Plastic and Chemistry?
How does Plastic relate to at least 3 topics in Chemistry in the listed below:
Structure & properties
Energy Changes and Rates of Reaction
Chemical Systems and Equilibrium
An explanation would help too
How it relates to Processing of plastics, plastic itself, etc.
Also there are actually many types of Plastics, which type of plastic could explain more of these topics?
- IggyLv 76 years agoFavorite Answer
Plastics relate to structure and properties of chemicals since they are macromolecules. They form very large scale molecules whose physical properties are defined by their chain length. These help define properties like their solidity and plasticity, ability to be shaped and moulded,
They relate to organic chemistry due to a polymerisation reaction, forming from organic monomers that contain a "unsaturated" double bond.
Energy changes and rates of reaction are involved since typically a polymerisation reaction will occur spontaneously forming the polymer. However, most polymerisation reactions are not favoured naturally but require the presence of a catalyst to favour the formation of the polymer. Once create most polymers are very stable. Rate of reaction is usually defined from the monomer concentration, temperature, but primarily on the presence of a catalyst.
The processing of plastics will be determined by the structure and properties. Also the properties and chemistry of the plastic will determine whether the process leads to degradation of the plastic. Similarly the rate of reaction and type of formation of the plastic will effect the sorts of processing that can be applied.
If you wanted to study a couple of plastics, I'd chose polyester (chain growth synthesis) and polyethylene (step growth synthesis).
Hopefully this is enough to get you started.
Enjoy :)Source(s): en.wikipedia.org/wiki/Polymer
- Anonymous5 years ago
difficult issue. try searching in yahoo and bing. that can help!