Modelling and validation of synthesis of poly lactic acid using an alternative energy source through a continuous reactive extrusion process

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dc.contributor.authorDubey, Satya P.
dc.contributor.authorAbhyankar, Hrushikesh
dc.contributor.authorMarchante, Veronica
dc.contributor.authorBrighton, James L.
dc.contributor.authorBlackburn, Kim
dc.contributor.authorTemple, Clive
dc.contributor.authorBergmann, Björn
dc.contributor.authorTrinh, Giang
dc.contributor.authorDavid, Chantal
dc.date.accessioned2016-07-27T08:29:09Z
dc.date.available2016-07-27T08:29:09Z
dc.date.issued2016-04-22
dc.description.abstractPLA 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.en_UK
dc.identifier.citationDubey DP, Abhyankar HA, Marchante V, et al., (2016) Modelling and validation of synthesis of poly lactic acid using an alternative energy source through a continuous reactive extrusion process. Polymers, Volume 8, Issue 4, 2016, Article number 164en_UK
dc.identifier.cris5173708
dc.identifier.issn2073-4360
dc.identifier.urihttps://dspace.lib.cranfield.ac.uk/handle/1826/10180
dc.identifier.urihttp://dx.doi.org/10.3390/polym8040164
dc.language.isoenen_UK
dc.publisherMDPIen_UK
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectalternative energyen_UK
dc.subjectbio-degradableen_UK
dc.subjectreactive extrusionen_UK
dc.subjectmetal catalysten_UK
dc.subjectmathematical modellingen_UK
dc.subjectpoly lactic acid (PLA);en_UK
dc.subjectring opening polymerization (ROP)en_UK
dc.titleModelling and validation of synthesis of poly lactic acid using an alternative energy source through a continuous reactive extrusion processen_UK
dc.typeArticleen_UK

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