polyelectrolyte
41Atomic force microscope — The atomic force microscope (AFM) or scanning force microscope (SFM) is a very high resolution type of scanning probe microscope, with demonstrated resolution of fractions of a nanometer, more than 1000 times better than the optical diffraction… …
42Polydispersity index — In organic chemistry, the polydispersity index (PDI), is a measure of the distribution of molecular mass in a given polymer sample. The PDI calculated is the weight average molecular weight divided by the number average molecular weight. It… …
43Pel — or pel may refer to: pel, an abbreviation for pixel. Also sometimes used to refer to a subpixel. Permissible Exposure Limit, a legal limit defined by the Occupational Safety and Health Administration in the United States Peak of Eternal Light, a… …
44PEM — may stand for: Peabody Essex Museum Pediatric emergency medicine Photoelastic modulator Polioencephalomalacia Polyelectrolyte multilayer Porous European Mix – a type of asphalt used on roads and airport runways, commonly referred to as PEM… …
45Hair conditioner — A 19th century advertisement for 9 hair care products from a company named Dupuy. Hair conditioner is a hair care product that alters the texture and appearance of hair. Contents …
46DLVO theory — The DLVO theory is named after Derjaguin and Landau, Verwey and Overbeek. The theory describes the force between charged surfaces interacting through a liquid medium. It combines the effects of the van der Waals attraction and the electrostatic… …
47Electroactive polymers — or EAPs are polymers whose shape is modified when a voltage is applied to them.They can be used as actuators or sensors. As actuators, they are characterized by being able to undergo a large amount of deformation while sustaining large forces.… …
48Drilling mud — In geotechnical engineering, drilling mud, also known as spud mud (when beginning the drilling process), is a drilling fluid used to drill boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling… …
49Ionomer — An ionomer is a polyelectrolyte that comprises copolymers containing both electrically neutral repeating units and a fraction of ionized units (usually no more than 15 percent). They link in such a way that, even though they are stiff at room… …
50Polylactic acid — The skeletal formula of poly(lactic acid) Poly(lactic acid) or polylactide (PLA) is a thermoplastic aliphatic polyester derived from renewable resources, such as corn starch (in the United States), tapioca products (roots, chips or starch mostly… …
