title: Pore morphology of porous polymer particles probed by NMR relaxometry and NMR cryoporometry.
abstract: The pore size distribution (PSD) and pore connectivity (PC) within porous polymer particles are probed by combining NMR cryoporometry and NMR relaxometry (spin-spin relaxation). With water as a probe molecule, the constant K in the so-called Gibbs-Thompson equation and the surface relaxivity (rho2) were determined to be K = (420 +/- 50) KA and rho2 = (0.44 +/- 0.01) x 10(-6) ms(-1), respectively. Also, the thickness of the interface layer was estimated to be of the order of one monolayer of water molecules. A detailed analysis of the complete set of NMR data enabled the morphology or pore structure to be probed, and is thoroughly discussed in the text.
authors.affiliation: Department of Chemistry, University of Oslo, P.O. Box 1033, Blindern, NO-0315 Oslo, Norway. eddywh@kjemi.uio
authors.forename: Eddy W
authors.initials: EW
authors.lastname: Hansen
authors.forename: Geir
authors.initials: G
authors.lastname: Fonnum
authors.forename: Ellen
authors.initials: E
authors.lastname: Weng