PMID- 18291410 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20080603 LR - 20091111 IS - 0021-9797 (Print) IS - 0021-9797 (Linking) VI - 320 IP - 2 DP - 2008 Apr 15 TI - Inferring wettability of heterogeneous surfaces by ToF-SIMS. PG - 563-8 LID - 10.1016/j.jcis.2008.01.042 [doi] AB - Time-of-flight secondary ion mass spectrometry (ToF-SIMS) has been examined as a possible predictive tool for surface wettability. Heterogeneous surfaces were prepared with hydrophilic and hydrophobic regions of known surface coverage using self-assembled monolayers. The surface coverage of each component was then correlated with ToF-SIMS fragmentation of the hydrophobic and hydrophilic surface groups and static contact angle measurements. From these measurements, a clear relationship between the surface wettability and relative intensity of characteristic secondary ions was identified. Moreover, our results for planar surfaces can be extrapolated to predict the wettability of particulate samples for which direct contact angle measurements are not straightforward. The ability to infer particle wettability by ToF-SIMS is well suited to mineral characterization and in particular, the prediction of mineral flotation efficiencies. FAU - Priest, Craig AU - Priest C AD - Ian Wark Research Institute, ARC Special Research Centre for Particle and Material Interfaces, University of South Australia, Mawson Lakes, South Australia 5095, Australia. FAU - Stevens, Nathanael AU - Stevens N FAU - Sedev, Rossen AU - Sedev R FAU - Skinner, William AU - Skinner W FAU - Ralston, John AU - Ralston J LA - eng PT - Journal Article DEP - 20080202 PL - United States TA - J Colloid Interface Sci JT - Journal of colloid and interface science JID - 0043125 EDAT- 2008/02/23 09:00 MHDA- 2008/02/23 09:01 CRDT- 2008/02/23 09:00 PHST- 2007/12/21 00:00 [received] PHST- 2008/01/22 00:00 [revised] PHST- 2008/01/26 00:00 [accepted] PHST- 2008/02/23 09:00 [pubmed] PHST- 2008/02/23 09:01 [medline] PHST- 2008/02/23 09:00 [entrez] AID - S0021-9797(08)00084-2 [pii] AID - 10.1016/j.jcis.2008.01.042 [doi] PST - ppublish SO - J Colloid Interface Sci. 2008 Apr 15;320(2):563-8. doi: 10.1016/j.jcis.2008.01.042. Epub 2008 Feb 2.