Состояние поверхности анионообменных мембран МА-40 и МА-41, сорбировавших пектин

Vladimir V. Kotov; Margarita V. Grechkina; Olga V. Peregonchaya; Alexander N. Zyablov

Vladimir V. Kotov Dr. Sci. in Chemistry, professor of chemistry department Voronezh State Agricultural University, Voronezh.
Margarita V. Grechkina lead engineer of Physics of Semiconductors and Microelectronics department Voronezh State University; Voronezh
Olga V. Peregonchaya Ph. D. in Chemistry, associate professor of chemistry department Voronezh State Agricultural University, Voronezh, e-mail: ovp177@yandex.ru
Alexander N. Zyablov Dr. Sci. in Chemistry, assistant professor Chair of Analytical Chemistry Voronezh State University; Voronezh

Keywords: membrane, pectin, surface, sorption, histogram, hydrophilic and hydrophobic matrix.

Abstract

This article is devoted to the influence of pectin's sorption on the surface of anion-exchange membranes' MA-40 and MA-41 condition during the electrodialysis of pectin-containing solutions. The surface's condition of the initial membrane and of the membrane sorbing pectin was researched by the method of scanning-force microscopy. The sorption of pectin by membranes causes a change in the uniformity of their surface. The membrane MA-40 has a more hydrophilic ion-exchange matrix containing secondary and tertiary nitrogen atoms. Therefore, it exhibits an increased affinity for molecules of pectin, which leads to the formation of a more uniform surface in the sorption process. The sorption of pectin on the less hydrophilic membrane MA-41 containing quaternary nitrogen atoms, on the contrary, reduces the uniformity of the surface. Thus, the observed changes of the state of the surface of anion-exchange membranes MA-40 and MA-41 after sorption of pectin are related to their different chemical nature.

Downloads

Download data is not yet available.

References

1.Sata T., Kolloid Z. and Z. Polimer, 1972, Vol. 250, No 10, рр. 980-982.
2.Sata T., J. Colloid Interface Sci., 1973, Vol. 44, No 3, рр. 393-406.
3.Kotov V.V., Peregonchaja O.V., Bodjakina I.M., Jelektrodializ vodnyh rastvorov, soderzhashhih organicheskie jelektrolity, Saarbrucken, LAP, 2014, 97 p.
4.Tanaka Y., J. Membr. Sci., 1981, Vol. 8, No 2, рр.115-127.
5.Kotov V.V., Peregonchaja O.V., Tkachenko S.V., Nikulin S.S., Sorbtsionnye i khromatograficheskie protsessy, 2002, Vol. 2, No1, pp. 54-63.
6.Donchenko L.V. Tehnologija pektinov i pektinoproduktov, M., DeLi, 2000, 256 p.
7.Netesova G.A., Kotov V.V., Bodjakina I.M., Lukin A.L., Zhurnal fizicheskoj himii, 2012, Vol.. 86, No 9, pp. 1569-1572.
8.Saldadze K.M., Pashkov A.V., Titov V.S. Ionoobmennye vysokomolekuljarnye soedinenija. M., Goshimizdat, 1960, 356 p.
9.Skanirujushhaja zondovaja mikroskopija biopolimerov / Pod red. I.V. Jaminskogo. M., Nauchnyj mir, 1997, 88 ps.
10.Scanning Probe Microscopy Software “FemtoScan Online”. – Moscow.: Advanced Technologies Center, www.Nanoscopy.net.
11.Vasil'eva V.I. et al., Sorbtsionnye i khromatograficheskie protsessy, 2008, Vol. 8, No 2, pp. 260-271.
12.Sokolova S.A., D'yakonova O.V., Zyablov A.N., Sorbtsionnye i khromatograficheskie protsessy, 2009, Vol. 9, No 6, pp. 893-903.

The structure of the surface of anion-exchange membranes MA-40 and MA-41 after sorption of pectin

Abstract

Downloads

References