Hazel Chem - 2018-11-25
hello you all this video is the second part of the polystyrene thermolysis dibenzoylperoxide video: https://www.bitchute.com/video/rteKdpV4XTEh/ this little video series was supposed to show the potential recycling of polystyrene therefor we started with PS wich was reduced in volume by dissolving it in acetone, then the PS was thermolyseed and now the crude styrene was fractionally destilled in a vacuum, and again polymerized using some dibenzoyl peroxide
ah that looks interesting and useful, sadly i dont have the space for a chemistry lab.
But this is also above my skill level xD. Anyway +1
Can we make Nano particles of Styrofoam?
GREAT VIDEO...........loved the test at the end
Glad you enjoyed it! I am trying to make more test in the end to clarify that we really made the desired product.
mfg hazelChem
The reason that you media bubbles is do to a concept called vapor pressure. I am no wiz bit but if you are near boiling then drop pressure you will boil. When you induce a vacum you remove the pressure and lower the boiling point but still don't have enough vapor pressure to reach the condenser? Idk I have been binging on pyrolysis and distillation
hello you all this video is the second part of the polystyrene thermolysis
this little video series was supposed to show the potential recycling of polystyrene
therefor we started with PS wich was reduced in volume by dissolving it in acetone, then the PS was thermolyseed and now the crude styrene was fractionally destilled in a vacuum, and again polymerized using some dibenzoyl peroxide
in the last video we obtained the crude styrene and stabilized it with some hydroquinone
so now we have to fractionally destill the whole thing in a vacuum
therefor i set up a fitting apparatus and hooked the condenser and the vacuum pump up to the water line
the reason why we have to do a fractionall vacuum destillation is the reactivity of the carbon carbon double bond in the styrene
as styrene can polimerize on its own we have to reduce the temperature during the destillation as much as we can, to reduce the speed of the selfpolimerization
secondly we have to get rid of any oxigen because oxigen and light especially in combination with high temperatures initiate a polymerization of our styrene
so that explains why we have to do a vacuum destilation, but why a fractional vacuum destillation ?
that is easy to explain do to the process we used, the thermolysis, we have some impurities that came from pyrolysis reactions that occured do to high temperatures
examples for such impurities are benzene toluene and many others, all of them have a boiling point near to that of styrene and some even form a azeotroppe
so we have to put some kind of collum in between the boiling flask and the condenser to get a better separation and a product of higher quality
the first fraction came over from twenty fife degrees celcius and i destilled further until it got over thirty fife degrees celcius
up until this moment there was no clean fraction, this can be seen at the densety blurs new destillat makes when it hits the old one
but after the first fraction there was a bigger one just under thirty seven degrees celcius
beutiful arent they
beutiful but, carcinogenic
after each fraction i detached the vacuum and prepared a flask with some hydroquinone as a stabilizer to counter any polymerization and prolong the storing time
normaly you add something like one hundred ppm but i went with the more is better route
so as the temperature increased i stopped the destilation and filled the fraction in my prepared fifty milliliter flask and put it aside
and here is where it gets funny, i dont know why but every time i put the vacuum back on the destillation mixture began to foam like crazy but never reached the condenser
anyway as you can see here there are no more densety blurs indicating that we have a very pure fraction
when there was only a small amount of crude styrene left i ended the destilation and filled the third fraction in a little bottle
and as allways i added some hydroquinone to stabilize it
but now is the question is this realy styrene or am i a noob and you dont even realize it
therefor we have to perform some tests
the first test i want to make is looking if this has the polimerization propertys of styrene
to do this i set up a waterbath with a testtube and a magneticstirrer
and then add some of the potential styrene into the test tube, but keep in mind this stuff does not have the one hundred percent reactivity do to the allready added hydroquinone
to the product we add some of the dibenzoyl peroxide we made in a earlier video, that is currently only on bitchut do to the strike i got, link to it is in the video description
so now to explain what is happening here
the dibenzoyl peroxide undergoes a homolytic thermical splitting into two Benzoyloxy radicals , these Benzoyloxy radicals then decompose under CO2 elimination and form two phenylradicals
the phenylradicals then act as initiator for the radical polimerization between the alkene functions
and if you want to say it like this, it increases the speed of the over all polimerization that is going on in the styrene that increases the chain length drasticly
this mixture is then kept boiling for around a hour to give the polimerization some time to take place and overcome the effect of the hydroquinone
meanwhile we have some time to do another test to determin weather it realy is styrene
therefor we measure the weight and the temperature of our considerd styrene to get the densety of the product
so i got my fancy new scale out and a ten milliliter pipet and transfered the ten milliliters onto the scale, they weight nine gramms giving zero point nine gramms per milliliter
and as you all know density depends on the temperature so i measured that as well, to give me nine teen point one degrees celcius, just under the twenty where the literature densitys are taken
but now back to our first test
to see if it has worked we have to perform a viscosity test compering the treated product with the fresh one
and as you can see the heat and DBPO treated one is viskos and takes a long time to just make some distance
and now the fresh product , oh wow who guessed that seems like i am no noob, but wait there is a nother test waiting to be done
styrene has an even higher refractive index than benzene making glas that is immersed in it disappear
nice, and this fits two, plus the density i measured is only a little bit off, what could be do to the lower temperature
so there you have it, with a ninetee nine percent chance it is styrene
meaning we successfully recycled polystyrene into styrene of good purity
i hope you liked this video have a nice one and
have fun and do not kill your self
We should collaborate. Call me.
Chapter 23
It is probably not due to temperature…the density decreases with temperature, but one degree is not much. Density measurements are not usually that exact, so this is difference is probably just random. Do you have bromine/iodine? You could measure how much bromine/iodine you can decolour with your product, so you get the molar mass more or less accurate.
if i can find some spare time i'll do it
mfg hazelChem
Alternatively, you could use permanganate - that would perform the same function, though maybe a little less precisely.
@12thealchemist good idea but with the 1,2-Dibrom-1-phenylethan i could actually do something :D
mfg hazelChem
@Hazel Chem Good point. I was thinking at relatively high dilution, but even then, the bromo derivative is still more useful XD
@Hazel Chem ..........You should make a halohydrin from your double bond. That is one of my goals. Adding 2 different functional groups in one reaction. But i could not take the smell of styrene.
Next time spell "distillation" properly when you put it in your text-to-speach program.
No e in distillation :)
Very interesting watch otherwise <3
thx thats :D i ll do my best
mfg hazelChem
Extractions&Ire - 2018-11-28
'beautiful but carcinogenic' I say that a lot too!