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Mitić Ž, Stolić A, Stojanović S, Najman S, Ignjatović N, Nikolić G, Trajanović M. Instrumental methods and techniques for structural and physicochemical characterization of biomaterials and bone tissue: A review. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017. [DOI: 10.1016/j.msec.2017.05.127] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Dubey SP, Abhyankar HA, Marchante V, Brighton J, Bergmann B, Trinh G, David C. Microwave energy assisted synthesis of poly lactic acid via continuous reactive extrusion: modelling of reaction kinetics. RSC Adv 2017. [DOI: 10.1039/c6ra26514f] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The most commonly used batch process to manufacture PLA is ring opening polymerization (ROP) of lactide monomer in a suitable solvent, in the presence of a metallic/bimetallic catalyst (Sn, Zn, and Al) or other organic catalysts.
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Affiliation(s)
- Satya P. Dubey
- Advanced Vehicle Engineering Centre (AVEC)
- School of Aerospace
- Transport and Manufacturing (SATM)
- Cranfield University
- MK43 0AL Cranfield
| | - Hrushikesh A. Abhyankar
- Advanced Vehicle Engineering Centre (AVEC)
- School of Aerospace
- Transport and Manufacturing (SATM)
- Cranfield University
- MK43 0AL Cranfield
| | - Veronica Marchante
- Advanced Vehicle Engineering Centre (AVEC)
- School of Aerospace
- Transport and Manufacturing (SATM)
- Cranfield University
- MK43 0AL Cranfield
| | - James L. Brighton
- Advanced Vehicle Engineering Centre (AVEC)
- School of Aerospace
- Transport and Manufacturing (SATM)
- Cranfield University
- MK43 0AL Cranfield
| | | | - Giang Trinh
- Sciences Computers Consultants (SCC)
- 42000 Saint-Étienne
- France
| | - Chantal David
- Sciences Computers Consultants (SCC)
- 42000 Saint-Étienne
- France
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Dubey SP, Abhyankar HA, Marchante V, Brighton JL, Blackburn K, Temple C, Bergmann B, Trinh G, David C. Modelling and Validation of Synthesis of Poly Lactic Acid Using an Alternative Energy Source through a Continuous Reactive Extrusion Process. Polymers (Basel) 2016; 8:polym8040164. [PMID: 30979253 PMCID: PMC6432386 DOI: 10.3390/polym8040164] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 04/12/2016] [Accepted: 04/14/2016] [Indexed: 11/25/2022] Open
Abstract
PLA is one of the most promising bio-compostable and bio-degradable thermoplastic polymers made from renewable sources. PLA is generally produced by ring opening polymerization (ROP) of lactide using the metallic/bimetallic catalyst (Sn, Zn, and Al) or other organic catalysts in a suitable solvent. In this work, reactive extrusion experiments using stannous octoate Sn(Oct)2 and tri-phenyl phosphine (PPh)3 were considered to perform ROP of lactide. Ultrasound energy source was used for activating and/or boosting the polymerization as an alternative energy (AE) source. Ludovic® software, designed for simulation of the extrusion process, had to be modified in order to simulate the reactive extrusion of lactide and for the application of an AE source in an extruder. A mathematical model for the ROP of lactide reaction was developed to estimate the kinetics of the polymerization process. The isothermal curves generated through this model were then used by Ludovic software to simulate the “reactive” extrusion process of ROP of lactide. Results from the experiments and simulations were compared to validate the simulation methodology. It was observed that the application of an AE source boosts the polymerization of lactide monomers. However, it was also observed that the predicted residence time was shorter than the experimental one. There is potentially a case for reducing the residence time distribution (RTD) in Ludovic® due to the ‘liquid’ monomer flow in the extruder. Although this change in parameters resulted in validation of the simulation, it was concluded that further research is needed to validate this assumption.
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Affiliation(s)
- Satya P Dubey
- Advanced Vehicle Engineering Centre (AVEC), School of Aerospace, Transport and Manufacturing (SATM), Cranfield University, MK43 0AL Cranfield, UK.
| | - Hrushikesh A Abhyankar
- Advanced Vehicle Engineering Centre (AVEC), School of Aerospace, Transport and Manufacturing (SATM), Cranfield University, MK43 0AL Cranfield, UK.
| | - Veronica Marchante
- Advanced Vehicle Engineering Centre (AVEC), School of Aerospace, Transport and Manufacturing (SATM), Cranfield University, MK43 0AL Cranfield, UK.
| | - James L Brighton
- Advanced Vehicle Engineering Centre (AVEC), School of Aerospace, Transport and Manufacturing (SATM), Cranfield University, MK43 0AL Cranfield, UK.
| | - Kim Blackburn
- Advanced Vehicle Engineering Centre (AVEC), School of Aerospace, Transport and Manufacturing (SATM), Cranfield University, MK43 0AL Cranfield, UK.
| | - Clive Temple
- Advanced Vehicle Engineering Centre (AVEC), School of Aerospace, Transport and Manufacturing (SATM), Cranfield University, MK43 0AL Cranfield, UK.
| | - Björn Bergmann
- Polymer Engineering, Fraunhofer.-ICT, Joseph-von-Fraunhofer-Straße 7, 76327 Pfinztal, Germany.
| | - Giang Trinh
- Sciences Computers Consultants (SCC), 10 Rue du Plateau des Glières, 42000 Saint-Étienne, France.
| | - Chantal David
- Sciences Computers Consultants (SCC), 10 Rue du Plateau des Glières, 42000 Saint-Étienne, France.
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Poly(d,l-lactide-co-glycolide)/hydroxyapatite core–shell nanospheres. Part 4: A change of the surface properties during degradation process and the corresponding in vitro cellular response. Colloids Surf B Biointerfaces 2012; 91:144-53. [DOI: 10.1016/j.colsurfb.2011.10.049] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2011] [Revised: 09/12/2011] [Accepted: 10/27/2011] [Indexed: 11/20/2022]
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Vukomanović M, Škapin SD, Poljanšek I, Žagar E, Kralj B, Ignjatović N, Uskoković D. Poly(D,L-lactide-co-glycolide)/hydroxyapatite core–shell nanosphere. Part 2: Simultaneous release of a drug and a prodrug (clindamycin and clindamycin phosphate). Colloids Surf B Biointerfaces 2011; 82:414-21. [DOI: 10.1016/j.colsurfb.2010.09.012] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2010] [Revised: 09/15/2010] [Accepted: 09/15/2010] [Indexed: 10/19/2022]
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Uskoković V, Uskoković DP. Nanosized hydroxyapatite and other calcium phosphates: Chemistry of formation and application as drug and gene delivery agents. J Biomed Mater Res B Appl Biomater 2010; 96:152-91. [DOI: 10.1002/jbm.b.31746] [Citation(s) in RCA: 389] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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