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:
Attempts have been made to follow the process of consolidation, during drying, of the structure of a paper coating based on clay and latex by the electron microscope observation, and the analysis of coatings quenched by freezing at various stages and freeze-dried. Three phases are considered, separated by two critical concentrations. At the first critical concentration (FCC), a 3-dimensional network is formed, and particle motion is greatly restricted. The water-air interface recedes into the surface capillaries, creating a capillary pressure that causes a shrinkage of the 3-dimensional network until a second critical concentration (SCC) is reached at which the network is fixed and air enters the rigid structure. Latex stiffness and colloidal interactions influence the critical concentrations. The latex coalescence process has been observed to take place over a relatively narrow concentration range after the FCC and is completed at the SCC.
Additional Material:
12 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/app.1982.070271112
