FIELD: chemistry.
SUBSTANCE: invention relates to water-dispersible biodegradable compositions, which can be formed into films and fibres, namely to filtering element of smoking product, which contains fibres, made of composition, which contains mixture of polylactide (PLA) and water-soluble polymer, where mixture additionally contains reactionable compatibility-providing substance in amount, sufficient for provision of mixture compatibility. Such reaction provision of compatibility of non-mixable mixtures of polymers is carried out in such a way that basic mixture components become covalently bound. In addition, such reaction provision of compatibility can be realised by means of reaction extrusion.
EFFECT: invention relates to application of graft copolymers (PLA-graft water-soluble polymers) to provide compatibility of PLA and water-soluble polymers.
17 cl, 3 tbl, 4 dwg
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