SciELO - Scientific Electronic Library Online

 
vol.20 número2Synthesis and characterization of pressure-sensitive adhesives of waterborne polyurethane from maleinizated castor oilInfluência da Estrutura química do co-monômero nas propriedades mecânicas e adesivas de redes epoxídicas índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

versão impressa ISSN 0104-1428

Resumo

FARIA, Adriano Uemura de  e  MARTINS-FRANCHETTI, Sandra Mara. Biodegradation of Polypropylene (PP), Poly(3-hydroxybutyrate) (PHB) Films and PP/PHB Blend by Microorganisms from Atibaia River. Polímeros [online]. 2010, vol.20, n.2, pp.141-147.  Epub 25-Jun-2010. ISSN 0104-1428.  https://doi.org/10.1590/S0104-14282010005000024.

The purpose of this study is to investigate the biodegradation of films made with PP, PHB and PP/PHB (1:1) blend caused by microorganisms from polluted river which received several types of waste, including an oil refinery effluent. The films were obtained by melting the powder from the material at 175 ºC, pressed at 71.3 kgf.cm-2 and cooled at 25 ºC. These films were kept in polluted river water samples, collected before and after the discarding of oil refinery waste, and they were kept in the bacteriological incubator at 28 ºC for 120 days. The changes caused by microbial action on the films were analyzed by measurements of weight loss, Fourier transform infrared (FTIR) and scanning electronic microscopy (SEM). The results proved that PHB degradation occurs in amorphous and crystalline phases, being more significant in the river water which received refinery oil waste, containing microorganisms recognized as potentially capable to degrade recalcitrant substances in the environment.

Palavras-chave : Biodegradation; PP; PHB; blends; microorganisms; polluted river.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons