| Molecular weight characterization of virgin and explanted polyester arterial prostheses. | |
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MedLine Citation:
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PMID: 6242474 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The macromolecular properties of 17 virgin commercial arterial prostheses and a series of explanted prostheses, both manufactured from poly(ethylene terephthalate) (PET) yarns, have been studied by gel permeation chromatography (GPC) and by differential scanning calorimetry (DSC). Only small differences were found between the average molecular weights and the degree of crystallinity of the unused reference grafts. A broadening of the DSC curves was observed for the prostheses containing texturized yarns compared with those made solely from flat, untexturized yarns. This broadening may be due to greater heterogeneity of the crystal sizes caused by the texturizing process and to the use of two or more different yarns with dissimilar thermal histories in the same prosthesis. Average molecular weights of the explant series were significantly lower than those of the corresponding reference grafts but almost time independent. The polydispersity index and the degree of crystallinity of the explants remained constant as a function of time. These results are discussed in regard to others available in the literature. |
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Authors:
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J M Maarek; R Guidoin; M Aubin; R E Prud'homme |
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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: Journal of biomedical materials research Volume: 18 ISSN: 0021-9304 ISO Abbreviation: J. Biomed. Mater. Res. Publication Date: 1984 Oct |
Date Detail:
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Created Date: 1985-12-30 Completed Date: 1985-12-30 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 0112726 Medline TA: J Biomed Mater Res Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 881-94 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adult Aged Arteries Blood Vessel Prosthesis* Calorimetry, Differential Scanning Chromatography, Gel Crystallization Female Humans Male Middle Aged Molecular Weight Polyesters* Polyethylene Terephthalates Time Factors |
| Chemical | |
Reg. No./Substance:
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0/Polyesters; 0/Polyethylene Terephthalates |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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