Data/hora: 19/05/2024 06:32:12

Biblioteca(s): | Embrapa Instrumentação.
Data corrente: | 23/03/2005
Data da última atualização: | 23/03/2005
Autoria: | CORADINI, E.; CARVALHO A. J. F.; CURVELO, A. A. S.; MATTOSO, L. H. C.
Título: | Propriedades mecânicas de blendas de amido/zeína plastificadas com glicerol.
Ano de publicação: | 2003
Fonte/Imprenta: | In: CONGRESSO BRASILEIRO DE POLÍMEROS. 7., nov. 2003., Belo Horizonte, MG. Anais... São Carlos: Associação Brasileira de Polímeros, 2003. p. 1005-1006.
Idioma: | Português
Conteúdo: | Blends of starch and zein plasticized with glycerol were prepared in an intensive batch mixer at 160°C. The mixtures were molded by compression at 160 °C from which the specimens for mechanical tests were prepared. The results of mechanical tests show that Young's Modulus increases sharply with zein addition, while decreases with increase in glycerol contento Tensile strength increases with zein addition especially after 50% of zein and decrease with glycerol contento Elongation at break decrease with addition of zein, however a small variation was observed in elongation for blends with more than 20% of zein. For starch/glycerol compositions the elongation decrease for the most plasticized samples, which was attributed to phase separation and crystallizationinduce by the presence ofplasticizer.
Palavras-Chave: | Filmes finos; Polímeros.
Categoria do assunto: | --
Registro original: | Embrapa Instrumentação (CNPDIA)
Exemplares: | CNPDIA - (8755-1) - UPC - SP - -- - PROCI-03.00100 -  - 2003.00100 - DIS