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Involved With Nylon Synthesis We

It may be necessary to let the polymer cool some to get just the right combination of viscosity and strength. But it also ends up as other everyday things like rope, tents, and toothbrush bristles. These hydrogen bonds make crystals of nylon very strong, because they hold the nylon chains together very tightly. The experiment can be extended by having the same or different students use varying ratios of NaH to caprolactam.

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Nylons can also be made from a diamine and a diacid chloride: After several attempts, you will figure out just how much NaH to add and how long to heat it Note 3. With two students working together and one of them walking down the hallway trailing barely-visible fiber behind him, thin strands feet long have been made with this method. This onlyapplies to nylons used as thermoplastics, mind you. Just don't heat it longer, because your polymer will thermally degrade. Both step-growth polymerizations and chain-growth polymerizations are used to make nylons. Dissolve about 1 g of hexamethylene diamine in 25 ml of water in a ml beaker.




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As we all know, stoichiometric balance of amine and acid groups is absolutely critical when making nylons. Of course, this isn't enough. Then the carbonyl oxygen shares its newly regained electrons with the carbon atoms, regenerating the carbonyl double bond. Your fibers will be hard to draw and they will also be brittle, so don't let it cook for too long! Just don't heat it longer, because your polymer will thermally degrade. It splits off H 2 O, and generates the amide-containing dimer. One will donate a proton to a the carbonyl oxygen of another.


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Nylon 6,6 was discovered first. Because the first one uses two different types of monomers, one which has two amine groups and one with two acid group, we call this an AA-BB system. The NaH must be kept away from water.


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