0
A fine question. The inventor of polyethylene had a dream in which he was surrounded by savages, and in their dance, they all linked arms. He remembered the dream in the morning, and from that point is was simple math and physics to calculate the temperature and pressure required to link the ethylene monomer.
He worked for ICI at Northwich, England.
This story aside, that is the general process for cross-linking, needs pressure, heat, and sometimes a catalyst.
[As an aside, another who solved a problem in a dream was Singer who placed the eye of the needle at the 'front end' of the needle.]
Wiki User
∙ 13y ago
Add your answer:
Earn +20 pts
What has the author James L Minor written?
James L. Minor has written: 'Pulp' -- subject(s): Wood-pulp 'Mass spectrometric method to determine the chain length of oligosaccharides attached to phenolic polymers by nonglycosidic linkages' -- subject(s): Oligosaccharides, Crosslinked polymers, Mass spectrometry
Does polythene melt when heated?
Because, it has no crosslinks therefore its molecules move more freely. On the other hand, some other polymers, such as Bakelite, are crosslinked and you cannot turn then into a liquid without breaking the covalent bond.
Anhydride with ethylene glycol versus phthalic anhydride with glycerol?
You get a polymer! When you have ethylene glycol react with phtalic anhydride in a basic sollution such as NaOH(aq) you'll get a linear polymer. When you have glycerol react with phtalic anhydride in the same way you'll get a crosslinked polymer. The important difference between glycerol and ethylene glycol is the amount of OH groups, and as we all know, the OH groups usually the group that reacts - particularly in the creation of polymers. So in this case your crosslinked polymer will be the glycerol as it has 3 OH groups. One in each end, allowing the molycule to connect with other molecules and create polymers, and one in the middle (connected to the 2nd Carbon Atom) allowing it to react with other polymers. I hope that sort of answers your question
What are Ghost crystals?
Ghost Crystals are crystals of crosslinked polyacrylamide.
How strong are plastic wraps -hypothesis?
Most common polymers have flexural strengths ranging from 3,000 to 20,000 psi (20.7 to 138.9 MPa or N/m2). Crosslinked polymers are more rigid and have a higher flexural strength than linear polymers.
Is Teflon a thermosetting polymer?
teflon is thermoplastic as it contains a linear chain and is not crosslinked..
Why do natural polymers not pose as much of an issue in landfills as synthetic polymers Natural polymers are cheap to recycle and synthetic polymers are expensive to recycle. Natural polymers are expe?
Natural polymers will degrade over time.... man-made polymers are not biodegradable - and need to be processed.
What is the purpose of polymers?
Polymers are used all around, plastics and rubber are polymers.
What is meant by water soluble polymers?
Water soluble polymers are polymers that will dissolve in water.
A large molecule synthesized from many monomers is called a what?
they are called polymers
Is glass a polymer material?
In polymer science, the word glass is a term for a particular state of matter having certain characteristic properties. To avoid confusion, we'll ignore that and assume you're asking about ordinary window glass. Technically, it could be considered an extremely highly crosslinked polymer, and it does share some properties with polymers, but it's not normally thought of as a polymer.
Modified natural polymers for drug delivery?
modified natural polymers are natural polymers which are altered in order to suit a particular purposeModified natural polymers are natural polymers which are altered in order to suit a particular purpose. Modified natural polymers are natural polymers which are altered in order to suit a particular purpose.
