Abstract
Chain orientation is a phenomenon unique to polymers. The unidimensional nature of the linear polymer chain makes it possible to obtain strongly anisotropic properties. The anisotropy arises when molecules are aligned along a common director (Fig. 9.1). The intrinsic properties of a polymer chain are strongly directionally dependent. The strong covalent bonds along the chain axis and the much weaker secondary bonds in the transverse directions cause significant anisotropy of any given tensor property (x) (Fig. 9.1). The concept of orientation would be meaningless if the chain-intrinsic properties were isotropic.
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Gedde, U.W., Hedenqvist, M.S. (2019). Chain Orientation. In: Fundamental Polymer Science. Graduate Texts in Physics. Springer, Cham. https://doi.org/10.1007/978-3-030-29794-7_9
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