ISSN:
0021-8995
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
,
Physics
Notes:
The water sorption behavior of styrene-methacrylic acid copolymers and of their sodium salts has been studied as a function of concentration of ionic groups and nature of the sample. The influence of thermal history has also been examined. The salt forms of the copolymers were found to have a greater hydration capacity than the acids, the hydration capacity increasing with ion content for the salts. The hydration energy of the acid forms was found to be in the vicinity of the liquefaction energy of water whereas the energy for the salt forms became much lower than that value, with increasing water content. This decrease in energy has been attributed to a rearrangement of the cluster structure to accommodate more water molecules.
Additional Material:
16 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1984.070290420
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