July 2024
Intermediate to advanced
280 pages
12h 52m
English
Content preview from The Essential Handbook of Polymer Terms and Attributes
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220 Tacticity
Tacticity is the relative stereochemistry of adjacent chiral centers within a macromolecule.
If all chiral centers have the same configuration, the arrangement of the side groups is called isotactic, and if every other chiral center has the same arrangement, it is called syndiotactic, whereas a random arrangement of the side groups is called atactic or heterotactic. Isotactic and syndiotactic polymers are able to solidify into crystalline or semicrystalline networks due to their regular structures. In contrast, atactic polymers have a random arrangement of the repeating units so they will not be able to form crystals and will usually form amorphous materials instead.
Temperature and solvent are ...
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