PMID- 22662874 OWN - NLM STAT- MEDLINE DCOM- 20121029 LR - 20120703 IS - 1520-5851 (Electronic) IS - 0013-936X (Linking) VI - 46 IP - 13 DP - 2012 Jul 3 TI - Release of carbon nanotubes from an epoxy-based nanocomposite during an abrasion process. PG - 7366-72 LID - 10.1021/es300320y [doi] AB - The abrasion behavior of an epoxy/carbon nanotube (CNT) nanocomposite was investigated. An experimental setup has been established to perform abrasion, particle measurement, and collection all in one. The abraded particles were characterized by particle size distribution and by electron microscopy. The abrasion process was carried out with a Taber Abraser, and the released particles were collected by a tube for further investigation. The particle size distributions were measured with a scanning mobility particle sizer (SMPS) and an aerodynamic particle sizer (APS) and revealed four size modes for all measured samples. The mode corresponding to the smallest particle sizes of 300-400 nm was measured with the SMPS and showed a trend of increasing size with increasing nanofiller content. The three measured modes with particle sizes from 0.6 to 2.5 mum, measured with the APS, were similar for all samples. The measured particle concentrations were between 8000 and 20,000 particles/cm(3) for measurements with the SMPS and between 1000 and 3000 particles/cm(3) for measurements with the APS. Imaging by transmission electron microscopy (TEM) revealed that free-standing individual CNTs and agglomerates were emitted during abrasion. FAU - Schlagenhauf, Lukas AU - Schlagenhauf L AD - Laboratory for Functional Polymers, Swiss Federal Institute for Materials Testing and Research, Dubendorf, Switzerland. FAU - Chu, Bryan T T AU - Chu BT FAU - Buha, Jelena AU - Buha J FAU - Nuesch, Frank AU - Nuesch F FAU - Wang, Jing AU - Wang J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120620 PL - United States TA - Environ Sci Technol JT - Environmental science & technology JID - 0213155 RN - 0 (Environmental Pollutants) RN - 0 (Epoxy Compounds) RN - 0 (Nanotubes, Carbon) SB - IM MH - Environmental Monitoring MH - Environmental Pollutants/*chemistry MH - Epoxy Compounds/*chemistry MH - Nanocomposites/*chemistry/ultrastructure MH - Nanotubes, Carbon/*chemistry/ultrastructure MH - Particle Size EDAT- 2012/06/06 06:00 MHDA- 2012/10/30 06:00 CRDT- 2012/06/06 06:00 PHST- 2012/06/06 06:00 [entrez] PHST- 2012/06/06 06:00 [pubmed] PHST- 2012/10/30 06:00 [medline] AID - 10.1021/es300320y [doi] PST - ppublish SO - Environ Sci Technol. 2012 Jul 3;46(13):7366-72. doi: 10.1021/es300320y. Epub 2012 Jun 20.