FIELD: composite materials.
SUBSTANCE: invention relates to the field of polymer composites. Proposed is a biodegradable polymer composition with antimicrobial properties and a controlled biodegradation period, characterised by containing (% wt.): birch bark extract with a content of betulinol (betulin) C36H60O3 no less than 80% wt. (0.5 to 5.0) as a plant extract, polylactic acid (2.5 to 5.0), starch containing 20% wt. glycerin as a plasticising additive (5 to 20), and polybutylene adipate terephthalate as a biopolymer (the rest up to 100%).
EFFECT: creation of a biodegradable polymer composition with antimicrobial properties and a controlled biodegradation period – a capability of biodegrading after a certain time after disposal, usable as packaging polymer materials for food products, simultaneously providing long-term protection from microbiological spoilage.
5 cl, 1 tbl, 111 ex
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Authors
Dates
2021-08-20—Published
2020-09-22—Filed