structure, properties, synthesis and application Polylactic acid: structure, properties, synthesis and application Tatyana N. Volgina Department of Technology of basic organic synthesis and high-molecular compounds

Purposes of presentation Modern data of PLA synthesis Unusual properties of PLA Perspectives of application of PLA

What is the main ecological problem ? It is destructed during thousand years Oil and gas Dirty Planet Industrial wastes

What is PLA? Biodegradable Biocompatible Thermoplastic Aliphatic polyether

How to obtain PLA? - H2O enzyme hydrolysis dextrose fermentation starch enzyme hydrolysis - H2O lactic acid microbiological process fermentation dextrose

Lactid polymerization ring formation -H2O PLA Low Molecular Weight PLA High Molecular Weight

PLA as packaging materials PLA holds temperatures from -40 °C to 250 °C

Gattinoni Wedding Dress made from PLA fibers PLA as fibers Gattinoni Wedding Dress made from PLA fibers

PLA as the solid substrate

PLA as implant materials

PLA as an engineering plastics

Biodegradation of PLA: In the composting plant, a cup is completely decomposed by microorganisms within about 5 weeks (Source: NatureWorks LLC)

Biodegradation is a complex process The main factors of biodegradation: air, water, day light, temperature, microorganisms Aerobic conditions Waste Microorganisms CH4 + H2S + NH3 Anaerobic conditions CO4 + H2O + NO2 The main products of biodegradation: carbon dioxide, methane, water

PLA is a new alternative for consumption Conclusion PLA is a new alternative for consumption