Polyethylene teraphthalate

Amaranth T. versicolor ATCC 20869 Wheat straw, jute, hemp, maple woodchips, nylon, polyethylene teraphthalate fibers [44]... 

Figure 8.18 shows spread rates measured for thin films ( 0.2 mm) of polyethylene teraphthalate (PET) and paper laid on fiberglass at various orientations spreading up and down [19]. The results can partly be explained by relating the momentum to buoyancy as... 

The radius of the notch is quite important, particularly for plastics. For example, polyvinyl chloride (PVC) is a notch-sensitive material. If the notch is blunt (2-mm radius), the impact strength is higher than that for ABS. If the notch is sharp (0.25-mm radius), the impact strength of PVC is lower than that for ABS. Other polymers that are notch brittle are high-density polyethylene (HDPE), polypropylene (PP), polyethylene teraphthalate (PET), dry polyamides (PAs), and acetals. 

Polyethylene and polyisobutylene Polyethylene and polypropylene (5% PE in PP) Polycarbonate and polyethylene teraphthalate... 

Industrial or synthetic polymers find extensive use in modern day society. They are many in number, polyvinyl chloride (PVC) polyamides (Nylon), polyethylene teraphthalate (PET), polystyrene and polyolefins, to name but a few. Polymers are without exception very complex compounds, capable of manifesting themselves in many shapes and forms. They can exist as viscous liquids, powders, coloured granules, cast or extruded sheet, transparent or translucent film, formulated (in some cases in excess of ten different additives may be added) or unformulated. Hence they can present a very daunting task to the analyst or polymer chemist wishing to fully characterise such materials. 

Recycling there is a reasonable amount of evidence of a positive approach to recycling. The Kingsport, USA site recycled 1780 tons of cardboard, paper and plastic in 1997 and 1500 tons in 1998. In Mexico, Eastman s involvement in community-based initiatives has resulted in recycling 170 tons of polyethylene teraphthalate. There is a similar scheme in Argentina. 

So we started experimenting with new materials. Finally, another breakthrough came. Frank Gay, a research chemist at Du Font s Experimental Station in Wilmington, Delaware, suggested that we use a material we hadn t considered polyethylene teraphthalate or PET resin. PET hadn t been tried before because we did not believe it could be oriented in the form of thick-walled shaped articles. 

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