STP500

    Biological Deterioration of Paints and Paint Films

    Published: Jan 1972


      Format Pages Price  
    PDF Version (316K) 5 $25   ADD TO CART
    Complete Source PDF (26M) 5 $180   ADD TO CART


    Abstract

    Micro- and macroorganisms can destroy both the decorative properties and durabilities of paint films, Figs. 6.4-1 and 6.4.2. Biodeterioration of paint falls into two general categories: enzymatic degradation of protein and cellulosic thickeners that produces an irreversible viscosity loss in latex emulsion paints while still in the container, and microbial disfigurement and deterioration of both water-thinned and solvent-thinned paint films. Enzymes catalyzing the degradation of protein and cellulosic thickeners may be introduced into the paint through contaminated raw materials, storage tanks, and other equipment or be released by bacteria (and less frequently, yeast) growing actively in the liquid paint.


    Author Information:

    Ross, RT


    Paper ID: STP37168S

    Committee/Subcommittee: D01.26

    DOI: 10.1520/STP37168S


    CrossRef ASTM International is a member of CrossRef.