The Experts below are selected from a list of 312 Experts worldwide ranked by ideXlab platform
Charlotte K Williams - One of the best experts on this subject based on the ideXlab platform.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Koonyang Lee, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
Philippe Knauth - One of the best experts on this subject based on the ideXlab platform.
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anionic conducting composite membranes based on Aromatic Polymer and layered double hydroxides
International Journal of Hydrogen Energy, 2017Co-Authors: Luca Pasquini, Philippe Knauth, Maria Luisa Di Vona, M Casciola, Anna Donnadio, Morena Nocchetti, Riccardo NarducciAbstract:Abstract Composite anion-conducting membranes were prepared from polysulfone with grafted quaternary ammonium groups and dispersed nanoparticles of layered double hydroxide (LDH) with composition Mg 0.62 Al 0.38 (OH) 2 (Cl) 0.38 ·0.6H 2 O as inorganic filler. Two types of amines were used: small and flexible trimethylamine and bulky and rigid 1,4-diazabicyclo[2.2.2]octane (DABCO). The composite membranes have a distinctly lower water uptake and swelling and they can be hydrated at 60 °C without dissolution. Composites with DABCO have slightly lower water uptake and ionic conductivity than those with TMA. Their mechanical properties in fully humidified conditions are clearly enhanced with especially a nearly 3-fold increase of the Young modulus. In spite of their strongly reduced hydration, the conductivity of the composite membranes is comparable with that of the pristine ionomers, being in the range 2–4 mS cm −1 at 25 °C. Furthermore, the membranes can be treated in alkaline conditions at 60 °C without losing their properties and the ionic conductivity reaches 30 mS cm −1 under 95% RH.
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New Aromatic Polymer electrolytes for application in lithium metal batteries
New Journal of Chemistry, 2016Co-Authors: Vincent Morizur, Philippe Knauth, Michele Braglia, Sandra Olivero, Jean-roger Desmurs, Elisabet DuñachAbstract:We report a new synthetic strategy for single Li-ion conducting solid Polymer electrolytes based on the fully Aromatic Polymer poly(ether ether ketone) (PEEK) grafted with differently substituted bis(sulfonyl)imide groups for use in lithium metal and lithium-ion batteries. The preferred Polymer contains no fluorine and is particularly advisable from an environmental point of view. Its ionic conductivity reaches 0.03 mS cm−1 at 65 °C.
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Fluoride-ion-conducting Polymers: Ionic Conductivity and Fluoride Ion Diffusion Coefficient in Quaternized Polysulfones
ChemPhysChem, 2015Co-Authors: Luca Pasquini, Fabio Ziarelli, Stéphane Viel, Maria Luisa Di vona, Philippe KnauthAbstract:We describe the three-step synthesis of a new Polymeric fluoride ion conductor based on the fully Aromatic Polymer polysulfone (PSU). In the first step, PSU is chloromethylated (CM-PSU) using reagents (i.e., stannic chloride, paraformaldehyde, and trimethylchlorosilane) that are less toxic than those used in the standard procedure. In the second step, CM-PSU reacts with a tertiary amine (trimethylamine or 1,4-diazabicyclo[2.2.2]octane) to form quaternary ammonium groups fixed on the PSU backbone and mobile chloride counter-anions. The chloride ions can, in a third step, be exchanged with fluoride ions by immersion of the ionomer in NaF solution. The fluoride ion conductivity reaches 3-5 mScm(-1) at 25 degrees C and 5-10 mScm(-1) at 40 degrees C. We determined the F- diffusion coefficient in these ionomers by pulsed gradient spin-echo (PGSE) high-resolution magic angle spinning (HRMAS) nuclear magnetic resonance (NMR) spectroscopy and by impedance spectroscopy using the Nernst-Einstein relation. The diffusion coefficients determined by the two methods are in good agreement, ranging from 2 to 4 x 10(-10) m(2) s(-1). The porosity and tortuosity of the ionomer membranes can be estimated.
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Properties of Composite Membranes of SPEEK and Nanodiamond
MRS Online Proceedings Library, 2011Co-Authors: Hongying Hou, Philippe Knauth, Brunella Maranesi, Mustapha Khadhraoui, Riccardo Polini, M. Luisa VonaAbstract:The manufacture of composite materials can improve the properties of proton-conducting Polymers as membranes in PEM fuel cells. We have investigated composite membranes obtained by dispersion of nanodiamond particles in a sulfonated PolyEtherEtherKetone (SPEEK) matrix. SPEEK is a major proton-conducting Aromatic Polymer. Nanodiamond has been studied for various applications and can be functionalized with different surface groups. For use in proton-conducting membranes, surface functionalization with proton-donating groups is a promising approach. In this preliminary work, we have studied the properties of membranes made using pristine nanodiamond from diverse origins for a first assessment of the potential properties. The composites were analysed by various techniques, including Thermogravimetric Analysis, water vapor uptake and mechanical tensile tests.
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Mechanical properties of proton-conducting sulfonated Aromatic Polymer membranes: Stress-strain tests and dynamical analysis
Journal of Power Sources, 2010Co-Authors: E. Sgreccia, Jean-françois Chailan, M. Khadhraoui, M. L. Di Vona, Philippe KnauthAbstract:Abstract The mechanical properties of sulfonated Aromatic Polymers (SAPs: SPEEK and SPPSU) are studied by tensile stress–strain tests and dynamic mechanical analysis (DMA). The elastic moduli are generally above 1 GPa with tensile strength between 25 and 80 MPa and elongation at rupture between 7 and 50%. These properties are consistent with Polymers below their glass transition temperature. The glass transition and elastic moduli are strongly increased by thermal treatments of the SAP membranes, due to formation of cross-links between macromolecules. The cross-linking is observed “in situ” during DMA experiments on thermally untreated SPPSU. These data show that previously neglected SAPs might become very interesting PEM fuel cell membranes, if previously thermally treated.
Georgina L Gregory - One of the best experts on this subject based on the ideXlab platform.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Koonyang Lee, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
Alba Santmarti - One of the best experts on this subject based on the ideXlab platform.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Koonyang Lee, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
N J Terrill - One of the best experts on this subject based on the ideXlab platform.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Koonyang Lee, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.
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triblock polyester thermoplastic elastomers with semi Aromatic Polymer end blocks by ring opening coPolymerization
Chemical Science, 2020Co-Authors: Georgina L Gregory, Gregory S Sulley, Leticia Pena Carrodeguas, Thomas T D Chen, Alba Santmarti, N J Terrill, Charlotte K WilliamsAbstract:Thermoplastic elastomers benefit from high elasticity and straightforward (re)processability; they are widely used across a multitude of sectors. Currently, the majority derive from oil, do not degrade or undergo chemical recycling. Here a new series of ABA triblock polyesters are synthesized and show high-performances as degradable thermoplastic elastomers; their composition is poly(cyclohexene-alt-phthalate)-b-poly(e-decalactone)-b-poly(cyclohexene-alt-phthalate) {PE–PDL–PE}. The synthesis is accomplished using a zinc(II)/magnesium(II) catalyst, in a one-pot procedure where e-decalactone ring-opening Polymerization yielding dihydroxyl telechelic poly(e-decalatone) (PDL, soft-block) occurs first and, then, addition of phthalic anhydride/cyclohexene oxide ring-opening coPolymerization delivers semi-Aromatic polyester (PE, hard-block) end-blocks. The block compositions are straightforward to control, from the initial monomer stoichiometry, and conversions are high (85–98%). Two series of polyesters are prepared: (1) TBPE-1 to TBPE-5 feature an equivalent hard-block volume fraction (fhard = 0.4) and variable molar masses 40–100 kg mol−1; (2) TBPE-5 to TBPE-9 feature equivalent molar masses (∼100 kg mol−1) and variable hard-block volume fractions (0.12 1300) with linear stress–strain relationships, high ultimate tensile strengths (σb = 1–5 MPa), very high elongations at break (eb = 1000–1900%) and excellent elastic recoveries (98%). There is a wide operating temperature range (−51 to +138 °C), an operable processing temperature range (+100 to +200 °C) and excellent thermal stability (Td,5% ∼ 300 °C). The Polymers are stable in aqueous environments, at room temperature, but are hydrolyzed upon gentle heating (60 °C) and treatment with an organic acid (para-toluene sulfonic acid) or a common lipase (Novozyme® 51032). The new block polyesters show significant potential as sustainable thermoplastic elastomers with better properties than well-known styrenic block coPolymers or polylactide-derived elastomers. The straightforward synthesis allows for other commercially available and/or bio-derived lactones, epoxides and anhydrides to be developed in the future.