Abstract
Superfast kinetics of Nd+3, Eu+3, and Gd+3 ions were studied on the surfaces of N, N, N', N'-tetramethylmalonamide (TMMA) and silsesquioxane (SSQXN-8) resins. TMMA and SSQXN-8 were prepared by suspension polymerization and sol-gel routes, respectively. They were identified using elemental analysis, FTIR, H-NMR, C-13-NMR, MIP, and BET surface area. Kinetic investigations were performed in batch conditions and different models were used to fit the data; Boyd and Helfferich models were found the best, The diffusion of the ions through the resins were very fast and found to be in the order of 10(-16) m(2)/S. Effective diffusions of the studied ions were found to be 10(-15) order of magnitude and directly proportional to the kinetic energy of the transition state. Delta S* values from -166.044 to -179.297 J mol(-1) K-1 were estimated as entropy stability factors of the system. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 113: 3038-3048, 2009