1 / 11

POLYPROPYLENE!

POLYPROPYLENE!. One Popular Polymer!. What’s so great about POLYPROPYLENE?. High Melting Point (dishwasher safe!) Intermediate crystallinity: tough without being brittle High resistance to fatigue (living hinge) Chemically Inert CHEAP to MAKE!!!. Polypropylene comes from Propylene!.

bonner
Download Presentation

POLYPROPYLENE!

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. POLYPROPYLENE! One Popular Polymer!

  2. What’s so great about POLYPROPYLENE? • High Melting Point (dishwasher safe!) • Intermediate crystallinity: tough without being brittle • High resistance to fatigue (living hinge) • Chemically Inert • CHEAP to MAKE!!!

  3. Polypropylene comes from Propylene!

  4. Synthesis 1. Zeigler-Natta polymerization: TiCl3 + Al(C2H5)2Cl, or TiCl4 + Al(C2H5)3

  5. Synthesis 2) Kaminsky Catalysts: Metallocene A metallocene is a positively charged metal ion sandwiched between two negatively charged cyclopentadienyl anions.

  6. The era of Polypropylene & Polyethylene Courtesy of Mr. Hogan and Mr. Banks

  7. Polypropylene is Useful. . .

  8. How much polypropylene is out there? PP generation in 1996 (tons) Source: EPA, Characterization of Municipal Solid Waste in the United States: 1997 Update * Includes plastics in disposable diapers, clothing, footwear, etc. ** Other plastics packaging includes coatings, closures, caps, trays, shapes, etc.

  9. Longevity: ? 100s of years “Plastics numbered 3-7 have very limited markets, and the cost to separate and ship these small volume plastics is in excess of $12,000 per month.” - Madison pride recycling program Madison, WI The only way to get rid of it is to burn it. Roughly 25,000 tons were recycled in 1996 (that’s 1%)

  10. Bibliography • “Polypropylene”, Wikipedia. http://en.wikipedia.org/wiki/Polypropylene, 11/1/05 • “Plastics Recycling Information Sheet”, Waste Online. http://www.wasteonline.org.uk/resources/InformationSheets/Plastics.htm, 11/7/05 • “Plastics Recycling” and “Polypropylene PP”, British Plastics Federation. http://www.bpf.co.uk/bpfindustry/process_plastics_recycling.cfm and http://www.bpf.co.uk/bpfindustry/plastics_materials_polypropylene_PP.cfm, 11/7/05 • “Polypropylene”, Macrogalleria. http://www.pslc.ws/mactest/pp.htm 11/1/05 • “Polypropylene PP”, Bird Box Company, http://www.birdboxcompany.com/en/pp_data.htm, 11/7/05 • “Recycling Symbols (US)”, Earth Odessy LLC. http://www.earthodyssey.com/symbols.html 11/7/05 • “Stonyfield Farm and Environmental Packaging”, Stonyfield Farm. http://www.stonyfield.com/EarthActions/EnvironmentalPackaging.cfm., 11/7/05 • “UV Damage to Polymers”, UN Environment Program. http://www.gcrio.org/UNEP1998/UNEP98p62.htmlhttp://www.p2pays.org/ref/02/0162230.pdf 11/7/05 • “Chemical of the Week: Polymers” Science is Fun. http://scifun.chem.wisc.edu/chemweek/POLYMERS/Polymers.html, 11/1/05 • “Plastic: PP (#5) Commodity Profile of market Assessment”, 1998. North Carolina Department of Environment and Natural Resources/ Division of Pollution Prevention and Environmental Assistance.

More Related