Please use this identifier to cite or link to this item:
|Title:||ToF-SIMS studies of poly(methyl methacrylate-co-methacrylic acid), poly(2,2,3,3,3-pentafluoropropyl methacrylate-co-4-vinylpyridine) and their blends||Authors:||Huang, H.L.
|Issue Date:||15-Apr-2004||Citation:||Huang, H.L., Goh, S.H., Lai, D.M.Y., Huan, C.H.A. (2004-04-15). ToF-SIMS studies of poly(methyl methacrylate-co-methacrylic acid), poly(2,2,3,3,3-pentafluoropropyl methacrylate-co-4-vinylpyridine) and their blends. Applied Surface Science 227 (1-4) : 373-382. ScholarBank@NUS Repository. https://doi.org/10.1016/j.apsusc.2003.12.015||Abstract:||The surface properties of some polymers and their blends were investigated by both static and dynamic time-of-flight secondary ion mass spectrometry (ToF-SIMS). For poly(methyl methacrylate) (PMMA) and poly(methyl methacrylate-co-methacrylic acid) (MAA26, 26 denoting the mol% of methacrylic acid unit in the copolymer), the -OCOCH3 pendant chain of MMA unit is the dominant group at the air-polymer interface. For poly(2,2,3,3,3- pentafluoropropyl methacrylate) (PF0) and poly(2,2,3,3,3-pentafluoropropyl methacrylate-co-4-vinylpyridine) (PF40, 40 denoting the mol% of 4-vinylpyridine unit in the copolymer), the air-polymer interface is almost completely occupied by the fluorinated pendant chain because of its extremely low surface energy. When PF40 and MAA26 are blended, the fluorinated component accumulates on the blend surface with the fluorinated pendant chain dominating the blend surface. The results of depth profiling by dynamic ToF-SIMS are in agreement with the static ToF-SIMS results. The fluorinated pendant chain of PF0 rearranges on the polymer surface at a depth of about 2.5nm, while the fluorinated component accumulates on the blend surface at a depth of about 5nm. For blends containing 1.5wt.% of fluorinated component, practically all the fluorinated component accumulates on the blend surface. The dynamic ToF-SIMS results also verify that the hydrogen-bonding interaction between PF40 and MAA26 does not completely eliminate surface enrichment of the fluorinated component. © 2004 Elsevier B.V. All rights reserved.||Source Title:||Applied Surface Science||URI:||http://scholarbank.nus.edu.sg/handle/10635/95324||ISSN:||01694332||DOI:||10.1016/j.apsusc.2003.12.015|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Apr 4, 2020
WEB OF SCIENCETM
checked on Mar 19, 2020
checked on Mar 29, 2020
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.