Abstract
Hydrogenated polybutadiene films, especially those that are quenched, exhibited marked elastic recovery even under fairly large strain. In order to clarify the relationship between elastic recovery and macro- and microscopic-structure of the hydrogenated polybutadiene films, X-ray diffraction and optical properties such as birefringence and infrared dichroism were measured simultaneously and mechanical properties were also studied. The results were compared with those for low-density polyethylene films, having chemical structures similar to the hydrogenated polybutadiene films but which do not exhibit marked elastic recovery. The elastic properties of the hydrogenated polybutadiene films are attributed to their loose spherulitic structures which allow crystallites to orient in a reversible manner. On the other hand, spherulitic structures of low-density polyethylene films are so tight that crystallites cannot orient under a relatively large strain without breaking the spherulites.
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Tanaka, A., Saihara, Y. & Onogi, S. Relationship between Elastic Recovery and Macroscopic- and Microscopic-Structures of Hydrogenated Polybutadiene Films. Polym J 12, 483–494 (1980). https://doi.org/10.1295/polymj.12.483
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DOI: https://doi.org/10.1295/polymj.12.483