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Engineering LibreTexts

16.6: Stereoregularity

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  • Also known as tacticity, this property describes the regularity of the side group orientations on the backbone. The tacticity of a polymer has important implications for its degree of long-range order.

    The side groups of isotactic polymers all have the same orientation:

    Diagram of isotactic polymer

    Syndiotactic polymers have alternating arrangements of side-groups:

    Diagram of syniotactic polymer

    In atactic polymers the side-group orientations are random along the chain.

    Diagram of atactic polymer

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