barbs09
Hazard to Others
Posts: 113
Registered: 22-1-2009
Location: Australia
Member Is Offline
Mood: No Mood
|
|
The Slime craze!!
Hello, couldn’t see any earlier relevant posts. Many of you dads (or mums) out there may have noticed a latest craze among their kids: slime…..
I am totally over it and the waste of polyvinyl acetate (PVA glue) and other crap they leave lying around . But more recently I have discovered that
my kids may have made an error in their interpretation of “PVA”, which some sites e.g.
https://www.stevespanglerscience.com/lab/experiments/slimes-... state it should be polyvinyl alcohol and not PV acetate.
PVA powder seems freely available on Ebay, but before I order a 100g or so, does anyone else have any recipes that kids can make, other than that on
Steve Spanglers site? Does the alcohol make a better material than the acetate?? Any other interesting recipes to keep the kids interest in nascent
chemistry up? (we have played with cornflour many times).
p.s. my kids reckon Cold Power, which contains heaps of crap but includes sodium borate, acts better than borax alone as a cross-linking
activator..
Cheers
[Edited on 5-10-2017 by barbs09]
|
|
|
Rhodanide
Hazard to Others
Posts: 348
Registered: 23-7-2015
Location: Ｔｈｅ ８０ｓ
Member Is Offline
Mood: That retro aesthetic
|
|
Quote: Originally posted by barbs09  | Hello, couldn’t see any earlier relevant posts. Many of you dads (or mums) out there may have noticed a latest craze among their kids: slime…..
I am totally over it and the waste of polyvinyl acetate (PVA glue) and other crap they leave lying around . But more recently I have discovered that
my kids may have made an error in their interpretation of “PVA”, which some sites e.g.
https://www.stevespanglerscience.com/lab/experiments/slimes-... state it should be polyvinyl alcohol and not PV acetate.
PVA powder seems freely available on Ebay, but before I order a 100g or so, does anyone else have any recipes that kids can make, other than that on
Steve Spanglers site? Does the alcohol make a better material than the acetate?? Any other interesting recipes to keep the kids interest in nascent
chemistry up? (we have played with cornflour many times).
p.s. my kids reckon Cold Power, which contains heaps of crap but includes sodium borate, acts better than borax alone as a cross-linking
activator..
Cheers
[Edited on 5-10-2017 by barbs09] |
I'm not sure if PVAc makes a better "slime" than PVOH, but I DO know that PVAc tends to smell over time (Acetic acid). I'd probably go with
PVOH/Polyvinyl Alcohol, but that's just me. As for the Borate substitute, that's a good question. I'm not too familiar with "Slime" or how it exactly
works, I just get exhausted from seeing people calling Borax 'Boric Acid', when it's not...
(Na2B4O7 · 10H2O) It's one of those circumstances where I don't know whether I find people throwing
around chemical names hither and thither, to be annoying or just funny.
|
|
|
Morgan
International Hazard
Posts: 1694
Registered: 28-12-2010
Member Is Offline
Mood: No Mood
|
|
Steve Spangler loses his mind over Borax!
https://www.youtube.com/watch?v=mpSJdLyqibs
I made some guar gum and boric acid slime that became a "solid gel" but shaking/slapping it back and forth in a jar it transitions back to a flowing
slime. Upon resting it will again become a single slug of jello that doesn't flow.
http://onlinelibrary.wiley.com/doi/10.1002/app.45037/abstrac...
[Edited on 5-10-2017 by Morgan]
|
|
|
j_sum1
Administrator
Posts: 6321
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
I have used both polyvinyl acetate glue and polyvinyl alcohol before. The two end up beig quite different textures. Both are cool but it deeds on
what you are after.
|
|
|
VSEPR_VOID
National Hazard
Posts: 719
Registered: 1-9-2017
Member Is Offline
Mood: Fullerenes
|
|
Its a shame that our society is not scientifically literate. Borax is just the visible tip on the iceberg.
Within cells interlinked
Within cells interlinked
Within cells interlinked
|
|
|
barbs09
Hazard to Others
Posts: 113
Registered: 22-1-2009
Location: Australia
Member Is Offline
Mood: No Mood
|
|
Cheers guys, few ideas there. Steve certainly loses his mind, but as you say VV, tip of the iceberg.
|
|
|
NEMO-Chemistry
International Hazard
Posts: 1559
Registered: 29-5-2016
Location: UK
Member Is Offline
Mood: No Mood
|
|
I got no where using PVA glue sold in the Uk for making slime, it just went lumpy then hard when mixed with Borax.
|
|
|
Foeskes
Hazard to Others
Posts: 156
Registered: 25-2-2017
Member Is Offline
Mood: No Mood
|
|
I think you need to mix the glue with water 1:1
|
|
|
Morgan
International Hazard
Posts: 1694
Registered: 28-12-2010
Member Is Offline
Mood: No Mood
|
|
I wonder if boric acid would work better than borax with the glue?
|
|
|
barbs09
Hazard to Others
Posts: 113
Registered: 22-1-2009
Location: Australia
Member Is Offline
Mood: No Mood
|
|
NEMO, I watched my daughter put a ca. 1/2 cup of PVA glue into a bowel and maybe a teaspoon of saturated borax solution to it and stirred. She added
a "dash" or so more if required. Turned into reasonable gloop.
|
|
|
NEMO-Chemistry
International Hazard
Posts: 1559
Registered: 29-5-2016
Location: UK
Member Is Offline
Mood: No Mood
|
|
| Quote: Originally posted by barbs09 | | NEMO, I watched my daughter put a ca. 1/2 cup of PVA glue into a bowel and maybe a teaspoon of saturated borax solution to it and stirred. She added
a "dash" or so more if required. Turned into reasonable gloop. |
BINGO, I spotted my mistake. Thx
i used youtude as a reference, they added powdered Borax, as did I.
Thinking about it, that was really dumb!! Just tried with solution and while its not perfect (pretty sure its the Glue I am using), it is much much
better than previously.
Thanks for mentioning SOLUTION, no idea why the hell I blindly followed a you tube without switching my brain on. Soon as I read your post a light
went on lol, now I feel pretty stupid 
|
|
|
barbs09
Hazard to Others
Posts: 113
Registered: 22-1-2009
Location: Australia
Member Is Offline
Mood: No Mood
|
|
Well, I guess helping someone make better slime is something...
Glad to be doing my bit for the scientific community!! 
|
|
|
Texium
|
Thread Moved
8-10-2017 at 09:11 |
unionised
International Hazard
Posts: 5126
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
Now that's funny- but for the wrong reason. He rants about people who didn't do the research and don't know anything.
Firstly it is simply wrong about the reason why borax (along with other borates) is restricted (in the EU at least).
It was nothing to do with that girl who managed to burn her hands.
This is the reason- there is a fair chance it rots your balls.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1566649/
http://dissemination.echa.europa.eu/Biocides/ActiveSubstance...
And then he goes on about the fact hat it's sold as contact lens solution.
Well, if he's a scientist, he really ought to be vaguely aware of the doctrine of Paracelsus.
It seems he's forgotten that what makes something a poison isn't the material, but the dose.
So, a very dilute borate solution isn't likely to do any harm, but a box full of the neat compound might do.
Yep, it looks like he lost his mind.
Incidentally, I recently offered to use my credentials as a scientist to get hold of the stuff so that I could provide it to a friend who is a
guide/scout leader so they could use it to make slime.
The risk is real, but small- too small, in my opinion- to be worth worrying about, compared to the benefits of entertainment and education.
[Edited on 9-10-17 by unionised]
|
|
|
NEMO-Chemistry
International Hazard
Posts: 1559
Registered: 29-5-2016
Location: UK
Member Is Offline
Mood: No Mood
|
|
So the lesson is dont dip your balls in Borax if your a rat!
Lets be honest, living is dangerous, 100% guaranteed to be fatal at some point. And this is in a human model not a rat. Although rats also have a 100%
death rate
[Edited on 9-10-2017 by NEMO-Chemistry]
|
|
|
unionised
International Hazard
Posts: 5126
Registered: 1-11-2003
Location: UK
Member Is Offline
Mood: No Mood
|
|
... or a beagle.
|
|
|
Rhodanide
Hazard to Others
Posts: 348
Registered: 23-7-2015
Location: Ｔｈｅ ８０ｓ
Member Is Offline
Mood: That retro aesthetic
|
|
I've got a Beagle. Should I keep my Borax away from him?
Why even? hahaha
|
|
|
NEMO-Chemistry
International Hazard
Posts: 1559
Registered: 29-5-2016
Location: UK
Member Is Offline
Mood: No Mood
|
|
Well the reason for the rat is, I found a paper where they discovered Borax 'could' give testicular cancer to rats exposed to borax.
I assume they have therefore also used a beagle as a model. i wondered about the Beagle myself, a bit of google foo disclosed that apparently beagles
were often used as animal models in days gone by.
No idea why the beagle was used as a breed, but seems a huge amount of work on smoking was done in the 70's and 80's using beagles forced to smoke
cigs non stop for hours.
Pretty horrible really, i am not anti animal uses in science, as long as the research is significant. I dont consider beauty products to fit
significant or justified.
Thats just my opinion and others may have a differing opinion.
Found this....
Got to be honest and say surely at this level, the only people in any kind of risk group. would surely be those working with it without protection?
[Edited on 10-10-2017 by NEMO-Chemistry]
Attachment: weir1972.pdf (944kB)
This file has been downloaded 527 times
|
|
|
Rhodanide
Hazard to Others
Posts: 348
Registered: 23-7-2015
Location: Ｔｈｅ ８０ｓ
Member Is Offline
Mood: That retro aesthetic
|
|
| Quote: Originally posted by NEMO-Chemistry |
Well the reason for the rat is, I found a paper where they discovered Borax 'could' give testicular cancer to rats exposed to borax.
I assume they have therefore also used a beagle as a model. i wondered about the Beagle myself, a bit of google foo disclosed that apparently beagles
were often used as animal models in days gone by.
No idea why the beagle was used as a breed, but seems a huge amount of work on smoking was done in the 70's and 80's using beagles forced to smoke
cigs non stop for hours.
Pretty horrible really, i am not anti animal uses in science, as long as the research is significant. I dont consider beauty products to fit
significant or justified.
Thats just my opinion and others may have a differing opinion.
Found this....
Got to be honest and say surely at this level, the only people in any kind of risk group. would surely be those working with it without protection?
[Edited on 10-10-2017 by NEMO-Chemistry] |
Wow, that's messed up.
Gotta wonder why them.
|
|
|
Morgan
International Hazard
Posts: 1694
Registered: 28-12-2010
Member Is Offline
Mood: No Mood
|
|
Posted on Reddit today ...
"How to increase glue sales by twelve thousand percent."
https://i.imgur.com/OuJPdDr.jpg
For review - the people who hate borax.
https://www.youtube.com/watch?v=mpSJdLyqibs
https://www.stevespanglerscience.com/lab/experiments/glue-bo...
|
|
|
mayko
International Hazard
Posts: 1218
Registered: 17-1-2013
Location: Carrboro, NC
Member Is Offline
Mood: anomalous (Euclid class)
|
|
| Quote: | ABSTRACT: Poly(vinyl alcohol) (PVA) precipitates in many kinds of
aqueous salt solutions. While sodium sulfate, a coagulant for PVA fiber,
precipitates PVA to yield a white rigid gel, coagulation of PVA with aluminum
sulfate, a coagulant for water treatment, yields a slime-like viscoelastic fluid.
One type of homemade slime is prepared under basic conditions with borate.
The method reported in this paper is carried out under acidic conditions with
materials that are used for water treatment. Through this demonstration,
students can learn about chemical interactions through the coagulation and
diffusion of slime. This demonstration can be carried out in 30 min. |
Also some general results on PVA coagulation under various salts:
| Code: |
No. Salta Precipitant Properties
1 NaCl low viscosity fluid
2 CaCl2·2H2O low viscosity fluid
3 Na2SO4·10H2O rigid
4 MgSO4·7H2O low viscosity fluid
5 Al2(SO4)3·14−18H2O slime-like viscoelastic fluid
6 Na2B4O7·10H2O slime
|
Isokawa, N., Fueda, K., Miyagawa, K., & Kanno, K. (2015). Demonstration of the Coagulation and Diffusion of Homemade Slime Prepared Under Acidic
Conditions without Borate. Journal of Chemical Education, 92, 1886–1888. http://doi.org/10.1021/acs.jchemed.5b00272
Attachment: Demonstration of the Coagulation and Diffusion of Homemade Slime Prepared Under Acidic Conditions without Borate.pdf (2.5MB)
This file has been downloaded 475 times
al-khemie is not a terrorist organization
"Chemicals, chemicals... I need chemicals!" - George Hayduke
"Wubbalubba dub-dub!" - Rick Sanchez
|
|
|
![[*]](images/xpblue/default_icon.gif){kind=icon}
