Barry C.M.F. – TechConnect Briefs

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 [...]

Interfacial Instabilities in Multilayer Extrusion

Ho K., Lee J.S., Viriyabanthorn N., Sung C., Barry C.M.F., Mead J.L., University of Massachusetts-Lowell, US

Polymeric alternating multilayer laminates have been prepared by coextrusion, utilizing a specially designed feedblock to combine the two incoming materials from different extruder. Layer multiplying elements (LME) were used to split the melt stream, divide [...]

Processing Parameters Affecting Nanoinjection Molding

Srirojpinyo C., Yoon S-H, Lee J., Sung C., Mead J.L., Barry C.M.F., University of Massachusetts-Lowell, US

Although micro parts and features are routinely molded, the performance of polymer melts is not well understood when the part wall thickness is less than 1 mm. In this study, the effects of molding conditions [...]

Investigation of Tooling Surfaces on Injection Molded Nanoscale Features

Yoon S-H, Srirojpinyo C., Lee J., Sung C., Mead J.L., Barry C.M.F., University of Massachusetts at Lowell, US

The composition and surface properties of tooling materials become more critical as the size of the molded features decreases [1, 2]. This work investigates the effect of tooling surfaces with micro and nanoscale features. These [...]