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Effect of pH on the Behavior of a Random Copolymer of Acrylamide.

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Název: Effect of pH on the Behavior of a Random Copolymer of Acrylamide.
Autoři: Zakharova, N. V.1 na_zar@inbox.ru, Simonova, M. A.1, Khairullin, A. R.1, Filippov, A. P.1, Danilovtseva, E. N.2, Zelinskii, S. N.2, Annenkov, V. V.2
Zdroj: Polymer Science -- Series A. Mar2018, Vol. 60 Issue 2, p127-133. 7p.
Témata: *ACRYLAMIDE analysis, *RANDOM copolymers, *METHYL acrylate, *METHOXYCARBONYL compounds, *MACROMOLECULES
Abstrakt: A temperature- and pH-sensitive random copolymer of N-[3-(diethylamino)propyl]-N-methylacrylamide] and N,N-diethylacrylamide was obtained. The copolymer contained 20 mol % of amine units and had a molecular weight of 3.3 × 104. Buffer solutions containing 0.0102 g/cm3 of the synthesized copolymer were studied in the pH range of 7-13.5 by light scattering and turbidimetry. At low temperatures, macromolecules and large aggregates coexist in the solutions. The copolymer is temperature- and pH-sensitive in the studied pH range. The temperature and the width of the phase separation interval increase with increasing acidity of the medium. [ABSTRACT FROM AUTHOR]
Databáze: Academic Search Index
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Abstrakt:A temperature- and pH-sensitive random copolymer of <italic>N</italic>-[3-(diethylamino)propyl]-<italic>N</italic>-methylacrylamide] and <italic>N</italic>,<italic>N</italic>-diethylacrylamide was obtained. The copolymer contained 20 mol % of amine units and had a molecular weight of 3.3 × 104. Buffer solutions containing 0.0102 g/cm3 of the synthesized copolymer were studied in the pH range of 7-13.5 by light scattering and turbidimetry. At low temperatures, macromolecules and large aggregates coexist in the solutions. The copolymer is temperature- and pH-sensitive in the studied pH range. The temperature and the width of the phase separation interval increase with increasing acidity of the medium. [ABSTRACT FROM AUTHOR]
ISSN:0965545X
DOI:10.1134/S0965545X18020153