高分子の中間相を経由する結晶成長機構について

抄録

  The crystal growth mechanism of polymer has been investigated for a long period but has not been fully understood. In order to understand the crystal growth mechanism, we have investigated the melt-crystallization of poly(buthylene terephthalate) (PBT) by optical microscopy, differential scanning calorimetry and small angle X-ray scattering and have clarified the crystallization temperature dependences of growth rate and lamellar thickness, and the relation between the melting temperature and the lamellar thickness. Since these results cannot be interpreted by the conventional model that polymer crystallized directly from the melt, we have introduced the crystallization model through the mesophase. The attempt clarifies that the crystallization proceeds through the mesophase below 208℃ and directly from the melt above 208℃ in PBT.