Nylon Synthesis

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Nylon Synthesis

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Harvard Natural Sciences Lecture Demonstrations

3 жыл бұрын

A classic science demonstration of two-component polymerization, nylon 66 (also known as "nylon 6,6") is pulled from the interface of two solutions: Hexamethyldiamine in 0.5M sodium hydroxide solution is the lower layer, and adipoyl chloride in cyclohexane is the upper layer. The two compounds react at the interface, making a polymer that can be pulled out as a thread that keeps forming until one or both of the solutions are depleted. Check out en.wikipedia.o... for the creative-and ultimately tragic-Harvard connection.

Пікірлер: 31

@paulbin 3 жыл бұрын

Some time ago in lecture hall E, a quite honourable gentleman tried his hardest to slapp'nfold wet flour into a firm dough. Its a relief to see that since then lecture hall E turned into a clean and useable space again.

@NatSciDemos 3 жыл бұрын

We actually filmed in Hall B, not sure why Daniel called it "Hall E"?

@paulbin 3 жыл бұрын

@@NatSciDemos so the man is still slappin'......?

@DanielRosenberg 3 жыл бұрын

@@paulbin Still slappin'. Science and Cooking will be meeting this fall.

@annisarahimahbasri666 3 жыл бұрын

2:27 this remind me abt junior high, when i tried to pull a string out of correction fluid. Very satisfying!

@user-em6hr1nm7j 11 ай бұрын

O Jesus you are wonderful....... such a wonderful experiment....💫👍👀

@pateardealul2048 3 жыл бұрын

Awesome video!

@NatSciDemos 3 жыл бұрын

Thanks!

@vibeflyfishing2847 2 жыл бұрын

Great video. As a fly fishing guide, nylon is near and dear to my heart… my challenge right now is to change its properties to make it more elastic without memory… I’ve achieved 25% stretch with just boiling water and salt, but the coils are still there and the nylon monofilament retains memory when it cools… any thoughts on how to chemically and permanently remove memory from nylon while preserving knot strength?

@Kathend15 2 жыл бұрын

Have you made any progress in this pursuit? Would you be willing to share (via email?) What you've found about nylon thus far? I am researching it for product development.

@pedrononino4223 3 жыл бұрын

amazing!!!!!

@mitchellwalther 3 жыл бұрын

Cool stuff

@Jomonoupapjanmbliyew 3 жыл бұрын

That's what i get excited for

@anubhavwithsoni 3 жыл бұрын

Sahi hai 👍🙏🙏

@SinusPrimus 4 ай бұрын

Is this the same for classical guitar strings? Greetz from 🇨🇭

@trevorstrutt1 Жыл бұрын

This is what I make all day at invista canada

@king0vdarkness 2 жыл бұрын

flixborough disaster brought me here... please may I ask what the chemical equation is? The one I have is: C6H12 + O2 -> (CH2)5 CO + H20 ... But this only accounts for the cyclohexanone not the cyclohexanol... so I'm not sure it's correct

@Muonium1 3 жыл бұрын

I don't understand what would've been so difficult about washing the final product and remelting for application in commercially viable stuff?

@DanielRosenberg 3 жыл бұрын

Because it is a condensation reaction, where the by-product is water (which interferes with the reaction), the polymerization as shown in the video doesn't make a very long chain polymer. Wallace Carothers figured out that distilling off the water as the reaction happens makes a longer thus stronger polymer.

@Muonium1 3 жыл бұрын

@@DanielRosenberg ah I c, neat

@tamaseduard5145 3 жыл бұрын

👍👍👍💖👍👍👍

@pinaky_AnVikSiki 3 жыл бұрын

If it's strength r good it's can be use as homemade home use...

@luismerchan9140 3 жыл бұрын

Textile

@LearnWithFardin 3 жыл бұрын

Wow🇧🇩❤

@user-ev7er3wz3y 2 жыл бұрын

How much is this strong?

@krishuff6735 3 жыл бұрын

Spider man secret 🔥🔥🔥🔥

@Hellefleur 3 жыл бұрын

Spiderman's Web Fluid Version 0.5

@miguelmouta5372 2 жыл бұрын

The question is: Why are you using mask?

@thomasdamico2419 10 ай бұрын

How can we disassemble those polymeric chains in old nylon and polyester to make a new product? We make American flags with nylon and polyester. Currently the proper way of retiring American flags is by burning it which is ridiculous. We are looking for a better way. 90 million pounds of nylon flags are retired each year.