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・ Polyalthia hypogaea
・ Polyalthia korinti
・ Polyalthia laddiana
・ Polyalthia lancilimba
・ Polyalthia lateritia
・ Polyalthia litseifolia
・ Polyalthia longifolia
・ Polyalthia macropoda
・ Polyalthia nitidissima
・ Polyalthia pachyphylla
・ Polyalthia palawanensis
・ Polyalthia pingpienensis
・ Polyalthia rufescens
・ Polyalthia shendurunii
・ Polyalthia verrucipes
Polyamide
・ Polyamide-imide
・ Polyamine
・ Polyamine oxidase
・ Polyamine oxidase (propane-1,3-diamine-forming)
・ Polyamine-modulated factor 1
・ Polyamine-transporting ATPase
・ Polyaminopropyl biguanide
・ Polyamorous (song)
・ Polyamorphism
・ Polyamory
・ PolyAMPS
・ Polyana López
・ Polyana-D4
・ Polyandrococos


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Polyamide : ウィキペディア英語版
Polyamide
A polyamide is a macromolecule with repeating units linked by amide bonds.〔Palmer, R. J. 2001. Polyamides, Plastics. Encyclopedia Of Polymer Science and Technology. 〕 Polyamides occur both naturally and artificially. Examples of naturally occurring polyamides are proteins, such as wool and silk. Artificially made polyamides can be made through step-growth polymerization or solid-phase synthesis yielding materials such as nylons, aramids, and sodium poly(aspartate). Synthetic polyamides are commonly used in textiles, automotive applications, carpets and sportswear due to their high durability and strength. The transportation industry is the major consumer, accounting for 35% of polyamide (PA) consumption.〔Market Study Engineering Plastics, Ceresana, Sep 2013 ()〕
==Classification==
Polymers of amino acids are known are polypeptides or proteins.
According to the composition of their main chain, synthetic polyamides are classified as follows:
All polyamides are made by the formation of an amide function to link two molecules of monomer together. The monomers can be amides themselves (usually in the form of a cyclic lactam such as Caprolactam), α,ω-amino acids or a stoichiometric mixture of a diamine and a diacid. Both these kinds of precursors give a homopolymer. Polyamides are easily copolymerized, and thus many mixtures of monomers are possible which can in turn lead to many copolymers. Additionally many nylon polymers are miscible with one another allowing the creation of blends.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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