Poly(para-dioxanone) and poly(l-lactic acid) blends: Thermal, mechanical, and morphological properties

dc.creatorPezzin, APT
dc.creatorvan Ekenstein, GORA
dc.creatorZavaglia, CAC
dc.creatorten Brinke, G
dc.creatorDeuk, EAR
dc.date2003
dc.date43983
dc.date2014-11-14T12:28:48Z
dc.date2015-11-26T17:15:00Z
dc.date2014-11-14T12:28:48Z
dc.date2015-11-26T17:15:00Z
dc.date.accessioned2018-03-29T00:03:14Z
dc.date.available2018-03-29T00:03:14Z
dc.identifierJournal Of Applied Polymer Science. John Wiley & Sons Inc, v. 88, n. 12, n. 2744, n. 2755, 2003.
dc.identifier0021-8995
dc.identifierWOS:000182038300005
dc.identifier10.1002/app.11984
dc.identifierhttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/81400
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/81400
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/81400
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1281934
dc.descriptionBlends of two semicrystalline polymers, poly(L-lactic acid) (PLLA) and poly-p-dioxanone (PPD) have been prepared by solvent casting in different compositions. Thermal, morphological, and mechanical properties of the blends were studied using modulated differential scanning calorimetry, wide-angle X-ray diffractometry, scanning electron microscopy (SEM), polarizing light microscopy (PLM), and tensile tests. Thermal analysis showed two glass transition temperatures nearly constant and equal to the values of the homopolymers and constant values of melting temperature (T-m) for all blend compositions, suggesting that both polymers are immiscible. The PLM and SEM observations validated these results, and showed the different morphology obtained by changing the composition of the blend. The blends 40/60, 50/50, and 60/40 presented a clearly macroseparated system, while the 20/80 and 80/20 blends presented better homogeneity, probably due to the low amount of one component in the other. It was found by PLM that PPD is able to crystallize according to a spherulitic morphology when its content is above 40%. Under this content, the crystallization of PPD is hardly observed. The blend 20/80 is more flexible, and tough material and neck formation during elongation is also observed, due to PPD, which may act as a plasticizer. (C) 2003 Wiley Periodicals, Inc.
dc.description88
dc.description12
dc.description2744
dc.description2755
dc.languageen
dc.publisherJohn Wiley & Sons Inc
dc.publisherHoboken
dc.publisherEUA
dc.relationJournal Of Applied Polymer Science
dc.relationJ. Appl. Polym. Sci.
dc.rightsfechado
dc.rightshttp://olabout.wiley.com/WileyCDA/Section/id-406071.html
dc.sourceWeb of Science
dc.subjectbiomaterials
dc.subjectbioreabsorbable polymers
dc.subjectblends
dc.subjectpoly(lactic acid)
dc.subjectpoly(p-dioxanone)
dc.subjectEnantiomeric Poly(lactic Acid)s
dc.subjectStereocomplex Formation
dc.subjectPhysical-properties
dc.subjectAcetonitrile Solution
dc.subjectAliphatic Polyesters
dc.subjectPoly(d-lactic Acid)
dc.subjectBinary Blends
dc.subjectCrystallization
dc.subjectMiscibility
dc.subjectMelt
dc.titlePoly(para-dioxanone) and poly(l-lactic acid) blends: Thermal, mechanical, and morphological properties
dc.typeArtículos de revistas


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