Lipase B from Candida antartica : applications to industrial polyester synthesis. ...
In the early 1990s, enzymatic polymerization studies on an unactivated adipic acid (A) / butane-1,4-diol (B) system in anhydrous organic media suggested that in solvent-free conditions a step-growth mechanism operates involving the effective sequential addition of an 'AB' unit. Subsequent...
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ftdatacite:10.17638/03175458 2023-12-03T10:13:37+01:00 Lipase B from Candida antartica : applications to industrial polyester synthesis. ... Harffey, Paul. 2023 https://dx.doi.org/10.17638/03175458 https://livrepository.liverpool.ac.uk/id/eprint/3175458 unknown University of Liverpool Repository ScholarlyArticle Text article-journal Thesis 2023 ftdatacite https://doi.org/10.17638/03175458 2023-11-03T11:01:20Z In the early 1990s, enzymatic polymerization studies on an unactivated adipic acid (A) / butane-1,4-diol (B) system in anhydrous organic media suggested that in solvent-free conditions a step-growth mechanism operates involving the effective sequential addition of an 'AB' unit. Subsequent optimisation work led to development of an efficient solvent-free process using lipase B from Candida antarctica as catalyst at temperatures of around 60°C, producing polyesters with unique properties compared to their counterparts synthesised using conventional high temperature processes. The present work describes the synthesis and unambiguous characterisation by GPC of a series of key oligomers formed during the enzymatic process, enabling a clearer understanding of the polymer assembly route. Use of semi-quantitative methods to compare the reactivity of these oligomeric species along the proposed enzymatic reaction pathway further clarifies the polymerisation mechanism and explains the differences between the final ... Thesis Antarc* Antarctica antartic* DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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In the early 1990s, enzymatic polymerization studies on an unactivated adipic acid (A) / butane-1,4-diol (B) system in anhydrous organic media suggested that in solvent-free conditions a step-growth mechanism operates involving the effective sequential addition of an 'AB' unit. Subsequent optimisation work led to development of an efficient solvent-free process using lipase B from Candida antarctica as catalyst at temperatures of around 60°C, producing polyesters with unique properties compared to their counterparts synthesised using conventional high temperature processes. The present work describes the synthesis and unambiguous characterisation by GPC of a series of key oligomers formed during the enzymatic process, enabling a clearer understanding of the polymer assembly route. Use of semi-quantitative methods to compare the reactivity of these oligomeric species along the proposed enzymatic reaction pathway further clarifies the polymerisation mechanism and explains the differences between the final ... |
format |
Thesis |
author |
Harffey, Paul. |
spellingShingle |
Harffey, Paul. Lipase B from Candida antartica : applications to industrial polyester synthesis. ... |
author_facet |
Harffey, Paul. |
author_sort |
Harffey, Paul. |
title |
Lipase B from Candida antartica : applications to industrial polyester synthesis. ... |
title_short |
Lipase B from Candida antartica : applications to industrial polyester synthesis. ... |
title_full |
Lipase B from Candida antartica : applications to industrial polyester synthesis. ... |
title_fullStr |
Lipase B from Candida antartica : applications to industrial polyester synthesis. ... |
title_full_unstemmed |
Lipase B from Candida antartica : applications to industrial polyester synthesis. ... |
title_sort |
lipase b from candida antartica : applications to industrial polyester synthesis. ... |
publisher |
University of Liverpool Repository |
publishDate |
2023 |
url |
https://dx.doi.org/10.17638/03175458 https://livrepository.liverpool.ac.uk/id/eprint/3175458 |
genre |
Antarc* Antarctica antartic* |
genre_facet |
Antarc* Antarctica antartic* |
op_doi |
https://doi.org/10.17638/03175458 |
_version_ |
1784260451338551296 |