RT Journal Article
T1 Jet milling as an alternative processing technique for preparing polysulfone hard nanocomposites
A1 Llorente Muga, Amaia
A1 Serrano Prieto, María Bernarda
A1 Baselga Llidó, Juan
A1 Gedler, Gabriel
A1 Ozisik, Rahmi
AB This work describes how a solid-state blending method such as jet milling can be used to successfully prepare polysulfone (PSU)/-alumina nanocomposites. For comparison purposes, conventional melt extrusion was used as well. Morphological analysis revealed how jet mill blending allows obtaining well-dispersed -alumina nanoparticles within a polysulfone matrix without any surface treatment, with an important decrease of particle size promoted by the breakup of agglomerates and aggregates due to the particle-particle impacts during processing, which was not observed in the extruded nanocomposites. DSC analysis demonstrated that jet-milling processing promoted T-g enhancements with alumina addition, while TGA experiments confirmed the increment of thermal stability of the nanocomposites prepared by jet milling when compared with the composites prepared by extrusion. The tensile tests showed that ductility remains at a high value for milled nanocomposites, which agreed with the fracture surface images revealing large plastic deformation as a function of the alumina content. This comparative study indicates that the dispersion of nanoparticles in PSU was more homogeneous, with smaller nanoparticles when preparing nanocomposites using jet milling, showing a strong correlation with the enhanced final properties of the nanocomposites.
PB Hindawi
SN 1687-8434
YR 2019
FD 2019-01-01
LK https://hdl.handle.net/10016/38128
UL https://hdl.handle.net/10016/38128
LA eng
NO The authors acknowledge funding from Spanish Ministerio de Economía y Competitividad under grant MAT2014-57557-R. R. Ozisik would like to acknowledge financial support from the US National Science Foundation (CMMI–1538730).
DS e-Archivo
RD 1 jul. 2024