Smart materials
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6 Terms
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What is a smart material?
A material whose properties change in environment but it is easily changed back to original form
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Shape memory polymers
Polymers which return to original shape when heated
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Hydrogels/Polymer gels
Absorbent polymer chains which can absorb or expel water up to 1000 times it’s volume - used in nappies
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Thermochromic materials
Changes colour when temperature changes
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Photochromic materials
Change colour when light intensity changes
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Shape memory alloys
When bent out of shape it will return to original shape when heated
Note 
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