Designer Products

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Designer Products
(Edexcel)
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Smart Materials
Smart materials are materials that are able to
change according to what is happening to them.
Some examples
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Designed Materials
Some designed materials can be considered similar
to smart materials. Find out the following
information
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Gore-Tex
Gore-tex is a material made from an expanded form
of the polymer PTFE.
Sweat
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Designing New Products
The process
1) Find a use
2) Match properties to the use
3) Find a material with those properties
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Nanotechnology
Task To find out what nanotechnology is and
what it is used for

• What is nanotechnology?
• Define the terms nanoparticle and nanocomposite
• Gives some examples of its uses
• Describe some of the future uses of this
  technology
• Describe some of the ethical concerns over this
  technology

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Intelligent packaging
Intelligent packaging is packaging that has
special properties. For example
Bullseye labels
Water absorption
Correct temperature
High temperature
Inedible
Oxygen scavengers
Oxygen indicators
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Fermentation
Under the right conditions, yeast (an enzyme)
will convert sugar into ethanol (alcohol) and
carbon dioxide
The alcohol from this process is used in making
drinks and the carbon dioxide can be used to make
bread rise.
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The effects of alcohol
In men, inability to get an erection, a shrinking
penis and a reduced sperm count
A deficiency in vitamin B, causing skin damage
and depression
Liver damage
Effects of alcohol
Increased risk of cancer
Decreased levels of iron, leading to anaemia
Stomach ulcers
Destruction of brain cells
Increased risk of heart disease and high blood
pressure
In women, dirsuption to the menstrual cycle
leading to low birth weight
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Emulsions
Whats an emulsion?
Its a mixture of oil and water, like in salad
dressing
Paint is an emulsion. Other examples
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Emulsifiers
An emulsifier is an additive that will stop oil
and water from seperating, like in mayonnaise.
How they work
Im an emulsifier Ill sort this out with my
hydrophobic end and my hydrophilic end!
I dont want to mix with you!
Water
Oil
The water and oil drops become coated and
insulated from one another, which prevents them
from seperating.
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Uses of emulsifiers in food

• Emulsifiers are used
• In bread, to stop large _____ developing when it
  bakes
• In low fat spreads, to allow the oil and water to
  be _____
• In ice cream and spray cream, to ______ the foam
• In sponge cakes, to make tiny pockets of ____
• In chocolate, to stop melted chocolate forming
  _______

Words crystals, air, holes, mixed, stabilise