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I just want to say one word to you —just one word— ‘plastics.’ Advice to Dustin Hoffman’s character in The Graduate
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What are plastics? Materials composed of large molecules (called polymers) which are synthetically made or modified –Most are made from oil
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What are plastics used for? Work with your neighbor and try to identify as many plastic products in this room as you can in the next 60 seconds
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Automobile –Weight (mileage) Aviation –767, 787 –Voyager, Space Ship One Everywhere What are plastics used for?
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Range of Products (defined by government’s NAICS* codes) Plastics Bags Plastic Packaging Film and Sheet Non-packaging Film and Sheet Plastics Profile Shapes Plastics Pipe & Pipe Fittings Laminated Plate, Sheet and Shape Polystyrene Foam Products Urethane and Other Foam Products Plastic Bottles Plastic Plumbing Fixtures Resilient Floor Covering Plastics Products, Not Classified Elsewhere (Source: Probe Economics, Inc. 2004) * North American Industry Classification System
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Plastics products improve our daily lives and have made vast improvements in areas such as: Medicine - helping us all live longer, healthier lives Electronics - information, communication, and entertainment Building and Construction - durability, aesthetics, and high performance Transportation - Automotive, Aerospace, and Space Exploration Personal protection - children, athletes, police, and firefighters Innovative packaging - freshness, storage stability, and protection from bacteria Recyclability and reuse (SPI* created the international recycling symbols/numbers to facilitate recycling) Plastics * Society of the Plastics Industry
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They are inexpensive to produce, and easy to mold, cast, or machine Their properties can be expanded even further in composites with other materials Plastics
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Benefits of Plastics Case Study: Transportation During the oil crisis in the 70’s, automakers found that plastics made cars more energy efficient by reducing weight Plastics began finding their way into automobile components (bumpers, fenders, doors, etc.) Plastics were also used for their Durability Corrosion Resistance Toughness Resiliency Lightweight
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Benefits of Plastics Transportation cont… Plastics reduced the weight of the average passenger car built in 1988 by 145 pounds That saves millions of gallons of gas each year and will save the energy equivalent of 21 million barrels of oil over the average lifetime of those cars
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History of Polymers Date 1868 1909 1919 1927 1929 1936 1938 1939 Material Cellulose Nitrate Phenol-Formaldehyde Casein Cellulose Acetate Polyvinyl Chloride Urea-Formaldehyde Acrylic Polyvinyl Acetate Polystyrene or Styrene Nylon (Polyamide) Polyvinyl Butyrate Polyvinylidene Chloride Melamine-Formaldehyde Example Use Figurines Electrical equipment Beauty accessories Cellophane package wrapping Pipe, Synthetic Leather Lighting fixtures, Plywood glue Brush backs, displays Synthetic flooring Disposable utensils Hosiery Safety glass interlayer Saran wrap Countertops, Cabinets
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History of Polymers Date 1942 1943 1947 1948 1954 1956 1957 1964 Material Polyester Polyethylene Fluorocarbon Silicone Epoxy Acrylonitrile-Butadiene-Styrene Polyurethane or Urethane Acetal Polypropylene Polycarbonate Ionomer Polyimide Example Use Clothing, Boat hulls Milk Jugs Industrial gaskets, Non-stick liners Gaskets, Tubing, Utensils Glues Luggage Foam cushions, Shoe soles, Wheels Automotive parts, Toilet parts Living hinges, Safety helmets Water bottles, Eye protection Golf balls, Skin packages Gears
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Plastics is a complex industry Processors – (four main processing methods) Injection Molding Extrusion Blow Molding Thermoforming Equipment Suppliers Raw Material Suppliers
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Comparison with Other Industries in the United States Plastics industry is the nation’s 4 th largest manufacturing industry (shipments) : 1. Motor Vehicles and Equipment 2. Petroleum Refining 3. Electronic Components and Accessories 4. Plastics (Source: Probe Economics, Inc. 2004)
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Salaries in the plastics industry
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Environmental Issues
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Source Reduction Replacing bulky/heavy products with properly engineered, lighter, lower volume per part products “In a comparison of the two types of grocery bags, Franklin Associates concluded that the manufacture of plastic bags produced considerably less air pollution, water borne wastes, and industrial solid-waste than the manufacture of paper. Because plastic bags are lighter, they also produce less post-consumer solid waste, taking up less space in landfills. Researchers found that plastic sacks have these advantages even when grocery store clerks pack less in each bag, thereby using 1.5 or 2 times as many plastic bags to pack the same groceries as paper.” Brower, Michael & Leon, Warren (1999) The Consumer's Guide to Effective Environmental Choices - Practical Advice from the Union of Concerned Scientists, Three Rivers Press, New York, p. 132-133.
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Comparison of plastics and paper
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Recycling Collection Handling/Sorting Reclamation/Cleaning End uses
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Degradation Plastics that can break down into smaller molecules by natural means are degradable Degraded byproducts are sometimes more dangerous than original product
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Waste Left to Degrade Volume of waste found on Ohio’s roadside Weight of waste found on Ohio’s roadside “the total annual estimated roadside litter in Ohio for all road types and interchanges is 11,772 TONS!” http://www.dnr.state.oh.us/recycling/news/040716litterstudy.htm
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Landfill Waste
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Incineration British Thermal Units (BTU) is the standard for measuring heat generated from incineration Particulate Parts per Million (PPM) is one standard unit of measure to determine pollution when burning MATERIALFUEL VALUE(BTUs) Polyethylene19,900 Polypropylene19,850 Newspaper8,000 Fuel Oil20,900 Source: Data from Council on Plastics and Packaging in the Environment Waste to Energy Fact Sheet 1989 Air quality standards in the US are determined by the EPA and in accordance with international treaties. Any kind of incinerator must comply with these regulations.
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Total Product Life Cycle Energy Requirements to manufacture a grocery bag Paper BagPlastic Bag Energy required for 0 recycle 16.29.8 Energy required for 100 recycle 9.87.0
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Future Rational analysis of each product type and its own particular use Be open to suggestions from environmental lobbyists Put aside emotional issues in favor of reasoned positions based on scientific principles
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Critical Thinking— Recognizing Fallacies A fallacy is a deceptive argument; its conclusion is not well supported by its premises.
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Appeal to Popularity Ford makes the best automobile in America; after all, more people drive Fords than any other American car.
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False Cause I placed the quartz crystal on my forehead, and in five minutes my headache was gone. The crystal made my headache go away.
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Appeal to Emotion In a commercial for Michelin tires, a picture of a baby is shown with the words “because so much is riding on your tires.”
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Types of fallacies Appeal to popularity False cause Appeal to ignorance Hasty generalization Limited choice Appeal to emotion Personal attack Circular reasoning Diversion
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Environmental Project
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There is a current debate regarding the use of plastic versus paper products and their effects on the environment. For this report, you will need to research the issues on both sides of this debate and prepare a written report of 5-6 pages in which you discuss the pros and cons of both paper and plastic products.
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