Enzyme- and metal-catalyzed synthesis of a new biobased polyester
Linear aliphatic polyesters were prepared from Pripol 1012, a diacidic C18 fatty acid dimer, and 1,3-propanediol employing a lipase or a titanium tetrabutanoate. Metal-based catalysis (route M) was carried out with a precondensation at 180 °C and 600 mbar followed by a final condensation at 220 °C a...
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American Chemical Society
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fttuhamburg:oai:tore.tuhh.de:11420/3165 2023-08-20T04:02:23+02:00 Enzyme- and metal-catalyzed synthesis of a new biobased polyester Gebhard, Jakob Neuer, Björn Luinstra, Gerrit A. Liese, Andreas 2017-08-09 http://hdl.handle.net/11420/3165 en eng American Chemical Society Organic process research & development 1083-6160 Organic Process Research and Development 9 (21): 1245-1252 (2017-09-15) http://hdl.handle.net/11420/3165 2-s2.0-85029513898 540: Chemie 620: Ingenieurwissenschaften 620 540 Journal Article Other 2017 fttuhamburg 2023-07-28T09:22:34Z Linear aliphatic polyesters were prepared from Pripol 1012, a diacidic C18 fatty acid dimer, and 1,3-propanediol employing a lipase or a titanium tetrabutanoate. Metal-based catalysis (route M) was carried out with a precondensation at 180 °C and 600 mbar followed by a final condensation at 220 °C and 0.3-0.6 mbar. Enzyme catalysis was carried out with an immobilized Candida antarctica lipase B after either a precondensation step at 180 °C and 600 mbar (route E1) or 80 °C and 100 mbar (route E2) and a final condensation at 80 °C and 0.3-0.6 mbar. Polyesters were obtained along routes M, E1, and E2 with weight-average molecular weights, Mw, at final conversion of 84.6, 26.7, and 15.6 kg mol-1, respectively. The final molecular weight via route E2 was most probably constrained by depletion of 1,3-propanediol during precondensation. Rheological measurements of the polyesters in melt revealed a Newtonian-like behavior at 80 °C. The dynamic viscosities fulfill the Cox-Merz rule. The power law for the viscosity as a function of Mw possesses an exponent of 3.7 ± 0.2. A polyesterdiol of Mn ≈ 6 kDa prepared along route M was used in the synthesis of a polyurethane elastomer with a Young modulus of 2.5 MPa, an elongation at break of 554%, an ultimate tensile strength of 3.5 MPa, and a Shore A hardness of 38. Article in Journal/Newspaper Antarc* Antarctica TUHH Open Research (TORE - Technische Universität Hamburg) Merz ENVELOPE(-61.061,-61.061,-72.311,-72.311) Organic Process Research & Development 21 9 1245 1252 |
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TUHH Open Research (TORE - Technische Universität Hamburg) |
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English |
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540: Chemie 620: Ingenieurwissenschaften 620 540 |
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540: Chemie 620: Ingenieurwissenschaften 620 540 Gebhard, Jakob Neuer, Björn Luinstra, Gerrit A. Liese, Andreas Enzyme- and metal-catalyzed synthesis of a new biobased polyester |
topic_facet |
540: Chemie 620: Ingenieurwissenschaften 620 540 |
description |
Linear aliphatic polyesters were prepared from Pripol 1012, a diacidic C18 fatty acid dimer, and 1,3-propanediol employing a lipase or a titanium tetrabutanoate. Metal-based catalysis (route M) was carried out with a precondensation at 180 °C and 600 mbar followed by a final condensation at 220 °C and 0.3-0.6 mbar. Enzyme catalysis was carried out with an immobilized Candida antarctica lipase B after either a precondensation step at 180 °C and 600 mbar (route E1) or 80 °C and 100 mbar (route E2) and a final condensation at 80 °C and 0.3-0.6 mbar. Polyesters were obtained along routes M, E1, and E2 with weight-average molecular weights, Mw, at final conversion of 84.6, 26.7, and 15.6 kg mol-1, respectively. The final molecular weight via route E2 was most probably constrained by depletion of 1,3-propanediol during precondensation. Rheological measurements of the polyesters in melt revealed a Newtonian-like behavior at 80 °C. The dynamic viscosities fulfill the Cox-Merz rule. The power law for the viscosity as a function of Mw possesses an exponent of 3.7 ± 0.2. A polyesterdiol of Mn ≈ 6 kDa prepared along route M was used in the synthesis of a polyurethane elastomer with a Young modulus of 2.5 MPa, an elongation at break of 554%, an ultimate tensile strength of 3.5 MPa, and a Shore A hardness of 38. |
format |
Article in Journal/Newspaper |
author |
Gebhard, Jakob Neuer, Björn Luinstra, Gerrit A. Liese, Andreas |
author_facet |
Gebhard, Jakob Neuer, Björn Luinstra, Gerrit A. Liese, Andreas |
author_sort |
Gebhard, Jakob |
title |
Enzyme- and metal-catalyzed synthesis of a new biobased polyester |
title_short |
Enzyme- and metal-catalyzed synthesis of a new biobased polyester |
title_full |
Enzyme- and metal-catalyzed synthesis of a new biobased polyester |
title_fullStr |
Enzyme- and metal-catalyzed synthesis of a new biobased polyester |
title_full_unstemmed |
Enzyme- and metal-catalyzed synthesis of a new biobased polyester |
title_sort |
enzyme- and metal-catalyzed synthesis of a new biobased polyester |
publisher |
American Chemical Society |
publishDate |
2017 |
url |
http://hdl.handle.net/11420/3165 |
long_lat |
ENVELOPE(-61.061,-61.061,-72.311,-72.311) |
geographic |
Merz |
geographic_facet |
Merz |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Organic process research & development 1083-6160 Organic Process Research and Development 9 (21): 1245-1252 (2017-09-15) http://hdl.handle.net/11420/3165 2-s2.0-85029513898 |
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Organic Process Research & Development |
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21 |
container_issue |
9 |
container_start_page |
1245 |
op_container_end_page |
1252 |
_version_ |
1774712820377583616 |