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Title of Journal: Polym Bull

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Abbravation: Polymer Bulletin

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Springer Berlin Heidelberg

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DOI

10.1002/jctb.5000561880

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1436-2449

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Polylactic acid and poly3hydroxybutyrateco3hy

Authors: Rebeca Bouza María del Mar Castro Sonia DopicoGarcía M Victoria GonzálezRodríguez Luis F Barral Birgit Bittmann
Publish Date: 2016/04/29
Volume: 73, Issue: 12, Pages: 3485-3502
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Abstract

Two methods nanoprecipitation and emulsification/solvent evaporation with different solvents to prepare nano and microparticles of polylactic acid PLA and PHBV are investigated The obtained particles are characterized in terms of morphology by SEM and thermal properties by DSC and TGA The objective is the preparation of PLA and PHBV nano and microparticles with controlled shape and size distribution for their further inclusion into biopolymer matrices such as PLA PHBV or thermoplastic starch matrices The purpose is the use of these biocomposites in the sector of wrapping and packaging Good thermal properties of the nano and microparticles are important to the posterior processing as extrusion film technique Although the smallest particles are obtained for PLA using nanoprecipitation technique with THF as solvent these nanoparticles show a low thermal stability The emulsification technique using dichloromethane as solvent shows to be a good option to obtain for PLA and PHBV spherical particles with controlled size and adequate thermal stability The reproducibility of the selected method is studied for upscaling nano and microparticle production to preindustrial level This study of reproducibility using statistical analysis shows the robustness of the methodologyFinancial support was provided from Ministerio de Economía y Competitividad MAT201341892R Project NanoCompBioPol and Xunta de Galicia Government Autonomous Community Government and FEDER Program of Consolidation and Structuring Competitive Research Units GRC 2014/036

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