摘要:

The electrical conductivity of packed beds containing macroporous Duolite C-25 polystyrene sulfonate cation exchanger equilibrated with aqueous solutions of a single electrolyte (NaCl or HCl) has been measured over a range of electrolyte concentrations. The results are interpreted in terms of a two-phase model for the resin particle involving (1) the resin matrix, with the conventional properties of polystyrene sulfonate cation exchanger, and (2) a macropore dispersed phase which is assumed to have the same conductance as the solution outside the particle. The resin particle conductivity is calculated from the Bruggeman equation using measured bed and interstitial solution conductivities. The external void fraction is assumed to be 0.36. Applying the Bruggeman equation to the two-phase model, the resin matrix conductivity can be calculated from the previously calculated resin particle conductivities and the solution phase conductivities. A nearly constant resin matrix conductivity (which seems realistic for the electrolyte concentrations studied) is calculated for a macropore volume fraction of approximately 0.15. The experimental value of about 0.10 is in good agreement.

ISSN:0022-233X    

DOI:10.1080/10601326908053812

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

摘要:

In the copolymerization of vinyl monomers, four (and only four) reactions are usually required to describe the propagation:

ISSN:0022-233X    

DOI:10.1080/10601326908053813

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0022-233X    

DOI:10.1080/10601326908053814

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0022-233X    

DOI:10.1080/10601326908053815

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor

ISSN:0022-233X    

DOI:10.1080/10601326908053816

出版商:Taylor & Francis Group    

年代:1969

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:10.1080/10601326908053801

出版商:Taylor & Francis Group    

年代:1969

数据来源: Taylor