SciELO - Scientific Electronic Library Online

 
vol.14 número1Efeitos da temperatura e do tipo de iniciador na redução do teor de monômero residual durante reações de copolimerização em emulsão índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

THIRE, Rossana M. S. M. et al. Reduction of hydrophilicity of biodegradable starch-based films by plasma polymerization. Polímeros [online]. 2004, vol.14, n.1, pp.57-62. ISSN 1678-5169.  https://doi.org/10.1590/S0104-14282004000100015.

Due to low cost and excellent biodegradability, the use of starch as a raw material for bioplastic production is growing in interest. However, the properties of starch-based materials are affected by relative humidity during their use and storage due to their hydrophilic character. In this work, thermoplastic cornstarch films were coated by cold plasma technology with a protective thin layer in order to reduce water sensitivity. 1-Butene and 1,3-butadiene were used as monomers for plasma polymerization. Coated films presented a reduction of water absorption up to 80% an increase in contact angle related to water. These results indicated that the coating process reduced significantly the hydrophilic nature of the starch-based materials.

Palavras-chave : Thermoplastic starch; plasma polymerization; atomic force microscopy; hydrophilicity.

        · 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