Chemistry. What Are Three Factors That Need To Be Controlled In The Production Of Polyethylene?
Chemistry. Please Say What They Are And Why They Have To Be Controlled. Thanks! :D All Help Appreciated And Don't Be Afraid To Elaborate!! :P I Ag
Chemistry : What Are Three Factors That Need To Be Controlled In The Production Of Polyethylene
Please say what they are and why they have to be controlled. Thanks! :D all help appreciated and don't be afraid to elaborate!! :P ~~~ popcorn ~~~
Best Answer To Chemistry Question
I agree with Thomas H, but also add temperature. The amount of pressure, temperature, and the catalyst used to create the polyethylene makes the difference between high density polyethylene and low density polyethylene. Low density has chain branching, and is this less dense - you can't get the polymer strings to sit close enough that it's dense, whilst high density doesn't have chain branching, and it thus stronger and less stretchy. The PE they used to make was low density, with high pressure and temperature, but they learnt how to make high density, using a catalyst, and something called the ziegler-natta process.
All Answers To Chemistry Questions
Answer 1The factors are: 1. High pressure 2. Presence of organic peroxides, HF etc.
Answer 2I agree with Thomas H, but also add temperature. The amount of pressure, temperature, and the catalyst used to create the polyethylene makes the difference between high density polyethylene and low density polyethylene. Low density has chain branching, and is this less dense - you can't get the polymer strings to sit close enough that it's dense, whilst high density doesn't have chain branching, and it thus stronger and less stretchy. The PE they used to make was low density, with high pressure and temperature, but they learnt how to make high density, using a catalyst, and something called the ziegler-natta process.
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