| Preparation of aliphatic poly(thioester) by the lipase-catalyzed direct polycondensation of 11-mercaptoundecanoic acid. | |
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MedLine Citation:
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PMID: 16004472 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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An aliphatic polythioester was enzymatically prepared by the direct polycondensation of mercaptoalkanoic acid using immobilized lipase of Candida antarctica (lipase CA) in bulk. The commercially available 11-mercaptoundecanoic acid was polymerized by lipase CA in bulk in the presence of molecular sieves 4A as a water absorbent at 110 degrees C for 48 h to produce poly(11-mercaptoundecanoate) with an M(w) of 34 000 in high yield. The 104.5 degrees C melting temperature (T(m)) of poly(11-mercaptoundecanoate) was about 20 degrees C higher than that of the corresponding polyoxyester, poly(11-hydroxyundecanoate). The polythioester was readily transformed by lipase into the corresponding cyclic oligomers mainly consisting of the dimer, which were readily repolymerized by the ring-opening polymerization using lipase as a sustainable chemical recycling. |
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Authors:
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Makoto Kato; Kazunobu Toshima; Shuichi Matsumura |
Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Biomacromolecules Volume: 6 ISSN: 1525-7797 ISO Abbreviation: Biomacromolecules Publication Date: 2005 Jul-Aug |
Date Detail:
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Created Date: 2005-07-11 Completed Date: 2005-11-14 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 100892849 Medline TA: Biomacromolecules Country: United States |
Other Details:
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Languages: eng Pagination: 2275-80 Citation Subset: IM |
Affiliation:
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Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku-ku, Yokohama 223-8522, Japan. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Candida
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enzymology Catalysis Fatty Acids / chemistry* Lipase / chemistry* Magnetic Resonance Spectroscopy Molecular Structure Polyesters / chemistry Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization Sulfhydryl Compounds / chemistry* |
| Chemical | |
Reg. No./Substance:
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0/11-mercaptoundecanoic acid; 0/Fatty Acids; 0/Polyesters; 0/Sulfhydryl Compounds; EC 3.1.1.3/Lipase |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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