> chemistry > divers > benzoyl-peroxide-free-radical-polymerization-of-methyl-acrylate-chemicalforce

Benzoyl peroxide! Free-Radical polymerization!

ChemicalForce - 2020-07-27

Get ready to look at this polymerization for a long time :D


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0:00 Dry benzoyl peroxide demonstration
0:23 Dry benzoyl peroxide explosion
0:50 Benzoyl peroxide melting
1:56 Slightle wet benzoyl peroxide explosion
2:15 Сombustion of commercially available benzoyl peroxide
2:53 Handbook of reactive chemical hazards
3:04 Benzoyl peroxide + aniline

3:30 Benzoyl peroxide + phenylhydrazine
4:02 Benzoyl peroxide + triethylamine 

4:32 Methyl acrylate demonstration
5:10 Removal of the stabilizer with alkali
6:12 Adding benzoyl peroxide to methyl acrylate
6:37 Heating for initiation 

6:56 Free-Radical polymerization!
7:40 Free-Radical polymerization mechanism
8:46 Acceleration of polymerization at a later stage
9:22 Photoinduced radical polymerization!
11:33 Taking out the polymer from the test tube
11:54 Demonstration of polymethyl acrylate

12:52 Destruction of polymethyl acrylate
13:24 Demonstration of low molecular weight polymers of polymethyl acrylate 

14:56 Words of gratitude for my patrons :-*
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ChemicalForce - 2020-07-27

Another great video 💯💯. Awesome work!!! Keep it up!!! :DDD

Lukas Sorowka - 2020-08-13

@Levi Ben i dont think so. Thats extremely unstable

KW PC UNOFFICIAL - 2020-08-16

I've find out really nice way to make stable and dry caesium ozonide, you only need some caesium (ozone flow or liquid ozone but this reaction is much violent) and liquid ammonia, dissolve some caesium in liquid ammonia to make really concentrated solution and then add or bubble ozone, this reaction looks amazing and beautiful crystals of caesium ozonide is formed, pls make this reaction on your channel cuz it's amazing

KW PC UNOFFICIAL - 2020-08-16

Also caesium ozonide is stupendously powerful oxidizer so a lot of fun with it

P EDUARD CHRISTIAN - 2020-08-31

Can you make a video a about anhydrous hcl in ether?

Christopher Leubner - 2021-11-15

Nice to see one with organic chemistry in it 🤓

Danielle Spargo - 2020-07-27

8:00 i absolutely love that you show the reactions and where the electrons are going and how the bonds change!!! i love this! you should do this on all your videos! us organic chemists love it!!!

Danielle Spargo - 2020-09-05

SublimeSparo

yeah, our generation got pretty screwed. even in the usa when college was never free, the right wing politicans who are working the absolute hardest against student debt reform are the same ones who went to prestigious universities for 4000$, after being adjusted for inflation

that means 4000$ in today's money. while he doesn't blink an eye at someone dropping 120,000$ on a similar degree at a mediocre state university. they want this wealth gap to increase, and they know they won't still be around when late stage capitalism collapses in on itself anyway, so they just want as much money as power as they can get now, for their last few years on earth. we should cap the age of congress members at age 60 or even 55. enough of these 75 year olds who didn't get internet until their 60's making rules about how the internet should function, or how the world should work. they don't know our world at all. they know and internalize jim crow erra policies cuse that's when they grew up.

Azice - 2020-12-24

Yeah! It was super satisfying! I wish every video had this

OrbitalSaucer - 2021-02-03

I never saw such a great demonstration of reactivity in my entire chemistry degree. Why is no one teaching with these types of animations?

unknow unknown - 2021-02-13

I Don't care organic or inorganic chemistry is chemistry

sleepful - 2021-05-27

i loved that too

Brian Streufert - 2020-07-27

8:39 This animation of the polymerization process was REALLY awesome!!!! Thank you!!!

Josh Layton - 2020-07-27

The animation of the polymerization mechanism is A+. As someone who's only taken general chemistry - that's the kind of stuff that really helps get a deeper understanding of organic chemistry, because otherwise that kind of visualization may only come from a classroom.

Great video

ChemicalForce - 2020-08-05

Thanks!

Sneekyb - 2021-08-03

@ChemicalForce heavy metal chemist here, i absolutely love your videos lol

Space Core - 2020-07-27

Working in the plastics industry, i'm very glad to see some of my chemistry on this usually more exotic channel !

Ilya Dorokhov - 2020-07-27

This more educational format with reaction mechanisms and reaction schemes is really good.

science_and_anonymous - 2020-07-27

Finally, I can clear my acne and burn my face with an organic peroxide

SublimeSparo - 2020-09-05

@Alexander Reiter is it effective?

Joonch Scroonch - 2020-09-28

Mine smells like bleach and I got it in my eyes once 🥵

caspar valentine - 2021-03-11

you can't have face acne if you don't have a face

yi meizi - 2021-06-10

@SublimeSparo It’s chemotherapy for your face

Pietro Tettamanti - 2021-12-20

@SublimeSparo yes it is, and it doesn't burn your face

Brandon Smith - 2020-07-27

Watching your channel I’ve finally understand chemistry. Thank you so much I could never understand in high school but you explain it so great 😄

ChemicalForce - 2020-08-05

A lifetime is not enough to understand chemistry (◕‿◕)

pNpTransistorNpN - 2020-07-27

This was cool, I've worked with cyanoacrylates in a lab before and they can be fun to mess around with. Looks weird having to actually add an initiator now

fardreaming - 2021-07-22

Brilliant demo, as always. Loved seeing the animation of how the bonds break and form the polymer chain, even though I don't really understand chemistry.

Holy Robot - 2021-01-23

As someone who went through their schooling and was on the receiving end of abysmal chemistry curriculum, your videos always teach me so much, even about basic parts of this great art!

Garry McDougall - 2020-09-03

Excellent videos, I love the camera work and clear explanations - thank you!

ChemicalForce - 2020-09-05

thank you!

user255 - 2020-07-27

Very nice!
Any idea what is the reaction between the peroxide and amines?

SouLTricK - 2020-07-27

WOW that reaction process visualization was super! great way to learn something.
Best chanel thanks man!

Kaeza klimber - 2020-07-28

Great video, guy!
Its very interesting how much is this compound stable even as a peroxide, probably due to delocalization and other factors as well

btw love how the TEA gets of flying spining xD

spiderdude2099 - 2021-10-28

I love thinking about how wild the early days of free radical research and carbocation research must have been. Like….you can easily set up experiments where you control all the variables and starting conditions to the point where the ONLY way the reaction could be occurring is if a species like a free radical or carbocation is generated. That must have been exciting seeing the reaction proceed in a way that heavily gave credence to this new mechanism that you were proposing. Carbocations especially must have been very mystifying in the beginning cuz you have these chemicals with aromatic rings that do not absorb visible light, but when placed in an environment that favors carbocation production, a usually vivid color is produced. There would be NO explanation for this color change until you looked at the resonance structure and saw that a positively charged carbon species could perfectly emit the wavelength of visible light you are witnessing due to its now delocalized electrons and resonance structures. Like, you could actually calculate the exact wavelength that particular ion should reflect and then you can see it in your flask when the reaction occurs. So satisfying.

Josh St. Louis - 2020-07-27

Nice animation for the polymerization process 👍 much better than textbook pictures.

ChiralSymmetry - 2020-08-02

Isn't this essentially the chemical reaction of super-glues (instant adhesives/cyanoacrylate) ?
If so, probably worth explaining super-glues? :)

sriram sankar - 2020-08-01

I have read all about this in theory (polymer sciences) never got to see it. Wow this is just too beautiful ❤️🔥

All Love - 2021-08-08

I am pleased to see your channel rocketing up successfully. This stuff might make a really good solid-state rocket booster

Decoy - 2020-08-05

Hey! Great video! Please, can you make a video about interhalogens next time? About some of them, but not ICl, BrCl. That would be awesome! Thank You!

MEGAMIGA - 2020-12-22

What a cool reaction! I wish I understood chemistry in order to be even more amazed by the whole process...

Couchintheclouds - 2020-07-28

Love the graphical explanation of the reactions

Dhananjay Chakraborty - 2020-07-28

Wow.. Amazing decomposition... Those methyl acrylate polymers were mind blowing..... That's why this channel is my most favorite channel.... Thank you very much

Pooja Digi Prints - 2020-07-31

Are u also associated with making acrylic sheets?

Dhananjay Chakraborty - 2020-07-31

@Pooja Digi Prints no

Lucas FORTIER - 2020-09-16

Man, I was teaching some photochemistry today.
I actually was using your blue LED's video to show the students.

Thanks for your videos <3

Dominik Groß - 2020-09-09

I'd love to see some more hypergolic reactions for rocket use. You may find some inspiration in the book Ignition.

Tim Mulm ll - 2020-07-27

Very nice video!
Will you show us some reactions with persulfates ? Or maybe with perbromates?

ChemicalForce - 2020-08-05

Yes, it's on the to-do list!

Copper Chopper - 2020-07-27

Good video as always but this thing in its pure form by far is the one of the most of not the most dangerous acne remover/medication
tbh

Nigel Johnson - 2020-07-27

At one time I believe the film industry used large quantities of benzoyl peroxide for simulating large and dramatic explosions, it being much safer to handle than petrol. I watch a video on film special effects that showed plastics bags of the stuff, being loaded into a car that was to be blown up.

Anon - 2020-07-27

The animated mechanism was a very good touch. This is an excellent video

Baptiste Gasch - 2020-07-27

Video génial merci pour se très bon contenu

pranjal verma - 2020-08-11

Very interesting video, you should add these animation illustrations in more of your videos..

TechiJunior [ Chemistry & Physics ] - 2020-07-27

Another great Video like all your Videos! Awesome! Keep up the great work!

DaKermitFrog - 2020-08-10

Can you try reactions with "heavy water" or inside it? Reactions inside of water/mineral oil?

ian cho - 2020-09-04

It is mind boggling a channel this good is at the size it is

Nick Void - 2020-07-27

CF: handles dry peroxide
Everyone in the lab: Imma head out

Californium-252 - 2020-07-29

Everyone: Oh god no, not that goddamned dry peroxide, no, no, NO, NOOOO, NOOOO- (explosion from the decomposition of benzoyl peroxide)

Emme Pombär - 2020-09-04

@Californium-252 no, no, no, NO? Nitrous oxide much? :-D

Neil Melville - 2020-12-20

used to work for a company that made shampoo for dogs with dermatitis containing benzoyl peroxide which was supplied water damped. During testing, the water content was determined by Karl Fischer titration. The KF titrator was broken. Walked into the lab and noticed a weird smell, asked what it was to be told that they were doing a loss on drying in an oven on benzoyl peroxide. Told them to get it out of the oven NOW!!!!

Californium-252 - 2021-03-12

@Emme Pombär Nitric oxide*

Marty McFly - 2021-05-16

Everyone: Oh, great, another one of these bullshit comments. Way to be creative, bruv.

Scott Wang - 2020-07-27

A little foray into organic.


edit: btw, the mechanism animation is really badass!!!

DukeOfEarle88 - 2020-08-14

The polymerization was really pretty. The triethylamine was also a really cool rxn!

spiderdude2099 - 2020-12-20

I wonder what it would look like if the methyl acrylate and benzoyl peroxide solution was first thinly spread out over a glass pane or flat surface and then hit with the UV light?

Li Li - 2020-08-04

My dad worked at a place that made PMMA fiber optics. He'd come home smelling like a chemistry set! Then there was this one incident where they lost power and had to find a working freezer to store the initiator they were using (it had to stay cold to keep from exploding). Guess who's freezer it ended up in. My mom was so pissed that he'd bring something so dangerous into our house (actuall, our garage, but still).

Simon Küttner - 2020-07-27

Great video! Where do you get these chemicals 😳

Scrap Scientist - 2020-07-27

Obviously from local chemical store

Oit Thegroit - 2020-08-19

Hey, could you try reactions with various exotic carbon oxides, such as mellitic anhydride, carbon suboxide or polycarbonyl? That would be so cool!

Debodeep Deb - 2020-07-27

Nice work sir... Keep it up😍

SD2001 - 2020-08-11

Awesome video man!!! really loved this one

Richard Alrich - 2020-07-27

This stuff could be amazing for expanding your paste in the oven!

Nick H. - 2020-08-26

Great video! Definitely got a sub from me. What music did you use for 6:22-11:26? I could listen to that all day.

Hemanth Harrilall - 2021-07-24

Excellent video. I am a polymer chemist of 40 years.

pizzablender - 2021-11-22

A long time ago, I heated PMMA plastic and condensed the vapors. Which will have been methyl methacrylate. At least I was able to polymerize it again. I suppose I used a UV bub to initiate polymerization (quartz tube).

MaRcO chiarini - 2021-04-05

This is soo cool! Really amazing video!!

Paul - 2020-08-01

Isn't methyl acrylate the basis for Loctite thread lockers? Would a similar reaction occur in a cyanoacrylate?