extrusion – TechConnect Briefs

Processing of Polypropylene by Material Extrusion Additive Manufacturing

Gonzalez-Gutierrez J., Spoerk M., Holzer C., Luxembourg Institute of Science and Technology (LIST), LU

Material extrusion additive manufacturing, also known as fused deposition modeling (FDMTM) or fused filament fabrication (FFF), is one of the simplest and most economical additive manufacturing technologies. The feedstocks used in FFF are filaments, and [...]

Continuous Preparation of Polymer Nanocomposites for Applications in Novel Substrates, Multilayered Materials, and 3D Printing

Barry C., Kazmer D., Mead J., University of Massachusetts-Lowell, US

Polymer nanocomposites are composed of a nanofiller, such as nanoclay, carbon nanotubes, graphene, and nanosilver, in a polymer matrix. Depending on the choice of filler, these nanocomposites exhibit unique material properties, including improved barrier properties, [...]

Continuous Extrusion Process for Preparation of Polymer Nanocomposites

Shearer J.D.M., Barry C.M.F., Mead J., University of Massachusetts-Lowell, US

Polymer nanocomposites are composed of a nanofiller with a polymer matrix. Typical fillers include nanoclay, carbon nanotubes, nanoparticle silver, nanoalumina, etc. The materials exhibit unique material properties, such as improved barrier properties, flame retardance, and [...]

Effect of Layer Multiplying Extrusion on the Morphology and Properties of PS/CNT Nanocomposites

Jian R., Barry C., Mead J., University of Massachusetts-Lowell, US

Multilayer coextrusion has been used to produce extruded films having up to several thousand alternating layers with individual layer thicknesses ranging from several micrometers to only a few nanometers. In this work, the multilayer coextrusion [...]

Alignment of Si3N4 nanorods in Polypropylene single fibers

Rangari V.K., Yousuf M., Jeelani S., Tuskegee University, US

We have successfully aligned the silicon nitride nanorods in polypropylene single filaments through melt extrusion process. Significant enhancement in tensile properties has been observed for 1wt% rod shaped Si3N4 particles. The tensile results clearly show [...]