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Novel method of preparing Ag–Hg alloy on polyacrylamide films and their structure
Author(s) -
Lee Jiunn Yih,
Tanaka Hisashi,
Takezoe Hideo,
Fukuda Atsuo,
Kuze Eiichi,
Iwanaga Hiroshi
Publication year - 1984
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1984.070290307
Subject(s) - alloy , potentiometric titration , materials science , polyacrylamide , aqueous solution , ammonia , thin film , titration , chemical engineering , analytical chemistry (journal) , inorganic chemistry , chemistry , polymer chemistry , composite material , nanotechnology , chromatography , organic chemistry , electrode , engineering
A novel method is proposed of preparing thin Ag–Hg alloy on PAAm film surface at room temperature: The film of interest is formed by holding PAAm aqueous solution with AgNO 3 in Hg‐saturated atmosphere. Two kinds of films, one of which is a conductor and the other an insulator, can be selectively formed with pH‐controlled PAAm solution by ammonia. The conducting surface is assigned to the α phase of Ag–Hg alloy by means of X‐ray analysis. Potentiometric titration and IR spectral studies suggest the existence of PAAm–Ag + complexes. On the basis of their structure and the oxidation and reduction potential of Ag + and Hg 2+ , the mechanism of film formation is also discussed.