water as chain extender urea bonds were created, which gave TPUs with higher modulus, higher stress at break and lower hysteresis. This journal is

Original languageEnglish (US)
Pages (from-to)3231-3237
Number of pages7
JournalPolymer Chemistry
Volume5
Issue number9
DOIs
StatePublished - May 7 2014

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