Thermodynamic features of gelation in concentrated solutions of methyl cellulose

被引：0

作者：

Kalyuzhnaya, LM ^{[1
]}

Bochek, AM ^{[1
]}

Petropavlovskii, GA ^{[1
]}

Frenkel, SY ^{[1
]}

机构：

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

来源：

RUSSIAN JOURNAL OF APPLIED CHEMISTRY | 2000年 / 73卷 / 09期

关键词：

Cellulose; -; Enthalpy; Entropy;

D O I：

暂无

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Thermodynamic features of gelation of methyl cellulose in concentrated solutions in water and dimethylacetamide were studied hy the sorption method over the temperature range 10-120 degreesC. The phase diagrams of solutions were plotted, and the temperature and concentration dependences of the sorption enthalpy and entropy were determined. The Flory-Huggins polymer-solvent interaction parameter and its entropy anti enthalpy constituents were determined. A mechanism of formation of new phases in the systems studied due to changes in the polymer-solvent interaction parameter and its constituents was inferred.

引用

页码：1604 / 1608

页数：5

共 9 条

[1] [Anonymous], 1988, GIDROFILNYE CHASTICH
[2] BARTENEV GM, 1976, KURS FIZIKA POLIMERO
[3] Bochek A. M., 1996, ZH PRIKL KHIM, V69, P1363
[4] Bochek AM, 1995, CELL CHEM TECHNOL, V29, P567
[5] BOCHEK AM, 1996, 2 INT S MOL MOB ORD, P41
[6] FLORY PJ, 1976, DISCUSS FARADAY SOC, V49, P7
[7] Samsonov G.V., 1969, Ion Exchange. Sorption of Organic Substances
[8] THERMODYNAMICS OF MIXTURES OF POLY(TETRAMETHYLENE OXIDE)S AND 1,4-DIOXANE
SHARMA, SC
LAKHANPAL, ML
[J]. JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS, 1983, 21 (03) : 353 - 365
[9] Tager A. A., 1993, OSNOVY UCHENIYA RAST

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