Download PDFOpen PDF in browserDetermination of Optimal Conditions for Obtaining Polylactic Acid by Microwave-Assisted Direct PolycondensationEasyChair Preprint 612116 pages•Date: July 20, 2021AbstractIntroduction: An alternative to petrochemical polymers is polylactic acid. Objective: To determine the optimal polylactic acid conditions by microwave-assisted direct polycondensation to obtain the highest yield. Materials and methods: 28 lactic acid and 32 PLA studies were compared. Results: Food residues with sweet sorghum juice, Bacillus coagulans and Lactobacillus rhamnosus microorganisms, using Fed-Batch SSF, for 20-40 h, between 30-45oC and pH 5-7. As a synthesis, commercial or fermented lactic acid between 25-50 mmHg under vacuum, SnCl2/p-TsOH at 0.1-0.6% for 15- 45 min with 100-300W at 50-150°C. Conclusions: Several factors influence the performance and type of polymer, such as raw material, type of microorganisms, type of fermentation and pH. Keyphrases: Fermentación, Polylactic acid, biodegradable, microwave radiation, polycondensation
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