Influence of Processing Conditions on the Mechanical Behavior and Morphology of Injection Molded Poly(lactic-co-glycolic acid) 85:15
Joint Authors
Melo, Liliane Pimenta de
Salmoria, Gean Vitor
Fancello, Eduardo Alberto
Roesler, Carlos Rodrigo de Mello
Source
International Journal of Biomaterials
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-08-07
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Abstract EN
Two groups of PLGA specimens with different geometries (notched and unnotched) were injection molded under two melting temperatures and flow rates.
The mechanical properties, morphology at the fracture surface, and residual stresses were evaluated for both processing conditions.
The morphology of the fractured surfaces for both specimens showed brittle and smooth fracture features for the majority of the specimens.
Fracture images of the notched specimens suggest that the surface failure mechanisms are different from the core failure.
Polarized light techniques indicated birefringence in all specimens, especially those molded with lower temperature, which suggests residual stress due to rapid solidification.
DSC analysis confirmed the existence of residual stress in all PLGA specimens.
The specimens molded using the lower injection temperature and the low flow rate presented lower loss tangent values according to the DMA and higher residual stress as shown by DSC, and the photoelastic analysis showed extensive birefringence.
American Psychological Association (APA)
Melo, Liliane Pimenta de& Salmoria, Gean Vitor& Fancello, Eduardo Alberto& Roesler, Carlos Rodrigo de Mello. 2017. Influence of Processing Conditions on the Mechanical Behavior and Morphology of Injection Molded Poly(lactic-co-glycolic acid) 85:15. International Journal of Biomaterials،Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1160085
Modern Language Association (MLA)
Melo, Liliane Pimenta de…[et al.]. Influence of Processing Conditions on the Mechanical Behavior and Morphology of Injection Molded Poly(lactic-co-glycolic acid) 85:15. International Journal of Biomaterials No. 2017 (2017), pp.1-8.
https://search.emarefa.net/detail/BIM-1160085
American Medical Association (AMA)
Melo, Liliane Pimenta de& Salmoria, Gean Vitor& Fancello, Eduardo Alberto& Roesler, Carlos Rodrigo de Mello. Influence of Processing Conditions on the Mechanical Behavior and Morphology of Injection Molded Poly(lactic-co-glycolic acid) 85:15. International Journal of Biomaterials. 2017. Vol. 2017, no. 2017, pp.1-8.
https://search.emarefa.net/detail/BIM-1160085
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1160085