caa a22 4500 475763645 CHVBK 20180406123558.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/s003960050553 doi (NATIONALLICENCE)springer-10.1007/s003960050553 Characterization of superabsorbing polymers by NMR imaging [Elektronische Daten] [B. Traub, T. Fritzhanns, S. Hafner, H. W. Spiess]  The use of NMR imaging techniques for the characterization of superabsorbing polymers is explored. Spatial differences in the cross-link densities of polyacrylate-based superabsorbing particles are investigated by parameter-selective 1H NMR imaging of samples swollen with water. Images of the transverse relaxation time and of the self-diffusion coefficient of the absorbed water provide valuable information on the local water mobility and, thus, indirectly also on the polymer. The time evolution of the swelling process was also studied by NMR images acquired after different swelling times. Moreover, using magic-angle-spinning imaging, the influence of mechanical load on the swollen particle was investigated by taking advantage of the centrifugal forces on the spinning sample. These experiments indicate the presence of two water components, one strongly adsorbed, while the other is relatively mobile. Springer-Verlag Berlin Heidelberg, 2000 Key words Polyacrylate nationallicence Super absorber nationallicence Diffusion NMR imaging nationallicence Traub B. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut Fritzhanns T. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut Hafner S. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut Spiess H. W. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut https://doi.org/10.1007/s003960050553 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s003960050553 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Traub B. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut NATIONALLICENCE 700 1- Fritzhanns T. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut NATIONALLICENCE 700 1- Hafner S. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut NATIONALLICENCE 700 1- Spiess H. W. Max-Planck-Institut für Polymerforschung Postfach 3148, 55021 Mainz, Germany e-mail: spiess@mpip-mainz.mpg.de Tel.: +49-6131-379121 Fax: +49-6131-379100, DE aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer