SciELO - Scientific Electronic Library Online

 
vol.22 número4Um material alternativo à base de SBS para substituir a guta percha no tratamento endodônticoAnálise térmica da poliacrilonitrila plastificada com glicerol em extrusora 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

PASSADOR, Fabio R.; RUVOLO FILHO, Adhemar C.  e  PESSAN, Luiz A.. Structural characterization of HDPE/LLDPE and OMMT blend-based nanocomposites obtained by different blending sequences. Polímeros [online]. 2012, vol.22, n.4, pp.357-363.  Epub 14-Ago-2012. ISSN 0104-1428.  https://doi.org/10.1590/S0104-14282012005000052.

High density polyethylene/linear low density polyethylene (HDPE/LLDPE) blend-based nanocomposites were prepared in a torque rheometer, using a mixture of HDPE-g-MA and LLDPE-g-MA both containing 1% of maleic anhydride as compatibilizer system. The effect from five blending sequences on the microstructure of the nanocomposites was investigated. The structural characterization was performed through wide angle X-ray diffraction (WAXD), transmission electron microscopy (TEM) and rheological properties. The results showed that the formation of morphology is dependent on the sequence of nanocomposite preparation and that the use of a mixture of two compatibilizer agents, miscible with both components of the blend matrix, facilitated the dispersion of the nanoclay throughout the matrix. The blending sequence where the nanoclay was first mixed with components of lower viscosity and crystallinity (LLDPE and/or LLDPE-g-MA) yielded better distribution and dispersion of nanoclay in the polymer blend.

Palavras-chave : Nanocomposites; HDPE [LLDPE]; blend sequence.

        · 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