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XPS study of metal/polymer interaction: Evaporated aluminum on polyvinyl alcohol polymer
Author(s) -
Stoyanov P.,
Akhter S.,
White J. M.
Publication year - 1990
Publication title -
surface and interface analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.52
H-Index - 90
eISSN - 1096-9918
pISSN - 0142-2421
DOI - 10.1002/sia.740150903
Subject(s) - x ray photoelectron spectroscopy , nucleation , polymer , aluminium , metal , monolayer , polyvinyl alcohol , evaporation , stoichiometry , materials science , chemistry , analytical chemistry (journal) , chemical engineering , nanotechnology , organic chemistry , physics , engineering , thermodynamics
The interaction between in situ evaporated aluminum and plyvinyl alcohol (PVA) polymer at 300 K was studied by XPS. The aluminum condenses on the PVA surface by a Volmer–Weber (clustering) mechanism; it takes about a 3.7 monolayer deposition to nucleate clusters sufficiently large to exhibit core binding energies characteristic of bulk metal. Changes in the lineshapes of the C 1s and O 1s peaks and the appearance of a shifted peak in the Al 2p region were interpreted in terms of Al interactions with the surface alcoholic group HCOH, resulting in the formation of an interfacial organometallic complex exhibiting a stoichiometry of 1:1:1.5 for Al, C and O. Polar angle‐resolved XPS measurements and differences in the attenuation factors of the signals from the complex show that the Al is on top and is closer to the oxygen atoms.