syndiotactic polymer

syndiotactic polymer

[¦sin·dē·ə¦tak·tik ′päl·i·mər]
(organic chemistry)
A vinyl polymer in which the side chains alternate regularly above and below the plane of the backbone.
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References in periodicals archive ?
A syndiotactic polymer is a stereo-regular polymer made by a metallocene catalyst, which assembles "handed" monomers with pendant groups, or "thumbs," on alternating sides of the polymer chain, giving distinctive strength and clarity.
Polypropylenes (PP) synthesized using traditional Ziegler-Natta catalysts are generally about 95% isotactic, with a few percent atactic and some syndiotactic polymer.
Triphenylmethyl methacrylate (TrMA) is a unique monomer that forms an isotactic polymer, PTrMA, even by a radical process, (11) which usually yields atactic or syndiotactic polymers.