By Adi Eisenbert, Fred E. Bailey
content material: constitution and functions of ion-containing polymers / R.A. Weiss, W.J. MacKnight, R.D. Lundberg, K.A. Mauritz, C. Thies, and D.A. Brant --
Morphological reviews of version ionic polymers / C.E. Williams, T.P. Russell, R. Jérôme, and J. Horion --
Cation-anion and cation-cation interactions in sulfonated polystyrene ionomers : spectroscopic reviews of the results of solvents / J.J. Fitzgerald and R.A. Weiss --
Spectroscopic and thermal reports of ionic interactions in ionomers / V.D. Mattera, Jr., S.L. Peluso, A.T. Tsatsas, and W.M. Risen, Jr. --
Chemistry in ionomers / D.M. Barnes, S.N. Chaudhuri, G.D. Chryssikos, V.D. Mattera, Jr., S.L. Peluso, I.W. Shim, A.T. Tsatsas, and W.M. Risen, Jr. --
stories at the synthesis of novel block ionomers / Robert D. Allen, Iskender Yilgor, and James E. McGrath --
leisure in styrene-methacrylic acid, sodium salt ionomers / M.H. Litt and G. Bazuin --
Clustering and hydration in ionomers / Bernard Dreyfus --
Composite nature of ionomers : houses and theories / William Y. Hsu --
constitution and serve as of membranes for contemporary chloralkali cells / Ronald L. Dotson --
The chloralkali electrolysis procedure : permselectivity and conductance of perfluorinated ionomer membranes / H.L. Yeager and J.D. Malinsky --
resolution processing of perfluorinated ionomers : contemporary advancements / Michael J. Covitch --
Microstructure of natural ionic membranes / M. Pinéri --
Ion-hopping kinetics in three-arm celebrity polyisobutylene-based version ionomers / Masanori Hara, Adi Eisenberg, Robson F. Storey, and Joseph P. Kennedy --
amendment of ionic institutions through crystalline polar ingredients / I. Duvdevani, R.D. Lundberg, C. Wood-Cordova, and G.L. Wilkes --
answer habit of metal-sulfonate ionomers / R.D. Lundberg and R.R. Phillips --
Use of the Poisson-Boltzmann equation to foretell ion condensation round polyelectrolytes / Bruno H. Zimm --
Dynamics of macromolecular interactions / Stuart A. Allison, J. Andrew McCammon, and Scott H. Northrup --
interplay of anionic detergents with cationic residues in polypeptides : conformational adjustments / Wayne L. Mattice --
complicated coacervation of acid-precursor gelatin with a polyphosphate / T. Lenk and C. Thies --
advanced coacervate formation among acid- and alkaline-processed gelatins / D.J. Burges and J.E. Carless.
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Additional info for Coulombic Interactions in Macromolecular Systems
This i s evident from the 1005 cm band (note that t h i s absorbance i s more intense and broader than the 1003 cm band i n polystyrene), which i s due_to unhydrated s u l f o n i c acid groups, -SO^H. The IR band at 1102 cm" also confirms the presence of -SO^H groups. 7 mole % Na-SPS, the absorbance at 1048 cm" i s probably due to the symmetric stretch of the SO^ anion, and the broad band at 1226 cm i s attributed to the asymmetric stretch of the SO^ anion. The second absorbance due to the asymmetric stretch of the SÇ^ anion i s not e a s i l y I d e n t i f i e d , but i t appears that the 1197 cm band i n the sulfonated polymer may include a contribution from t h i j v i b r a t i o n (note_|he difference between the r a t i o of the 1197 cm and the 1155 cm" i n t e n s i t i e s i n NaSPS gnd polystyrene) ^ Divalent t r a n s i t i o n metal cations such as Cu , Zn , and Mn show d i f f e r e n t e f f e c t s presumably because the d-electrons interact vejv_ s t r o n g l y with the SO" anions.
36 COULOMBIC I N T E R A C T I O N S IN M A C R O M O L E C U L A R SYSTEMS served a p o l y e l e c t r o l y t e e f f e c t i n d i l u t e s o l u t i o n g o f the sodium (Na ) s a l t s i n DMF, but not f o r the magnesium (Mg ) s a l t s . The authors concluded that i n the case of the Na-salt i n DMF the car boxyl group i s f u l l y ionized and the increase i n the reduced v i s cosity at low polymer concentrations (the p o l y e l e c t r o l y t e e f f e c t ) i s a r e s u l t of elongation of the polymer chain due to intrachain e l e c t r o s t a t i c repulsions between the ionized anions.
A s expected, the water uptake was accompanied by an increase i n domain size from 6 . 2 A to 1 1 . 5 A for P B - M g ( 1 0 0 % ) and from 5 . 8 A to 1 3 . 6 A for P B - M g (80%) w i t h a very slight increase in E . The Porod invariant Q and zero-order scattering also decreased. These results are consistent w i t h an increase i n the ionic domain size w i t h water since this would cause a reduction i n the domain electron density and, consequently, the total scattering. The invariance of the interphase is surprising, since the domain w o u l d be expected to become more diffuse i n nature.