Views : 3,471,629
Genre: Science & Technology
Date of upload: Jan 13, 2018 ^^
Rating : 4.937 (1,140/70,762 LTDR)
RYD date created : 2022-04-09T18:29:53.579973Z
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Top Comments of this video!! :3
Hey NileRed, while drying out the acetone of cellulose acetate, try adding diluted sodium hydroxide mixture and heat dry (temperature between 30 - 40 degree Celsius) them and you will get great cellulose acetate film and highly flexible too. If you are uptown doing it again and have any results please let me know.
Reason: Removal of few more acetyl groups and allowing the cellulose polymerise evenly as well as the sodium hydroxide solution would reduce the contraction due to shock drying of acetone.
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10:15 ..
That shrinking effect is used in covering RC airplanes with paper or silk (and also for real airplanes with cloth covering!). You paint the paper with a laquer made of it, as it dries it sticks to the structure and tightens very well. The forces can be strong enough to BREAK the structure under it, if you use to much of it at once on a very light build. In this case, campher is used as a plasticizer.
It also works with nitrocellulose and is sometimes still done, because it also greatly improves the flammability if you want to burn your plane after a bad crash.
So, if you still try to make it again, maybe try campher. Don't have any idea about the relative amount needed, though.
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@BobbyDukeArts
6 years ago
I don't think I've watched a single video of yours that I didn't like, and I've watched almost every single one. So thank you for keeping me entertained with the wonders of chemistry!
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