In vitro study of poly(lactic acid) pin degradation

dc.creatorDuek, EAR
dc.creatorZavaglia, CAC
dc.creatorBelangero, WD
dc.date1999
dc.dateNOV
dc.date2014-12-02T16:27:11Z
dc.date2015-11-26T17:53:13Z
dc.date2014-12-02T16:27:11Z
dc.date2015-11-26T17:53:13Z
dc.date.accessioned2018-03-29T00:36:47Z
dc.date.available2018-03-29T00:36:47Z
dc.identifierPolymer. Elsevier Sci Ltd, v. 40, n. 23, n. 6465, n. 6473, 1999.
dc.identifier0032-3861
dc.identifierWOS:000082132800023
dc.identifier10.1016/S0032-3861(98)00846-5
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/69416
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/69416
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/69416
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1290465
dc.descriptionAn evaluation was made of pins of poly(lactic acid), an absorbable polymer, produced both with very little crystallinity (PLLA-A) and with extensive crystallinity (PLLA-C). These polymer pins were submitted to in vitro tests to evaluate the effects of degradation on mechanical, thermal, and structural properties, as well as molar mass variation. The pins were molded and immersed in a phosphate buffer solution (pH = 7.4) for 6 months. The results showed pins with greater crystallinity lost their mechanical properties more quickly, although an increase in the degree of crystallinity for both types of pins was observed over time. Structural analyses showed both superficial and internal erosion after two months of degradation. The greater retention of mechanical properties of the less-crystalline PLLA-A should prove useful in the production of implants where the stimulation of osteosynthesis is desired. (C) 1999 Elsevier Science Ltd. All rights reserved.
dc.description40
dc.description23
dc.description6465
dc.description6473
dc.languageen
dc.publisherElsevier Sci Ltd
dc.publisherOxford
dc.publisherInglaterra
dc.relationPolymer
dc.relationPolymer
dc.rightsfechado
dc.rightshttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dc.sourceWeb of Science
dc.subjectpoly(lactic acid)
dc.subjectpins
dc.subjectbiodegradation
dc.subjectMassive Poly(alpha-hydroxy Acids)
dc.subjectStructure-property Relationships
dc.subjectIn-vivo Degradation
dc.subjectPoly(l-lactic Acid)
dc.subjectAqueous-media
dc.subjectMorphology
dc.subjectInvivo
dc.subjectPolylactides
dc.subjectFixation
dc.subjectPolymers
dc.titleIn vitro study of poly(lactic acid) pin degradation
dc.typeArtículos de revistas


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