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|Title:||Surface structures of fluoropolymer, polyolefin and polyester films after modification by graft polymerization|
|Authors:||Kang, E.T. |
|Source:||Kang, E.T.,Neoh, K.G.,Tan, K.L.,Loh, F.C.,Liaw, D.J. (1994-12). Surface structures of fluoropolymer, polyolefin and polyester films after modification by graft polymerization. Polymers for Advanced Technologies 5 (12) : 837-842. ScholarBank@NUS Repository. https://doi.org/10.1002/pat.1994.220051211|
|Abstract:||Pristine and argon plasma pretreated polytetrafluoroethylene (PTFE), polystyrene (PS), high-density polyethylene (HDPE) and poly(ethy1ene terephthalate) (PET) films have been subjected to near-UV light-induced graft polymerization with water-soluble acylamide (AAm), the sodium salt of styrene sulfonic acid (NaSS), ac y l i c acid (AAc) and N,N-dimethylaminoethylmethylacrylate (DMAEMA) monomers. The structure and composition at the substrate surface with grafted polymer were studied by angle-resolved X-ray photoelectron spectroscopy (XPS). In most cases, the density of surface grafting is enhanced by plasma pretreatment. For each polymer substrate with a substantial amount of grafting, the hydrophilic graft penetrates or becomes partially submerged beneath a thin surface layer of dense substrate chains. This stratified microstructure is consistent with the static secondary ion mass spectroscopy (SIMS) and Ar+ beam depth profiling results. The two latter techniques also suggest that when the grafted polymer has a bulky substituent, there is less efficient penetration of the grafted polymer below the surface. © 1994 by John Wiley & Sons, Ltd.|
|Source Title:||Polymers for Advanced Technologies|
|Appears in Collections:||Staff Publications|
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