In situ polymerized polyaniline films. 4. Film formation in dispersion polymerization of aniline.
Polyaniline films were grown on glass supports during dispersion polymerizations of aniline using poly(N-vinylpyrrolidone) and hydroxypropylcellulose as stabilizers. The initiation of polyaniline chains is proposed to be heterogeneously catalyzed by the surfaces immersed in the reaction mixture. Film formations in dispersion and precipitation polymerizations are compared. Surfometry and optical absorption were used to assess the submicrometer film thickness, and FTIR spectroscopy was used to analyze the chemical structure of films and prove the absence of stabilizer. The film thickness was proportional to the dimensions of simultaneously produced colloidal polyaniline particles. The conductivity of films increased with increasing film thickness.
Riede
Andrea
A
Faculty of Physics and Earth Sciences, University of Leipzig, Leipzig, D-04103, Germany.
Helmstedt
Martin
M
Sapurina
Irina
I
Stejskal
Jaroslav
J
D000814:Aniline Compounds / Q000138:chemical synthesis* / Q000737:chemistry*; D002482:Cellulose / Q000031:analogs & derivatives / Q000737:chemistry; D004553:Electric Conductivity; D005898:Glass / Q000737:chemistry; D008567:Membranes, Artificial; D010316:Particle Size; D011205:Povidone / Q000737:chemistry; D013499:Surface Properties
D000814:Aniline Compounds; D008567:Membranes, Artificial; C416807:polyaniline; D002482:Cellulose; C008079:hydroxypropylcellulose; D011205:Povidone; C023650:aniline