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  2. Perfluorosulfonic acids - Wikipedia

    en.wikipedia.org/wiki/Perfluorosulfonic_acids

    C 5 F 11 SO 3 H 350.11 2706-91-4 Perfluorohexanesulfonic acid: PFHxS C 6 F 13 SO 3 H 400.12 355-46-4 Perfluoroheptanesulfonic acid: PFHpS C 7 F 15 SO 3 H 450.12 375-92-8 Perfluorooctanesulfonic acid: PFOS C 8 F 17 SO 3 H 500.13 1763-23-1 Perfluorononanesulfonic acid: PFNS C 9 F 19 SO 3 H 550.14 68259-12-1 Perfluorodecanesulfonic acid: PFDS C 10 ...

  3. Per- and polyfluoroalkyl substances - Wikipedia

    en.wikipedia.org/wiki/Per-_and_polyfluoroalkyl...

    The process does not work on perfluorosulfonic acids such as PFOS. [237] A 2022 study published in Chemical Science shows breakdown of C-F bonds and their mineralization as YF 3 or YF 6 clusters. [238] Another study in the Journal of the American Chemical Society described the PFASs breakdown using metal-organic frameworks (MOFs). [239]

  4. Proton-exchange membrane - Wikipedia

    en.wikipedia.org/wiki/Proton-exchange_membrane

    One of the most common and commercially available PEM materials is the fluoropolymer (PFSA) [2] Nafion, a DuPont product. [3] While Nafion is an ionomer with a perfluorinated backbone like Teflon, [4] there are many other structural motifs used to make ionomers for proton-exchange membranes. Many use polyaromatic polymers, while others use ...

  5. Business card - Wikipedia

    en.wikipedia.org/wiki/Business_card

    Business cards are cards bearing business information about a company or individual. [ 1 ] [ 2 ] They are shared during formal introductions as a convenience and a memory aid. A business card typically includes the giver's name, company or business affiliation (usually with a logo ) and contact information such as street addresses , telephone ...

  6. Perfluoroalkyl carboxylic acids - Wikipedia

    en.wikipedia.org/wiki/Perfluoroalkyl_carboxylic...

    Trifluoroacetic acid is a widely employed acid, used for example in the synthesis of peptides.Its esters are useful in analytical chemistry. Longer-chain perfluoroalkyl carboxylic acids, e.g. with five to nine carbons, are useful fluorosurfactants and emulsifiers used in the production of polytetrafluoroethylene (Teflon) and related fluoropolymers.

  7. Freepik - Wikipedia

    en.wikipedia.org/wiki/Freepik

    Freepik is a technology company specializing in AI tools for creating and editing audiovisual content. [1] The company provides AI-powered design tools, AI-generated images, and a growing collection of stock photos, illustrations, and vector graphics, operating under a freemium business model.