Papers – Page 13 – TechConnect Briefs

Ageing of elastomeric composites with natural antioxidants

Masek A., Zaborski M., Institute of Polymer and Dye Technology, PL

The natural antioxidants which were added to ethylene-octene elastomer (polyolefin elastomer-Engage). Vulcanizates were then subjected to numerous ageing: weathering (climat of Floryda), UV (0,7 W/m2), thermo-oxidation ageing (1000C/10days) and thermal-shock (-600C/+1000C) as a function of [...]

Computational Studies on Mechanisms for the Organocatalytic Depolymerization of Poly(ethylene) Terephthalate

Jones G.O., Horn H.W., Wei D.S., Fukushima K., Lecuyer J.M., Coady D.J., Hedrick J.L., Rice J.E., IBM, US

Poly(ethylene) terephthalate (PET) is a widely used thermoplastic commonly found in packaging products and that constitutes a large percentage of total plastic refuse. We have examined the depolymerization of PET with alcohols and amines, a [...]

Novel Green Polymer Composites: Major Enhancements in the Crystallization Kinetics of Poly(lactic acid) and Mechanical Properties of Polypropylene Created via Solid-State Shear Pulverization

Brunner P.J., Torkelson J.M., Kane N., Northwestern University, US

Hybrids of polylactide (PLA) or polypropylene (PP) with microcrystalline cellulose (MCC) were created using a continuous, industrially scalable, and environmentally benign process called solid-state shear pulverization (SSSP). The PLA composite was subsequently melt-processed (MP) with [...]

Self-assemblies of magnetic nanoparticles (MNPs) and peroxidase enzymes: mesoporous structures and nanoscale magnetic field effects (nano-MFEs) for enhanced activity BioNanoCatalysts (BNCs)

Corgié S.C., Duan X., Kahawong P., Edwards J., Walker L.P., Giannelis E.P., Cornell University, US

BNCs are self-assembled complexes of magnetic nanoparticles and free-radical producing enzymes, including peroxidases and other oxido-reductases that were shown to have higher activities than their free-enzyme counterparts (up to 30 folds). The BNCs biochemical properties [...]

The Effect of Lamination on Printed Silver Tracks for Plastic Circuits

Neeli M.R., Thiel D.V., Griffith University, AU

To combat the global e-waste crisis, there is an urgent need to develop a technology where environmental pollution from electronics, their manufacturing and product end of life is minimized through recycling and re-use. Circuits in [...]

Screening Level Cradle to Grave Life Cycle Assessment of a Conceptual Carbon Nanotube Field Emission Display Device

Upadhyayula V.K.K., USEPA/ORISE, US

The case study focuses on performing a screening level Life Cycle Assessment (LCA) of a hypothetical 15-inch CNT-FED device. The life cycle inventory (LCI) for the manufacture of the CNT-FED is based on values from [...]

Nano-enabled Green Technologies for Electronics and Energy Applications

Kaul A.B., National Science Foundation, US

Green electronics is largely driven by performance limitations of scaled Si-based CMOS due to the exceptionally high power dissipation arising in such devices at nanoscale dimensions. Novel architectures for computation are currently in consideration, which [...]

Improving the End-of-Life for Electronic Materials via Sustainable Recycling Methods

Korzenski M.B., ATMI, US

The production of electronic equipment such as computers, cell phones, TVs, etc. is one of the fastest growing global manufacturing activities. Unfortunately this results in substantial quantities of waste electric and electronic equipment (WEEE). In [...]

Polymer Matrix Nanocomposites via Forest Derived Nanomaterials

Schueneman G.T., Mintz E.A., Cross L., USDA Forest Service Forest Products Laboratory, US

Trees are a likely source of bioderived nanomaterials for polymer matrix composites (PMCs). All trees and plants utilize a nanoscale fiber as a building block in their reinforcing phase. The presence of nanofiber in cell [...]

Industrial Symbiosis Using Green Chemistry

Clark J., University of York, UK

The twin problems of resource depletion and growing amounts of waste can be solved through the valorization of waste into chemical, fuel and material products. While future “closed-loop” manufacturing should reduce waste through in-house use [...]