Jylliana
Hazard to Others
Posts: 126
Registered: 3-10-2014
Location: The Netherlands
Member Is Offline
Mood: Bubbly ^-^
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Bakelite from resorcinol
Hello,
It's been a while since I've been here but I wanted to restart some home chemistry after some stuff happened.
I wanted to make Bakelite after I read something about it on a Yahoo groups forum. The same person described the entire synthesis in a couple of
sentences. I decided to buy the required reagents and give it a shot, but when I looked for a more detailed protocol to follow, I couldn't find
anything with the starting materials I had ordered.
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Dissolve 10g Resorcinol in 16ml water.
Add 12ml 36% formaldehyde solution.
Add 1ml 5M sodium hydroxide.
Heat the mixture carefully until the reaction starts.
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Most syntheses I could find online, started with phenol, or followed an entirely different set of steps.
I guess I could follow the steps as I first read them, with resorcinol, but not finding a single other source for this makes me wary about the
reliability of the source.
Can any of you shed some light on a better source with the same materials, or at least verify that I am not making a mistake by trying this? I tend to
be rather clumsy so I'd rather double check with more experienced people.
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j_sum1
Administrator
Posts: 6324
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
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Fantastic to have you back Jyliana. And great to be getting back into some home cgem.
My experience with bakelite is limited so I can't help much. I am sure someone will be able to help.
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WGTR
National Hazard
Posts: 971
Registered: 29-9-2013
Location: Online
Member Is Offline
Mood: Outline
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I don't have experience using resorcinol, but here is my own experiment using phenol:
http://www.sciencemadness.org/talk/viewthread.php?tid=63175&...
Using ammonium hydroxide as a catalyst gives cleaner results than if sodium hydroxide is used.
Anyway, there are a variety of different formaldehyde resins, and the final properties can vary depending on the initial ratios of formaldehyde to the
other component being used.
P.S.: If you Google "resorcinol formaldehyde resins", you'll get quite a bit more information.
[Edited on 3-28-2017 by WGTR]
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