2021 (1) 5
https://doi.org/10.15407/polymerj.43.01.035
INVESTIGATION OF THE INFLUENCE OF DOUBLE MODIFICATION OF STARCH AS OF NATURAL POLYMER, ON RHEOLOGICAL CHARACTERISTICS OF COMPOSITIONS AND THEIR FILM-PRODUCTING PROPERTIES
T.V. DMITRIEVA,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
ORCID: 0000-0002-3526-8395
S.K. KRYMOVSKA,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
ORCID: 0000-0002-9723-4633
V.I. BORTNYTSKY,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
ORCID: 0000-0003-4954-6533
G.E. GLIEVA,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine
ORCID: 0000-0002-2916-0257
S.V. RIABOV,
Institute of Macromolecular Chemistry NAS of Ukraine, 48, Kharkivske shose, Kyiv, 02160, Ukraine,
e-mail: sergii.riabov@gmail.com
ORCID: 0000-0003-2996-3794
Polym. J., 2021, 43, no. 1: 35-40.
Section: Structure and properties.
Language: Ukrainian.
Abstract:
The structure of two types of corn starch was studied by pyrolytic mass spectrometry and their characteristic mass spectra were determined. The influence of physical modification by ultrasonic and microwave irradiation of corn starch using plasticizing additives based on modified soybean and rapeseed oils on the rheological properties of the compositions, solubility and swelling was studied. It was found that the modification of starch using ultrasonic irradiation leads to a significant decrease in dynamic viscosity, while after microwave irradiation the viscosity increases. Double-modified corn starch was investigated for the formation of film-forming materials with the addition of NaКMC and polyvinyl alcohol. The strength characteristics of the films of the compositions are determined.
Key words: corn starch, physical modification, plasticizing additives.
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Received 11.11.2020