| Electrospinning of poly(lactic acid) stereocomplex nanofibers. | |
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MedLine Citation:
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PMID: 17154458 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The electrospinning of stereocomplex nanofibers of high-molecular-weight poly(L-lactic acid) (PLLA)/poly(D-lactic acid) (PDLA) (PLLA/PDLA = 1:1) was carried out with chloroform as the spinning solvent. The stereocomplex nanofibers with diameters of 830-1400 and 400-970 nm were successfully obtained at voltages of -12 and -25 kV, respectively. Wide-angle X-ray scattering indicated that with an increasing absolute value of voltage from 0 to 25 kV the crystallinity of homo-crystallites composed of either PLLA or PDLA decreased from 5% to 1%, whereas the crystallinity of stereocomplex crystallites increased slightly from 16% to 20%. The obtained results reveal that electrospinning is an effective method to prepare stereocomplex nanofibers with a negligibly small amount of homo-crystallites, even when high-molecular-weight PLLA and PDLA are used, and that the orientation caused by high voltage (or electrically induced high shearing force) during electrospinning enhances the formation and growth of stereocomplex crystallites and suppresses the formation of homo-crystallites. |
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Authors:
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Hideto Tsuji; Michihiko Nakano; Makoto Hashimoto; Kazunori Takashima; Shinji Katsura; Akira Mizuno |
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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: 7 ISSN: 1525-7797 ISO Abbreviation: Biomacromolecules Publication Date: 2006 Dec |
Date Detail:
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Created Date: 2006-12-12 Completed Date: 2007-02-20 Revised Date: - |
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: 3316-20 Citation Subset: IM |
Affiliation:
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Department of Ecological Engineering, Faculty of Engineering, Toyohashi University of Technology, Toyohashi, Aichi 441-8580, Japan. tsuji@eco.tut.ac.jp |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Calorimetry, Differential Scanning
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methods Electrochemistry / methods Lactic Acid / chemical synthesis, chemistry* Microscopy, Electron, Scanning Models, Molecular Molecular Conformation Molecular Weight Nanostructures / chemistry* Polymers / chemical synthesis, chemistry* Solvents |
| Chemical | |
Reg. No./Substance:
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0/Polymers; 0/Solvents; 26100-51-6/poly(lactic acid); 50-21-5/Lactic Acid |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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