ON THE ASSESSMENT OF HYDROGELS FOR FLUID ABSORBENCY

Hydrogels are capable of absorbing fluids like water to the extent of several fold. Since this is an important characteristic property of any hydrogel, it is necessary to employ a simple and accurate method for its assessment. Several methods reported in the literature have been discussed for their scope as well as limitations. A comprehensive approach on the basis of polymer structure-property application is made to evaluate suitable methodology for two types of hydrogels, continuous and discrete. Representative methods for both type are suggested with detailed experimental procedures and results. The work provides comparative data with suggested methods which could be useful to the practitioner. (C) 1995 John Wiley & Sons, Inc.