CHAPTER-5 POLYMERIZATION SEMESTER -1









LDPE is used for manufacturing products such as:
• Plastic bags
• Trays, containers, snap-on lids
• Corrosion-resistant wo...
 LDPE is not often recycled
through curbside programs,
but products can be dropped
off at a designated location
for recycli...


HDPE is collected through most curbside
recycling programs. It is non-biodegradable
and can take centuries to decompose, s...





Low-density polyethylene (LDPE) is known as a thermoplastic, or thermosoftening
plastic. It is not reactive at room temper...



HDPE is used for manufacturing
products such as:
• Plastic bottles
• Plastic lumber
• Hard hats
• Food storage containers
...











Image result for thermoplastic and thermosetting plastic
Image result for thermoplastic and thermosetting plastic





   



















Questions:

1.Write the balanced chemical equation for the formation of polyethene and polypropene.
2.What are the differences between thermoplastic and thermosetting plastic?







































































                






       



Questions:

1.Write the balanced chemical equation for the formation of Nylon and polyester (Terylene).
2.What are the differences between HDPE and LDPE?











































http://scienceps.blogspot.com/p/biology_9.html

For further informations:

http://www.stephensinjectionmoulding.co.uk/thermoplastics/
http://www.bbc.co.uk/schools/gcsebitesize/design/resistantmaterials/materialsmaterialsrev3.shtml

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