LOGO Polylactic acid structure properties synthesis and application

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

Purposes of presentation v Modern data of PLA synthesis v Unusual properties of PLA v Perspectives of application of PLA 2

What is the main ecological problem ? It is destructed during thousand years Oil and gas Industrial wastes Dirty Planet 3

What is PLA? Biodegradable Biocompatible Thermoplastic Aliphatic polyether 4

How to obtain PLA? enzyme hydrolysis dextrose - H 2 O fermentation starch microbiological process lactic acid - H 2 O 5

Lactid polymerization rin gf PLA High Molecular Weight -H 2 O orm atio n PLA Low Molecular Weight 6

PLA as packaging materials PLA holds temperatures from -40 °C to 250 °C 7

PLA as fibers Gattinoni Wedding Dress made from PLA fibers 8

PLA as the solid substrate 9

PLA as implant materials 10

PLA as an engineering plastics 11

Biodegradation of PLA: In the composting plant, a cup is completely decomposed by microorganisms within about 5 weeks (Source: Nature. Works LLC) 12

Biodegradation is a complex process The main factors of biodegradation: air, water, day light, temperature, microorganisms Microorganisms co ic rob e Ana Aer o bic Waste con ion ndit ditio ns s CH 4 + H 2 S + NH 3 CO 4 + H 2 O + NO 2 The main products of biodegradation: carbon dioxide, methane, water 13

Conclusion PLA is a new alternative for consumption 14