Chapter 9 |
| 9.2 Consider This: Sporty Polymers
(page 338)
Choose a favorite outdoor activity - on the land, in the sea or even in the
air. Do a |
| 9.4 Consider This: Personal Polymers
(page 343) A Teflon ear bone, fallopian tube, or heart valve? A Gore-Tex facial implant? hernia repair? Some polymers are bio-compatible and are now used to replace or repair body parts. List four properties that would be desirable for polymers used within the human body.
Other polymers may be used outside your body - but in close contact. For
example, no surgeon is needed for you to use your contact lenses - you can insert,
remove, clean, and store them yourself. From which plastics are contact
lenses made? What properties are desirable in these plastics? Either a
call to your ophthalmologist or a search on the worldwide web will net you
some answers. For the latter, a |
| 9.12 Consider This: Polypropylene - A Tough Plastic
(page 354)
Polypropylene, one of the "Big Six," is used to construct a number of items
in which toughness counts. It may not be as familiar to you as polyethylene
and PET, because many polypropylene items are not marked with a recycling symbol
(and are not collected at curbside). Figure 9.11 shows that polypropylene has
numerous uses, but does not provide many specifics. Find these out for
yourself. |
| 9.23 Consider This: Landfill Liners
(page 363)
A search on the worldwide web for "landfills" can bring up high quality
information about garbage. If you browse through these sites, you will see that
there is a fair amount of controversy about the plastic materials that can
be used to construct the liner. |
| 9.24 Consider This: Plastic Cars
(page 363)
A considerable number of different polymers used in automobiles are noted in Table 9.2. Pick one of the polymers in the table that is not discussed in this chapter and |
| 9.26 Consider This: Polymers in Your Computer
(page 363)
Twenty years ago, recycling personal computers was not a concern because there weren't enough of them around to matter. These days, given
the number of monitors, keyboards and mouses in circulation, there is good
reason to keep these out of the landfill.
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