Role of epitaxy of nucleating agent (NA) in nucleation mechanism of polymers |
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| Affiliation: | 1. Soft Material Physics Group, Graduate School of Biosphere Science, Hiroshima University, 1-7-1 Kagamiyama, Higashi Hiroshima 739-8521, Japan;2. Collaborative Research Center, Hiroshima University, 2-313 Kagamiyama, Higashi Hiroshima 739-8527, Japan;3. ADEKA Corporation, 5-2-13, Shirahata, Minami-ku, Saitama-city, Saitama 306-0022, Japan;4. Soft Material Physics Group, Graduate School of Integrated Arts and Sciences, Hiroshima University, 1-7-1 Kagamiyama, Higashi Hiroshima 739-8521, Japan |
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| Abstract: | The role of “epitaxy” of nucleating agent (NA) in nucleation mechanism of polymers was studied to formulate the nucleation rate (I) as a function of concentration of NA (CNA) in mixture of polymer and NA and lateral size of a NA crystal (aNA), I ∝ CNA/aNA. It is proved that the epitaxy of NA controls nucleation mechanism by confirming above formula experimentally by observing nucleation by means of optical microscopy. We also clarified that heterogeneous nucleation is a probabilistic phenomenon by confirming that “induction time of nucleation (τi)” did not depend on CNA. We established a method to obtain reliable I and τi by adding NA which has been a difficult problem in polymer science. |
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