Biodegradable composite material based on the starch-g-vinyl acetate copolymer
https://doi.org/10.35164/0554-2901-2022-7-8-20-22
Abstract
A native potato starch was modififi ed with vinyl acetate by graft polymerization in alkaline medium with pH 10 in the mode of temperature change from 70 to 80°C for 4 hours. The initiator of the process was ammonium persulfate (NH4)2S2O8. The conversion of vinyl acetate was 91,5%. The chemical structure of graft copolymer (Starch:Vinyl acetate) was confifi rmed by IR-spectroscopy. Composite materials of modififi ed starch and triethyl citrate with tensile strength of 24 MPa were obtained. Under natural environmental conditions, materials undergo biodegradation of 96% in 28 days.
About the Authors
A. P. MONINA
National Research Lobachevsky State University of Nizhny Novgorod
Russian Federation
Russian Federation
Nizhny Novgorod
K. V. APRYATINA
National Research Lobachevsky State University of Nizhny Novgorod
Russian Federation
Russian Federation
Nizhny Novgorod
O. N. SMIRNOVA
National Research Lobachevsky State University of Nizhny Novgorod
Russian Federation
Russian Federation
Nizhny Novgorod
L. A. SMIRNOVA
National Research Lobachevsky State University of Nizhny Novgorod
Russian Federation
Russian Federation
Nizhny Novgorod
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Review
For citations:
MONINA A.P., APRYATINA K.V., SMIRNOVA O.N., SMIRNOVA L.A. Biodegradable composite material based on the starch-g-vinyl acetate copolymer. Plasticheskie massy. 2022;(7-8):20-22. (In Russ.) https://doi.org/10.35164/0554-2901-2022-7-8-20-22
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