Mead J. – Page 2 – TechConnect Briefs

Polymer Based Continuous Offset Printing

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

Polymeric materials have tremendous potential for nano and micro-structured products because of their fabrication ease and wide property range. The fabrication processes for polymers are cost-effective and rapid. This work presents novel manufacturing approaches for [...]

High-rate Manufacturing of 3D Products with Micro and Nanostructured Surfaces

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

Injection molding permits the manufacturing of complex three-dimensional products with micro and nanostructured surfaces in less than 30 seconds. Successful high-rate manufacturing of these surfaces depends on understanding the changes required in material selection, tool [...]

Novel Additive Manufacturing of Tooling with Micro and Nanostructured Surfaces

Sit L.W., Kumbhani M., Genera J.A., Shearer J., Mead J., Barry C., University of Massachusetts-Lowell, US

Tooling with micro and nanostructured surfaces is employed for high-rate fabrication of products using injection molding, hot embossing, and related processes. Current subtractive (machining, lithography) and additive (prototyping) methods for manufacturing tooling are expensive and [...]

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 [...]

Durable Icephobic Coatings

Constantinou J., Panwar A., Mitra S., Nahum T., Wagner M., Dodiuk H., Barry C., Kenig S., Mead J., University of Massachusetts-Lowell, US

Accumulation of ice on the surfaces of windmills, airplanes, ships and telecommunications equipment hinders the efficient functioning of this equipmement, which can be overcome by the use of an icephobic coating. Prior work has established [...]

Polymer Nanomanufacturing Strategies for Multifunctional Nanomaterials

Mead J., Barry C., Wei M., Busnaina A.A., University of Massachusetts-Lowell, US

Polymeric materials offer tremendous potential for preparing functional materials using nanoscale fillers and features. For example, the use of nanolayered materials in barrier or optical applications, nanofeatured materials for hydrophobic surfaces, and patterned polymer blends [...]

Numerical Simulation of Polymer Phase Separation on a Patterned Substrate with Nano Features

Shang Y., Wei M., Kazmer D., Mead J., Barry C., University of Massachusetts-Lowell, US

Phase separation of an asymmetric immiscible binary polymer system in an elastic field with the existence of a heterogeneously functionalized substrate surface was numerically studied in 2D and 3D. An unconditionally stable method for time [...]

Phase Morphology Control in Electrospun Nanofibers From Polymer Blends

Wei M., Kang B., Sung C., Mead J., University of Massachusetts-Lowell, US

Nanofibers of polybutadiene/polycarbonate blends were electrospun from polymer solutions. The effect of composition on the resulting internal morphology of the nanofibers was studied using Transmission Electron Microscopy (TEM). When the composition ratio of PB/PC blends [...]