Climate as the most important factor determining anti-fungal biocide performance in paint films

Autor(es)

Shirakawa, Marcia Aiko ^[1] ; Tavares, Roberta Goncalves ^[2] ; Gaylarde, Christine Claire ^[3] ; Santos Taqueda, Maria Elena ^[4] ; Loh, Kai ^[1] ; John, Vanderley Moacyr ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Escola Politecn, Dept Civil Engn, BR-05508900 Sao Paulo - Brazil

^[2] Inst Pesquisas Tecnol Estado Sao Paulo SA, BR-05508901 Sao Paulo - Brazil

^[3] Univ Portsmouth, Microbiol Res Lab, Sch Pharm & Biomed Sci, Portsmouth PO1 2DT, Hants - England

^[4] Univ Sao Paulo, Escola Politecn, Dept Engn Quim, BR-05508900 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Science of The Total Environment; v. 408, n. 23, p. 5878-5886, NOV 1 2010.
• Citações Web of Science: 25

Resumo

The effect of Pigment Volume Content (PVC) on fungal growth on acrylic paint formulations with and without biocide, exposed to weathering in three different climatic regions in Brazil for four years, was studied Latex paints. with PVC of 30%, 35% and 50%, were applied to autoclaved aerated concrete blocks pre-covered with acrylic sealer and acrylic plaster They were exposed to equatorial, tropical and temperate climates in north, south-east, and south Brazil Cladosporium was the most abundant fungal genus detected in the biofilm on the surfaces of all paint formulations at all sites after four years Heaviest fungal colonization occurred in the tropical south-east and lightest in the temperate south of the country, but more phototrophs, principally cyanobacteria, were detected in the equatorial region PVC and presence of biocides were shown to be of less importance than environmental conditions (irradiance, humidity and temperature) for biofilm formation and consequent discolouration These results have important implications for testing of paint formulations (C) 2010 Elsevier B V All rights reserved (AU)

• Processo FAPESP: 06/56860-4 - Microbiologia aplicada à ciência dos materiais de construção civil
• Beneficiário: Márcia Aiko Shirakawa
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores