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Recent Articles

Characterizing the bulk viscosity of polypropylene melt

Prapol Chivapornthip and Erik L. J. Bohez
19 December 2016
Uniaxial compression experiments show that the bulk viscosity has a higher magnitude than shear viscosity and should therefore not be neglected during flow analysis of the injection-molding process.

Polytetrafluoroethylene as a suitable filler for poly(lactic acid) composites

An Huang, Haoyang Mi, Hrishikesh Kharbas, Tom Ellingham, Lih-Sheng Turng, and Xiangfang Peng
15 December 2016
The mechanical, rheological, and foaming properties of melt-blended samples were investigated.

Longitudinal ultrasonic-assisted microinjection molding process for improved mold filling

Shan Gao
9 December 2016
Theoretical calculations and simulations have been created to analyze the mechanism of melt flow and can be used to guide selection of process parameters.

Minimizing wrinkling of thermoformed polymer films

G. Prasath Balamurugan, Rohan N. Pukadyil, Michael R. Thompson, Kent E. Nielsen, and Frank A. Brandys
30 November 2016
Biaxial stretching of laminates during thermoforming relieves stored compressive stresses and produces decorative parts with improved surface appearance.

Influence of process parameters on fiber orientation in reinforced thermoplastics

Teresa Möbius, Rico Blei, Niels Modler, Camilo Pérez, and Tim A. Osswald
24 November 2016
Simulations and experiments are conducted to determine how the fiber orientation of composite parts changes during a hot-press manufacturing process.

Starve-fed single-screw extrusion of polymer blends

Krzysztof J. Wilczyński, Adrian Lewandowski, and Krysztof Wilcyński
21 November 2016
In contrast to flood-fed extrusion, two distinct stages of melting are observed during starve-fed extrusion and a novel melting mechanism is thus proposed.

Novel nanocarbon/polyurethane composites for corrosion resistant coatings

Srinivasarao Pilla, Rohit Ranganathan Gaddam, Ramanuj Narayan, and Kothapalli V. S. N. Raju
17 November 2016
A versatile synthesis method is used to realize high-performance nitrogen-core hyperbranched polymer–carbon nanohorn hybrid materials.

Influence of graphene oxide inpolytriazoleimide nanocomposites

Balasubramanian Rukmanikrishnan, Bajaji Sadhasivam, and Sarojadevi Muthusamy
11 November 2016
Polytriazoleimide composites containing at least 1wt graphene oxide nanoparticles exhibit substantially improved thermal, mechanical, flame retardancy, dielectric, and water-absorption properties.

Magnetite nanoparticle polymer composites for prolonged and controlled drug release

Burcu Oktay, Serap Demir, and Nilhan Kayaman-Apohan
9 November 2016
Hydrogel samples that contain drug-loaded magnetite particles exhibit good release characteristics in both the presence and absence of a magnetic field.

Using physical and simulated data to improve injection molding performance

María G. Villarreal-Marroquín, Po-Hsu Chen, Rachmat Mulyana, José M. Castro, Thomas J. Santner, and Angela M. Dean
7 November 2016
A novel, calibrated-predictor-based optimization methodology is used to identify the best compromises between competing processing conditions.