6 articles
Chlorinated polyvinyl chloride
Chlorinated polyvinyl chloride (CPVC) is a thermoplastic made by post-chlorinating PVC resin to 63 to 69 percent chlorine, widely used as hot-water plumbing pipe rated to 200 °F.
Linear low-density polyethylene
Linear low-density polyethylene (LLDPE) is a semicrystalline polyethylene copolymer in which ethylene is polymerized with an alpha-olefin such as 1-butene, widely used in stretch film and food packaging.
Poly-N-isopropylacrylamide
Poly-N-isopropylacrylamide, abbreviated PNIPAM or PNIPAAm, is a synthetic thermoresponsive polymer that dissolves below about 32 °C and phase-separates above it, making it the most studied smart polymer for drug delivery, tissue engineering, and cell sheet harvesting.
Polybutylene
Polybutylene, more precisely polybutene-1 (PB-1), is a semicrystalline thermoplastic polyolefin used for hot and cold water piping since the mid 1960s, though it vanished from North America after 1990s plumbing-failure litigation.
Polyethyleneimine
Polyethyleneimine (PEI), also called polyaziridine, is a cationic polymer of ethyleneimine units existing in branched and linear forms, widely used for DNA and RNA transfection and carbon dioxide capture.
Polystyrene sulfonate
Polystyrene sulfonate is a non-absorbed cation-exchange resin, sold as Kayexalate and Kionex, used to treat hyperkalemia by exchanging sodium for potassium in the gut; approved by the FDA in 1958.