Swelling-contraction of sodium polyacrylate hydrogels in media with various pH values

被引：26

作者：

Elyashevich, G. K. ^{[1
]}

Bel'nikevich, N. G. ^{[1
]}

Vesnebolotskaya, S. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia

来源：

POLYMER SCIENCE SERIES A | 2009年 / 51卷 / 05期

基金：

俄罗斯基础研究基金会;

关键词：

PHASE-TRANSITION; CELLULOSE; NETWORKS; WATER; GELS;

D O I：

10.1134/S0965545X09050095

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The swelling kinetics of sodium polyacrylate gels has been studied in media with different pH values. The pH dependence of the degree of equilibrium swelling shows a maximum at pH 6. The degree of swelling decreases with an increase in the crosslink density, and this dependence follows an S-shaped pattern for all examined gels. When a gel swollen in media with pH 3-13 is dried in air, its contraction is reversible, while in the case of the gel swollen in acidic media at pH < 3, the process is irreversible owing to the replacement of sodium ions with protons.

引用

页码：550 / 553

页数：4

共 32 条

[1] Swelling-contraction of sodium polyacrylate hydrogels in media with various pH values
G. K. Elyashevich
N. G. Bel’nikevich
S. A. Vesnebolotskaya
Polymer Science Series A, 2009, 51 : 550 - 553
[2] Features of aluminum anodic behavior in media with various pH values in the presence of sodium chloride and glycine
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[3] EFFECT OF pH AND SODIUM PHOSPHATE DIBASIC CONCENTRATION ON THE SWELLING PROPERTIES OF CHITOSAN HYDROGELS
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REVISTA MEXICANA DE INGENIERIA QUIMICA, 2009, 8 (01): : 121 - 126
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[5] Stability of nonivamide and sodium nonivamide acetate in solution at various pH values
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[6] MITOTIC-CYCLE DURATION AT VARIOUS PH VALUES IN NUTRITION MEDIA
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BIOLOGIA, 1985, 40 (05) : 425 - 429
[7] THE INFLUENCE OF SOLVATION ON THE PH VALUES OF ORGANIC-COMPOUNDS IN VARIOUS MEDIA
DYUMAEV, KM
KOROLEV, BA
USPEKHI KHIMII, 1980, 49 (11) : 2065 - 2085
[8] Poly(acrylic acid)-Sodium Alginate Superabsorbent Hydrogels Synthesized by Electron-Beam Irradiation-Part II: Swelling Kinetics and Absorption Behavior in Various Swelling Media
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[9] Expression of sodium/proton antiporter NhaA at various pH values in Escherichia coli
Shijuku, T
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BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS, 2001, 1506 (03): : 212 - 217
[10] DECOMPOSITION MECHANISM OF SODIUM MERTHIOLATE IN AQUEOUS-SOLUTIONS AT VARIOUS PH VALUES
WEINBERG, J
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OLTEANU, M
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