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Tacticity

Tacticity (from Greek: τακτικός, romanized: taktikos, "relating to arrangement or order") is the relative stereochemistry of adjacent chiral centers within a macromolecule.[better source needed] The practical significance of tacticity rests on the effects on the physical properties of the polymer. The regularity of the macromolecular structure influences…

Measurement, Polymers & Overview

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Overview

Definition

Polymers

Effect on polymer properties

Stereocontrolled polymerization

Head/tail configuration

Techniques for measuring tacticity

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Map overview Semantic statistics

Tacticity

Nodes59
Edges58
Triples39
Avg. degree1.97
Density0.033898
Components1

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Tacticity

Top relations

related to Techniques for measuring tacticity · 8
Tacticity → Bernoullian, FTIR, In, Markovian, NMR, Other, SIMS, This
related to Triads · 6
Tacticity → An, Bernoulli, For, Pm, The, When
related to Effect on polymer properties · 5
Tacticity → As, Crystallinity, Isotactic, Tg, Tm
related to Other conventions for quantifying tacticity · 3
Tacticity → An, MSL, The
related to Stereocontrolled polymerization · 3
Tacticity → Depending, Polymers, Stereocontrolled
related to Tetrads, pentads, etc. · 2
Tacticity → NMR, The
is a · 1
Tacticity → average length of m and r sequences within the polymer molecule

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Important terminology

polymer isotactic polymers macromolecule macromolecules substituents polymerization also syndiotactic one atactic diad chain diads configuration properties units side unit amorphous

Entity relationships Subject–Predicate–Object triples

SubjectPredicateObjectConfidenceSrc
Tacticityis aaverage length of m and r sequences within the polymer molecule0.90text
NMRinstance ofWith the aid of spectroscopic techniques0.80text
it is possible to pinpoint the composition of a polymer in terms of the percentages for each triad.Polymers that are formed by free-radical mechanismsinstance ofWith the aid of spectroscopic techniques0.80text
such as polyvinyl chloride are usually atacticinstance ofWith the aid of spectroscopic techniques0.80text
strengthinstance ofand thus affects other properties that depend on crystallinity0.80text
melting pointinstance ofand thus affects other properties that depend on crystallinity0.80text
and solubilityinstance ofand thus affects other properties that depend on crystallinity0.80text
optical clarityinstance ofbut amorphous polymers do not necessarily have poor mechanical properties and can have other advantages0.80text
Bernoullian or Markovian analysis may also be used to fit the distributioninstance ofstochastic methods0.80text
predict higher n-adsinstance ofstochastic methods0.80text
calculate the isotacticity of the polymer to the desired level.Other techniques sensitive to tacticity include x-ray powder diffractioninstance ofstochastic methods0.80text
secondary ion mass spectrometryinstance ofstochastic methods0.80text

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