PMID- 19950952 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20100528 LR - 20100223 IS - 1520-5827 (Electronic) IS - 0743-7463 (Linking) VI - 26 IP - 5 DP - 2010 Mar 2 TI - Surface analysis of polymers treated by remote atmospheric pressure plasma. PG - 3710-9 LID - 10.1021/la9032018 [doi] AB - The surfaces of high-density polyethylene (HDPE), poly(methyl methacrylate) (PMMA), and polyethersulfone (PES) were treated with a low-temperature, atmospheric pressure oxygen and helium plasma. The polymers were exposed to the downstream afterglow of the plasma, which contained primarily oxygen atoms and metastable oxygen molecules ((1)Delta(g) O(2)), and no ions or electrons. X-ray photoelectron spectroscopy (XPS) of HDPE revealed that 20% of the carbon atoms were converted into oxidized functional groups, with about half of these being carboxylic acids. Attenuated total reflection infrared spectroscopy of all three polymers was obtained in order to determine the types of functional groups formed by atmospheric plasma exposure. It was found that the polymers were rapidly oxidized with addition of alcohols, ketones, and carboxylic acids to the carbon backbone. Chain scission occurred on HDPE and PMMA, while on PES the aromatic groups underwent ring-opening and insertion of carboxylic acid. FAU - Gonzalez, Eleazar 2nd AU - Gonzalez E 2nd AD - Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, California 90095, USA. FAU - Hicks, Robert F AU - Hicks RF LA - eng PT - Journal Article PL - United States TA - Langmuir JT - Langmuir : the ACS journal of surfaces and colloids JID - 9882736 EDAT- 2009/12/03 06:00 MHDA- 2009/12/03 06:01 CRDT- 2009/12/03 06:00 PHST- 2009/12/03 06:00 [entrez] PHST- 2009/12/03 06:00 [pubmed] PHST- 2009/12/03 06:01 [medline] AID - 10.1021/la9032018 [doi] PST - ppublish SO - Langmuir. 2010 Mar 2;26(5):3710-9. doi: 10.1021/la9032018.