Abstract
1. 1. The volume and composition of a number of cation-exchange resins, measured under various experimental conditions, have been described. For a particular resin, the volume increases with the (hydrated) ionic volume of the exchange cation (except where ion-pair formation takes place). This phenomenon is discussed in terms of the Bjerrum, Harned, Stokes-Robinson theory. 2. 2. The swelling of resins having different degrees of cross-linking is described in terms of an osmotic model. Various sulfonated polystyrene—divinylbenzene resins are compared. 3. 3. The swelling and composition of a resin phase containing more than one species of exchange cation is described. Net partial molar volumes are calculated. 4. 4. The deswelling of resins in concentrated electrolytic solutions is described, and the mean ionic activity coefficient of the movable electrolyte within the resin phase calculated. This activity coefficient decreases sharply as the concentration in the external solution phase decreases.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
