Rogovina S.Z., Aleksanyan K.V., Grachev A.V., Gorenberg A.Ya., Berlin A.A., Prut E.V. Investigation of Structure and Properties of Biodegradable Compositions of Polylactide with Ethyl Cellulose and Chitosan Plasticized by Poly(Ethylene Glycol)

DOI: http://dx.doi.org/10.15688/jvolsu10.2014.6.7

Rogovina Svetlana Zakharovna

Doctor of Chemical Sciences, Professor,

Leading Researcher,

N. N. Semenov Institute of Chemical Physics, RAS

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Kosygina St., 4, 119991 Moscow, Russian Federation

Aleksanyan Kristine Vladimirovna

Candidate of Chemical Sciences,

Researcher of Laboratory of Physical and Chemical Processes in Polymer Systems,

N. N. Semenov Institute of Chemical Physics, RAS

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Kosygina St., 4, 119991 Moscow, Russian Federation

Grachev Andrey Vladimirovich

Engineer,

N. N. Semenov Institute of Chemical Physics, RAS

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Kosygina St., 4, 119991 Moscow, Russian Federation

Gorenberg Arkadiy Yakovlevich

Candidate of Physical and Mathematical Sciences,

Researcher of N. N. Semenov Institute of Chemical Physics, RAS

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Kosygina St., 4, 119991 Moscow, Russian Federation

Berlin Aleksandr Aleksandrovich

Academician of RAS, Doctor of Chemical Sciences,

Director of N. N. Semenov Institute of Chemical Physics, RAS

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Kosygina St., 4, 119991 Moscow, Russian Federation

Prut Eduard Veniaminovich

Doctor of Chemical Sciences, Professor,

N.N. Semenov Institute of Chemical Physics, RAS

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Kosygina St., 4, 119991 Moscow, Russian Federation

Аbstract. Compositions of polylactide (PLA) with polysaccharides ethyl cellulose and chitosan are obtained at different initial ratios of components under conditions of shear deformation in a Brabender mixer. It has been shown that the addition of a given amount of low-molecular poly(ethylene glycol) (PEG) leads to an increase in the elongation of rigid polysaccharide–PLA compositions. The influence of molecular weight and amount of PEG on the thermal behavior of PLA is investigated by DSC method. The biodegradability of films prepared from the blends under investigation is estimated by weight loss after holding in soil and tests on the fungus resistance, and it is shown that the compositions have good biodegradability. The changes in the film morphology after holding in soil revealed by the SEM method additionally confirm that compositions are subjected to biodegradation.

Key words: polylactide, chitosan, shear deformation, low-molecular poly(ethylene glycol), biodegradability.

 

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Investigation of Structure and Properties of Biodegradable Compositions of Polylactide with Ethyl Cellulose and Chitosan Plasticized by Poly(Ethylene Glycol) by Rogovina S.Z., Aleksanyan K.V., Grachev A.V., Gorenberg A.Ya., Berlin A.A., Prut E.V. is licensed under a Creative Commons Attribution 4.0 International License.

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