polymer
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A curiosity regarding baking soda
I have practically been posessed with the world of polymer chemistry. So, I have been performing a few neat experiments where I mixed 15mL water with
30mL baking soda first, and then 20mL elmer's glue was mixed with that. Before I did that, I observed the reaction of the tincture of iodine with a
suspension of the baking soda, which turned blue. I then observed the same thing with the solution of the
baking soda and glue, and nothing happened. So, I concluded that the glue added atoms that formed a covalent bond with the other atoms. So, does
anyone have the glue's molecular formula? Does anyone know of a glue that can form ionic bonds?
E/m*c^2
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Aqua_Fortis_100%
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sorry about my ignorance(and english), but what is "elmer's glue " ??? is it a type of glue which is made with any type of starches or something?
"The secret of freedom lies in educating people, whereas the secret of tyranny is in keeping them ignorant."
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12AX7
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<A HREF="http://en.wikipedia.org/wiki/Elmer's_Glue">http://en.wikipedia.org/wiki/Elmer's_Glue</A> 
Edit: WHAT THE FUCK, neither anchor nor bbcode skips over the apostrophe. Your board is busted...
[Edited on 12-30-2006 by 12AX7]
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Aqua_Fortis_100%
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Oh really sorry , but i getting angry with spam in another post... so i now delete my own post there (in "b12 vitamin")..
about the elmer's glue with you send the link, thanks... and isn't made with starches as i imagined... but the "Elmer's Glue-All is a polyvinyl
acetate-based glue."(from your link)...
And again sorry about spell out swearword..this isn't a good thing to beginner as i ... again, i'm ashamed ..
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| Quote: | | ..Does anyone know of a glue that can form ionic bonds?.. |
MAYBE a glue based sulfur, like the polysulfide polymers based glues.. but note which this isn't water soluble,so you will should use a non-polar
solvent...
what about?
[sorry about my poor english or other thing]
[Editado em 30-12-2006 por Aqua_Fortis_100%]
[Editado em 30-12-2006 por Aqua_Fortis_100%]
"The secret of freedom lies in educating people, whereas the secret of tyranny is in keeping them ignorant."
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12AX7
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Ionic bonds huh, does portland cement count? It's a glue of sorts, composed of ions. Sounds good to me.
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Aqua_Fortis_100%
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but the portland cement have no a lot of insoluble or weak solubles materials in many solvents,(which can form suspensions),like MgO, calcium
silicates, etc? this not affect the "glue" form ionic bonds? ... and also no have organic things ,leving which is almost the same thing which add
basic things(because MgO, CaO,presents in portland,etc)... i'm now confused... sorry..
"The secret of freedom lies in educating people, whereas the secret of tyranny is in keeping them ignorant."
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polymer
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Portland cement has too many impurities to be useful. In other words, Portland Cement has too many solids.
E/m*c^2
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12AX7
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Eh? The whole point of glue is to be solid. It has exactly as much impurity as it needs for its specified use (and there are many specifications of
calcium silicate based cements, I might add).
If you're trying to get at something, then rather than being confusing, please do tell.
Tim
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Aqua_Fortis_100%
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thanks Tim..
i'm confused about how a organic polymer can be ionic, even the polysulfide polymers. i'ts strange for me,even knowledging which in fact exist...
the portland cement isn't organic..does not wish the member Polymer , organic glues which be ionic??? or any other type of glue as cement which you
says?
i must just search plus and plus... because polymers isn't my "speciality"...as several others things..
actually i'm very interested in ALL of sciencemadness, because when i searche anything in google ,yahoo, etc , almost always appear results from
sciencemadness...
well, in short, i'm a newbie which still needs of lots of informations about the chemistry "mother"..
"The secret of freedom lies in educating people, whereas the secret of tyranny is in keeping them ignorant."
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Ozone
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Hello,
PVAc will form *hydrogen bonded* crosslinked-chain structures. Addition of a good enough alkali will abstract the protons from the pendant hydroxyl
groups to render the negative alkoxide ion. In the presence of a suitable cation, viz. Na, you will get ionic pairs -O- +Na. In other cases, viz.
where the pendant groups are carboxyls and the counter ion is say, Ca++, the chains can be ionically linked together to yield material that is quite
tough (the obnoxius, tough polymer used to package small electronics).
For fun, try adding your pVAc glue to a solution of borax. The "boronic acid" should crosslink the stuff via boronic ester linkages to yield a
non-Newtonian fluid resembling "silly putty".
Happy New Year,
O3
-Anyone who never made a mistake never tried anything new.
--Albert Einstein
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12AX7
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I don't see why you couldn't polymerize something with carboxylic side groups. Does acrylic acid polymerize? Being an acid, that would count right
there. Then treat it with a base to get the salt.
And whaddya know, it works, too. http://en.wikipedia.org/wiki/Sodium_polyacrylate
Tim
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