摘要:

The equilibrium distribution of chloride or nitrate counter-ions of K or NH4co-ions and of water is determined experimentally at different degrees of ionization X[xbar] of hydrophylic weak-base aminated polyvinyl-alcohol membranes. These data are analyzed and explained in terms of thermodynamics interrelating the molality of fixed-charge densities and of counter-ions to that of the amount of water and of diffused salt in the membrane.

ISSN:0022-233X    

DOI:10.1080/00222337108061048

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

The selectivity coefficients between chlorides and nitrates are studied experimentally as functions of the degree of ionization of the membrane, of ionic strength, and of the ionic equivalent fraction of chloride in solution. Through the use of Harned's rule, a simple expression of selectivity between chlorides and nitrates is found to apply with constant interaction coefficients. Swelling and co-ion molalities in Donnan equilibria with mixed external solution of the same cation and different anions are predicted from equilibrium properties with pure electrolytes and from the “net-charge” densities.

ISSN:0022-233X    

DOI:10.1080/00222337108061049

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

The thermal decomposition of polydichlorophosphazene has been examined. The decomposition was found to be first-order with an activation energy of 22.5 ± 2 kcal mole−1. The products comprised a wide range of cyclic and linear dichlorophosphazenes. It is suggested that the decomposition reaction is initiated at the ends of the macromolecules.

ISSN:0022-233X    

DOI:10.1080/00222337108061050

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor

摘要:

This is a scanned image of the original Editorial Board page(s) for this issue.

ISSN:0022-233X    

DOI:10.1080/00222337108061037

出版商:Taylor & Francis Group    

年代:1971

数据来源: Taylor