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A New Apparatus for the Characterization of the Swelling Behavior of Micro‐Gel Particles
Author(s) -
Selic E.,
Borchard W.
Publication year - 2001
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/1521-3935(20010201)202:4<516::aid-macp516>3.0.co;2-a
Subject(s) - swelling , gravimetric analysis , diffusion , characterization (materials science) , chemical engineering , volume (thermodynamics) , polymer chemistry , materials science , composite material , chemistry , nanotechnology , thermodynamics , organic chemistry , physics , engineering
A new apparatus is described allowing the determination of the volume degree of swelling of micro‐particles as a function of time by on‐line detection. The tested superabsorbent materials show anomalous diffusion and may be characterized by the rate of swelling and their maximum swelling capacity. The effect of external pressure and different solvents on the swelling of the micro‐particles is discussed. The developed volumetric method is compared with a gravimetric one.