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Polyvinyl Alcohol: Polyvinyl Acetate Stirred in Alcoholic Potash
Charlie

Yaremwe na

Charlie

17. Ukwakira 2026DE
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Polyvinyl Alcohol: Polyvinyl Acetate Stirred in Alcoholic Potash

Vinyl alcohol itself cannot be isolated, but its polymer can: Herrmann and Haehnel (patent 1928) stirred ground polyvinyl acetate into potash dissolved in alcohol, and polyvinyl alcohol fell out as a white, odourless powder that dissolves in water. It is the protective colloid in PVA (polyvinyl acetate) glue emulsions. The picture: our diagram of the patent's Example I.
Hagati
An hour, then drying

Amabwiriza

1

Grind the polyvinyl acetate

Grind the solid polyvinyl acetate to a powder in a mortar (our method).

Ibikoresho by'iyi ntambwe:

Polivinili asetatePolivinili asetate80 g

Ibikoresho bikenewe:

Isekuru n'UmuhiniIsekuru n'Umuhini
Iminzani ya Digitale yo mu GikoniIminzani ya Digitale yo mu Gikoni
2

Dissolve the potash

Dissolve 60 g potassium hydroxide in 50 g ethyl alcohol in a vessel you can stir. Potash burns skin and eyes.

Ibikoresho by'iyi ntambwe:

Idorokiside ya potasiyumuIdorokiside ya potasiyumu60 g
Etanoli - urwego rw'ubushakashatsi, 95 %Etanoli - urwego rw'ubushakashatsi, 95 %50 g

Ibikoresho bikenewe:

Igikombe cy'IkirahureIgikombe cy'Ikirahure
Akati k'Ikirahure ko KuvangaAkati k'Ikirahure ko Kuvanga
Iminzani ya Digitale yo mu GikoniIminzani ya Digitale yo mu Gikoni
Uturindantoki Turwanya IbinyabutabireUturindantoki Turwanya Ibinyabutabire
Amadarubindi yo Kwirinda IbinyabutabireAmadarubindi yo Kwirinda Ibinyabutabire
3

Stir in the acetate

Add the 80 g ground polyvinyl acetate while stirring hard, and keep stirring for about half an hour. Polyvinyl alcohol precipitates.

Ibikoresho bikenewe:

Igikombe cy'IkirahureIgikombe cy'Ikirahure
Akati k'Ikirahure ko KuvangaAkati k'Ikirahure ko Kuvanga
Uturindantoki Turwanya IbinyabutabireUturindantoki Turwanya Ibinyabutabire
Amadarubindi yo Kwirinda IbinyabutabireAmadarubindi yo Kwirinda Ibinyabutabire
4

Filter and dry

Collect the precipitate on a filter and dry it: a white powder without odour that dissolves in water.

Ibikoresho bikenewe:

Ifonelo ya Büchner (ya porcelaine)Ifonelo ya Büchner (ya porcelaine)
Urupapuro rwo KuyungururaUrupapuro rwo Kuyungurura
Isahani ifunguye yo kumishaIsahani ifunguye yo kumisha
Uturindantoki Turwanya IbinyabutabireUturindantoki Turwanya Ibinyabutabire
5

Scaling the patent's example

Gupakira ikaye ya Jupyter…

Ibikoresho

3

Ibikoresho bikenewe

9

Iki gishushanyo gikora

Thumbnail
Agateganyo

Ifu ya polyvinyl alcohol

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Blueprint zijyanye

Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame

Polyvinyl Acetate: Vinyl Acetate Set Solid by Sunlight

Polyvinyl Acetate: Vinyl Acetate Set Solid by Sunlight

na CharlieDE

Polimeri

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CC0 Umurenge rusange

Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.

Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.

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