First of all, I have to admit that this is a good movie, as an amateur chemistry lover, the experience of watching the movie is very good.
It is because I have a little chemical basis, after watching the film obviously felt wrong. That is, the film deliberately confused the distinction between Teflon and PFOA, so as to mislead many viewers, the result is obvious, even the top of douban's popular science post is wrong about Teflon
Teflon is a polymer, which is itself non-toxic (most polymers can't be absorbed by the human body, including polymer nutrients, so don't believe those protein supplement ads), and the world hasn't fallen so far as to allow a highly toxic movie substance to be used so widely in real life. Most of the teflon nonstick pans that we use in our homes are not malformed.
What's toxic is the use of a dispersant in teflon --PFOA, or C8 -- which was not invented by DuPont, but by 3M. Dupont purchased PFOA from 3M, and 3M informed DuPont of the toxicity of PFOA. (To add to this section of science, the synthesis process of teflon will generate very high heat and even have the risk of explosion, the best way is to synthesize it in water and cool it in time, but the fluoride raw material has good water flooding, so it cannot be distributed in water well, so a hydrophilic fluoride-philic dispersant is needed. Then, 3M's PFOA, which had been abandoned for safety reasons, found a new use).
In addition, DuPont has emphasized for years that its teflon products have been filtered out of PFOA. I think it's true, because there are trillions of teflon products in the world, and there are testing agencies in every country in the world. If you want to pay, you can have your non-stick frying pan tested
But I am not saying that DuPont is innocent. Dupont's fault is that it did not dispose of PFOA waste effectively, resulting in industrial pollution that ensnighted local residents and production workers. In fact of the case is for industrial waste pollution harm residents, if Du Bangming know teflon toxic, and sent him to the kitchen of every family, the United States government thou also he the extinction of human behavior, the regulation today let nonstick skillet, I seriously doubt that national regulators are aliens sent undercover
Looking back at the movie and working through the lines, it's clear that the writers knew the difference and even introduced the 3M meme. However, the movie deliberately confused the concept of teflon and C8, so that many non-professional moviegoers thought that teflon was toxic, teratogenic and carcinogenic, making them confused about whether to throw away their kitchen utensils or to cause family conflicts.
Why do movies do this? I think it was probably to enhance the shock effect, so that each of us would feel that we were affected, and to promote the film, because if it was only a local pollution case, the public would not pay much attention to it.
The film itself is a good idea, depicting and celebrating some political and business combinations who dare to challenge high authority for the disadvantaged. They are commendable, but deliberately distorting and obfuscating scientific facts in order to make the film more enjoyable and more widely available is not, as the film criticizingly says of DuPont, "crossing the line.
Finally, according to some data collected after watching the movie, we can generally popularization of amway. Since PFOA used to be an assistant in the production of Teflon, there may also be traces of residue in the finished products, so when buying kitchen supplies, you must buy big brands, and don't be greedy for small and cheap. Large companies' purification processes and testing standards are at least more reliable than those of small companies, and PFOA alternatives are now available. Large companies tend to be at the forefront of industry technology, while small companies are not.
Even PFOA and PFOS do not have special customs code, and the packaging of raw materials does not warn against dangerous substances. It is hard to imagine how the factory that produces and uses PFOA can prevent pollution. Based on the current situation of domestic industrial management, this is really worth the concern of the general public.
Hopefully, the spirit of the film will influence us to protect ourselves more and influence the GOVERNMENT to regulate industrial pollution.
As for the pot at home, don't worry too much.
