Front Matter....Pages i-ix Some Considerations Regarding the Hyperfiltration of Organic Liquids....Pages 7-17 Measurement of Transport Interaction in Membranes....Pages 19-20 Free Volume Estimates in Crystalline and Filled Polymers....Pages 21-26 Diffusion Coefficients of Polystyrenes in Porous Gels from Mass Transfer Dispersion in Gel Permeation Chromatography....Pages 27-33 Mechanism of Gas Permeation Through Porous Polymeric Membrane....Pages 35-74 Composite Hollow Fiber Membranes for Gas Separation: The Resistance Model Approach....Pages 75-78 Purification of Enzymes by Affinity Chromatography....Pages 79-86 Hydrophobic and Other Non-Ionic Parameters in Protein Separation and Adsorptive Immobilization by Substituted Agaroses....Pages 87-92 Use of Synthetic Chemical Ligands for Affinity Chromatography of Proteins....Pages 93-110 Separation of Amines and Acids by Sterically Hindered Polymers....Pages 111-115 Polymeric Separation Media. New Functionalized Polymers for the Selective Removal of Haptens from Complex Organic Mixtures....Pages 117-122 Comparative Performance of Microparticulate Packings for Aqueous Steric Exclusion Chromatography....Pages 123-144 Effluent Free Electrolytic Regeneration of Ion-Exchange Resins....Pages 145-158 An Ultrafiltration Device for Free/Bound Drug Analysis....Pages 159-172 Microporous Membranes and Crossflow Filtration of Macromolecules and Particles....Pages 173-190 Purification of Polymeric Dyes by Ultrafiltration....Pages 191-202 Physico-Chemical Characterization of Enzyme-Loaded Cellulose Acetate Membranes....Pages 203-210 Novel Water Treatment Processes Which Involve Polymers....Pages 211-225 Synthesis and Thermal Regeneration of Polymeric Crown Ethers....Pages 227-231 Ion-Selective Polymeric-Membrane Electrodes with Immobilised Ion-Exchange Sites....Pages 233-246 Characterization of Polyacrylamide Gels by Dynamic Light Scattering Under the Microscope....Pages 247-256 Thermal Crosslinking of a Chemically-Modified Ionomer....Pages 257-267 Characterization of Ionically-Crosslinked Poly (Acrylic Acid) Membranes....Pages 269-269 Back Matter....Pages 271-276 This volume is a eoLleetion of manuseripts based on presenta tions at a symposium "Polymerie Separation Media" organized for the Seeond Chemieal Congress of the North Ameriean Continent held in Las Vegas, August 24-29, 1980. The symposium was organized to bring together researehers in the expanding field of separations based on polymerie media. A diverse eross-seetion of re.seareh areas were presented, whieh were linked by the aetive separation agent being a polymerie material. I would like to thank the authors for their endeavours and the audienee for their partieipation, espeeially in light of the late change of venue for this meeting. Finally I am indebted to the Division of Polymer Chemistry Ine. of the Ameriean Chemieal Soeiety for their sponsorship. Anthony R. Cooper, Ph. D., FRSC Palo Alto, California July 1981 v CONTENTS DEDICATION TO BAREND H.J. HOFSTEE ... .. . . 1 PART I TRANSPORT IN POLYMERIC MEDIA Some Condiserations Regarding the Hyperfi1teration of Organic Liquids. 7 I.J. Bass and P. Meares Measurement of Transport Interaction in Membranes ... . 19 ... K.S. Spiegier, T.S. Brun and A. Berg Free Vo1ume Estimates in Crysta11ine and Fi11ed Polymers . . .. ... 21 H.L. Frisch and A.I. Kreituss Diffusion Coefficients of Po1ystyrenes in Porous Gels From Mass Transfer Dispersion in Gel Permeation Chromatography ... 27 ..
