polyethylene oxide การใช้

• There are two alkyl chains commonly used in surfactants : polyethylene oxide and polypropylene oxide.
• Polyethylene oxide, or high-molecular weight polyethylene glycol, is synthesized by suspension polymerization.
• The polyether groups often comprise ethoxylated ( polyethylene oxide-like ) sequences inserted to increase the hydrophilic character of a surfactant.
• Formation aid is polyethylene oxide, and it helps slow the flow of water, which gives the paper-maker more time to form sheets.
• The base resin is polystyrene onto which is attached long chains ( MW ca . 3000 Da ) of polyethylene glycol ( PEG; also known as polyethylene oxide ).
• Polyethylene oxide chains have an oxygen and two carbon (-O-CH 2-CH 2-) n repeating unit and has an increased hydrophilic character compared to hydrocarbons.
• Polypropylene oxide has the same backbone structure as polyethylene oxide but with a methyl group substituent of one of the carbons, and this structure has hydrophobicity between hydrocarbons and polyethylene oxides.
• Polypropylene oxide has the same backbone structure as polyethylene oxide but with a methyl group substituent of one of the carbons, and this structure has hydrophobicity between hydrocarbons and polyethylene oxides.
• By combining salts and polyethers such as polyethylene oxide (-CH 2-CH 2-O-) n, it is possible to synthesise thousands of metal-polyether complexes, alternatively known as polymer electrolytes.
• Other materials are also used to make a superabsorbent polymer, such as polyacrylamide copolymer, ethylene maleic anhydride copolymer, cross-linked carboxymethylcellulose, polyvinyl alcohol copolymers, cross-linked polyethylene oxide, and starch grafted copolymer of polyacrylonitrile to name a few.
• "' Triton X-100 "'( " n " ) is a nonionic surfactant that has a hydrophilic polyethylene oxide chain ( on average it has 9.5 ethylene oxide units ) and an aromatic hydrocarbon lipophilic or hydrophobic group.
• Polyacrylic acid is a weak anionic polyelectrolyte, whose degree of ionisation is dependent on solution pH . In its non-ionised form at low pHs, PAA may associate with various non-ionic polymers ( such as polyethylene oxide, poly-N-vinyl pyrrolidone, polyacrylamide and some cellulose ethers ) and form hydrogen-bonded interpolymer complexes.