Effect of cathode polarization on copolymers of ethylene with vinyl acetate

Journal Article · Wed Aug 10 04:00:00 EDT 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6082315

Pud, A A; Shapoval, G S; Skubin, V K; Andreev, V L

The use of cathode polarization of a metal combined with insulation coatings (Ct) for protecting underground pipelines from corrosion permits prolonging their time in service to a significant degree. If the Ct exhibits local damage and the pipe undergoes cathode polarization in a conducting medium (for example, groundwater or moist soil), then peeling of the Ct occurs beginning with the edge of the damage. The behavior of copolymers of ethylene and vinyl acetate (CEVA) with a different concentration of vinyl acetate groups (12.33 and 45%) and some additives on a cathode-polarized support (on the cathode) was investigated. Electrochemical reductive decomposition (ECRD) of the copolymers was studied in an atmosphere of argon in dimethylformamide against a background of 0.05 mole/dm/sup 3/ N(C/sub 4/H/sub 9/)/sub 4/I. The occurrence of decomposition reactions was judged by the data from chronovoltammetry, gravimetry, IR spectroscopy, and differential thermal analysis.

• OSTI ID: 6082315
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 61:2; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
420205* -- Engineering-- Transport & Storage Facilities-- (1980-)
ACETATES
ALKENES
BINDING ENERGY
CARBOXYLIC ACID SALTS
CATHODIC PROTECTION
CHEMICAL ANALYSIS
CHEMICAL REACTIONS
COATINGS
COPOLYMERS
CORROSION PROTECTION
DECOMPOSITION
DIFFERENTIAL THERMAL ANALYSIS
DISSOCIATION
ELECTRIC POTENTIAL
ELECTROLYSIS
ELECTRONS
ELEMENTARY PARTICLES
ENERGY
EROSION
ETHYLENE
FERMIONS
GRAVIMETRIC ANALYSIS
HYDROCARBONS
INFRARED SPECTRA
LEPTONS
LYSIS
MATERIALS TESTING
MOLECULAR STRUCTURE
ORGANIC COMPOUNDS
ORGANIC POLYMERS
PIPELINES
POLYMERS
PROTECTIVE COATINGS
QUANTITATIVE CHEMICAL ANALYSIS
SPECTRA
TESTING
THERMAL ANALYSIS
VALENCE
VOLTAMETRY