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The French group for the study of polymers and their application, also called more simply French polymer group (GFP) is a French nonprofit organization and learned society, which aims to promote polymer chemistry, physics, and material science in French industry and institutes of higher learning.
Also acid ionization constant or acidity constant. A quantitative measure of the strength of an acid in solution expressed as an equilibrium constant for a chemical dissociation reaction in the context of acid-base reactions. It is often given as its base-10 cologarithm, p K a. acid–base extraction A chemical reaction in which chemical species are separated from other acids and bases. acid ...
The Dictionnaire de l'Académie française (French pronunciation: [diksjɔnɛːʁ də lakademi fʁɑ̃sɛːz]) is the official dictionary of the French language. The Académie française is France's official authority on the usages, vocabulary, and grammar of the French language, although its recommendations carry no legal power. Sometimes ...
Catholicon - purported first French dictionary: 1499 Thresor de la langue françoyse tant ancienne que moderne : 1606 Dictionnaire de l'Académie française: 1694 to present Littré: 1877 Grand Dictionnaire Encyclopédique Larousse: 1982-1985 Grand dictionnaire universel du XIXe siècle: 1866-1890 Dictionnaire des ouvrages anonymes et pseudonymes
à la short for (ellipsis of) à la manière de; in the manner of/in the style of [1]à la carte lit. "on the card, i.e. menu". In restaurants it refers to ordering individual dishes from the menu rather than a fixed-price meal.
A uniform polymer (often referred to as a monodisperse polymer) is composed of molecules of the same mass. [5] Nearly all natural polymers are uniform. [6] Synthetic near-uniform polymer chains can be made by processes such as anionic polymerization, a method using an anionic catalyst to produce chains that are similar in length.
Polymer nomenclature usually applies to idealized representations meaning minor structural irregularities are ignored. A polymer can be named in one of two ways. Source-based nomenclature can be used when the monomer can be identified. Alternatively, more explicit structure-based nomenclature can be used when the polymer structure is proven.
Chitin (C 8 H 13 O 5 N) n (/ ˈ k aɪ t ɪ n / KY-tin) is a long-chain polymer of N-acetylglucosamine, an amide derivative of glucose. Chitin is the second most abundant polysaccharide in nature (behind only cellulose ); an estimated 1 billion tons of chitin are produced each year in the biosphere. [ 1 ]