End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization
Poly(ε-caprolactone) (PCL) macromonomers comprising acrylate end-functionality were synthesized via enzymatic ring-opening polymerization (eROP) by utilizing commercially available Candida antarctica Lipase B (CALB), Novozyme-435. 2-Hydroxyethyl methacrylate (HEMA) was purposed to be the nucleophili...
Published in: | International Journal of Polymer Science |
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ftvttcrispub:oai:cris.vtt.fi:publications/b0719d5d-6063-4ac6-8758-323855eeb34b 2023-05-15T13:58:39+02:00 End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization Kaya, N. Ugur Guvenilir, Y. Avcibasi 2015 https://cris.vtt.fi/en/publications/b0719d5d-6063-4ac6-8758-323855eeb34b https://doi.org/10.1155/2015/458756 http://www.scopus.com/inward/record.url?scp=84930643861&partnerID=8YFLogxK eng eng info:eu-repo/semantics/openAccess Kaya , N U & Guvenilir , Y A 2015 , ' End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization ' , International Journal of Polymer Science , vol. 2015 , 458756 . https://doi.org/10.1155/2015/458756 article 2015 ftvttcrispub https://doi.org/10.1155/2015/458756 2022-10-13T14:13:47Z Poly(ε-caprolactone) (PCL) macromonomers comprising acrylate end-functionality were synthesized via enzymatic ring-opening polymerization (eROP) by utilizing commercially available Candida antarctica Lipase B (CALB), Novozyme-435. 2-Hydroxyethyl methacrylate (HEMA) was purposed to be the nucleophilic initiator in eROP. The side reactions generated due to the cleavage of ester bonds in HEMA and the growing polymer chains were investigated through altering polymerization period, initiator concentration, temperature, and enzyme concentration. 1 H NMR evaluations showed that minimum quantities of side reactions were in lower temperatures, initiator concentration, enzyme concentration, and lower monomer conversions. Gel permeation chromatography (GPC) results revealed that lower polydispersity along with number-Average molecular weight of end-functionalized PCL macromonomers was obtained depending on higher initiator/monomer ratios, lower temperature (60°C), enzyme concentration (100 mg), and/or polymerization time (2 h). Furthermore, 0.1 HEMA/ε-caprolactone (CL) ratio had higher molecular weight than 0.5 HEMA/CL ratio, while keeping a close value of methacrylate transfer, total methacrylate end-groups, and lower polyester transfer. Article in Journal/Newspaper Antarc* Antarctica VTT's Research Information Portal International Journal of Polymer Science 2015 1 9 |
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Open Polar |
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VTT's Research Information Portal |
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ftvttcrispub |
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English |
description |
Poly(ε-caprolactone) (PCL) macromonomers comprising acrylate end-functionality were synthesized via enzymatic ring-opening polymerization (eROP) by utilizing commercially available Candida antarctica Lipase B (CALB), Novozyme-435. 2-Hydroxyethyl methacrylate (HEMA) was purposed to be the nucleophilic initiator in eROP. The side reactions generated due to the cleavage of ester bonds in HEMA and the growing polymer chains were investigated through altering polymerization period, initiator concentration, temperature, and enzyme concentration. 1 H NMR evaluations showed that minimum quantities of side reactions were in lower temperatures, initiator concentration, enzyme concentration, and lower monomer conversions. Gel permeation chromatography (GPC) results revealed that lower polydispersity along with number-Average molecular weight of end-functionalized PCL macromonomers was obtained depending on higher initiator/monomer ratios, lower temperature (60°C), enzyme concentration (100 mg), and/or polymerization time (2 h). Furthermore, 0.1 HEMA/ε-caprolactone (CL) ratio had higher molecular weight than 0.5 HEMA/CL ratio, while keeping a close value of methacrylate transfer, total methacrylate end-groups, and lower polyester transfer. |
format |
Article in Journal/Newspaper |
author |
Kaya, N. Ugur Guvenilir, Y. Avcibasi |
spellingShingle |
Kaya, N. Ugur Guvenilir, Y. Avcibasi End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
author_facet |
Kaya, N. Ugur Guvenilir, Y. Avcibasi |
author_sort |
Kaya, N. Ugur |
title |
End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
title_short |
End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
title_full |
End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
title_fullStr |
End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
title_full_unstemmed |
End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
title_sort |
end-group evaluation of hema initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization |
publishDate |
2015 |
url |
https://cris.vtt.fi/en/publications/b0719d5d-6063-4ac6-8758-323855eeb34b https://doi.org/10.1155/2015/458756 http://www.scopus.com/inward/record.url?scp=84930643861&partnerID=8YFLogxK |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Kaya , N U & Guvenilir , Y A 2015 , ' End-group evaluation of HEMA initiated poly(ε-caprolactone) macromonomers via enzymatic ring-opening polymerization ' , International Journal of Polymer Science , vol. 2015 , 458756 . https://doi.org/10.1155/2015/458756 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1155/2015/458756 |
container_title |
International Journal of Polymer Science |
container_volume |
2015 |
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1 |
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9 |
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1766267008027983872 |