SciELO - Scientific Electronic Library Online

 
vol.72 número1Removal of entrained organic matter in the copper electrolyte by ozonationEffect of sulfate on the pitting potential of austenitic stainless steels 18Cr8Ni and 17Cr6Mn5Ni in chloride media índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


REM - International Engineering Journal

versão On-line ISSN 2448-167X

Resumo

MORAIS, Dayanne Diniz de Souza et al. Tayloring PS/PCL blends: characteristics of processing and properties. REM, Int. Eng. J. [online]. 2019, vol.72, n.1, pp.87-95. ISSN 2448-167X.  http://dx.doi.org/10.1590/0370-44672017720137.

Blends of Polystyrene (PS) and Poly(ε-caprolactone) (PCL) were twin screw extruded, two PSs, with low and high melt flow rate (MFR) were used and their feasibility within PCL investigated by means of torque rheometry, mechanical tests, heat deflection temperature (HDT) and scanning electron microscopy (SEM); predictive models were utilized to evaluate interfacial adhesion in PS/PCL blends. Results show that no decreasing was verified in torque rheometry plots suggesting thermally stable blends; elastic modulus decreased and elongation at break increased in PS/PCL blends compared to neat PS. PS/PCL blends with low MFR PS and higher PCL amount are more thermodynamically stable. Higher HDT was verified in PS/PCL blends. The trends observed applying predictive models are indicative of poor adhesion between PCL and PS, agreeing with coalescence and phase segregation as verified in SEM images. PS/PCL systems with higher MFR PS presented the best results.

Palavras-chave : PS/PCL blends; processing; mechanical properties; predictive models.

        · texto em Inglês     · Inglês ( pdf )