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Rendiconti Lincei

, Volume 24, Supplement 1, pp 63–70 | Cite as

From X-ray, neutron diffraction and molecular modelling to the crystalline structure of stereoregular polymers: a concise outlook

  • Giuseppe AllegraEmail author
X-Ray Diffraction

Abstract

Analysis of some relevant aspects of crystallisation of linear, stereoregular polymers is carried out. Specifically, we consider (1) the pre-crystallisation state of polyethylene in solution according to the bundle theory, (2) the difficulty of isotactic polystyrene in undergoing crystallisation and (3) the prediction power of the intra-molecular lowest-energy principle as applied specifically to iso- and syndiotactic polypropylene.

Keywords

Crystal nucleation in polymers  Polymorphism in stereoregular polymers Steric hindrance in polymer crystallization Postulates of equivalence and minimum energy in crystallized chains 

Notes

Acknowledgments

The author gratefully acknowledges very useful discussions with S. Valdo Meille and A. Famulari.

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Copyright information

© Accademia Nazionale dei Lincei 2013

Authors and Affiliations

  1. 1.Politecnico di MilanoMilanItaly

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