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单词 syndiotactic
释义

Definition of syndiotactic in English:

syndiotactic

adjective ˌsɪndʌɪə(ʊ)ˈtaktɪksinˌdī-
Chemistry
  • (of a polymer or polymeric structure) in which the repeating units have alternating stereochemical configurations.

    Example sentencesExamples
    • In a syndiotactic macromolecule, the configurational repeating unit consists of two configurational base units that are enantiomeric.
    • Depending on the location of the side groups and the nature of the starting monomers, linear polymers can have various structural isomers denoted as isotactic, syndiotactic, or atactic.
    • This specification covers syndiotactic polystyrene materials including homopolymer, copolymers, blends, and impact modified, suitable for molding and extrusion.
    • It should also be mentioned that syndiotactic polypropylene is also suitable for recycled uses because it is not cross-linked.
    • The diffusional behavior of helium and carbon dioxide in crystalline syndiotactic polystyrene has been studied by means of molecular simulation.

Origin

1950s: from Greek sunduo 'two together' + taktos 'arranged' + -ic.

 
 

Definition of syndiotactic in US English:

syndiotactic

adjectivesinˌdī-
Chemistry
  • (of a polymer or polymeric structure) in which the repeating units have alternating stereochemical configurations.

    Example sentencesExamples
    • The diffusional behavior of helium and carbon dioxide in crystalline syndiotactic polystyrene has been studied by means of molecular simulation.
    • Depending on the location of the side groups and the nature of the starting monomers, linear polymers can have various structural isomers denoted as isotactic, syndiotactic, or atactic.
    • It should also be mentioned that syndiotactic polypropylene is also suitable for recycled uses because it is not cross-linked.
    • In a syndiotactic macromolecule, the configurational repeating unit consists of two configurational base units that are enantiomeric.
    • This specification covers syndiotactic polystyrene materials including homopolymer, copolymers, blends, and impact modified, suitable for molding and extrusion.

Origin

1950s: from Greek sunduo ‘two together’ + taktos ‘arranged’ + -ic.

 
 
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更新时间:2024/12/23 2:02:30