2016 Fiscal Year Final Research Report
Novel morphology of nano-oriented crystals with high performance of polymers
| Project/Area Number |
26410222
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Polymer/Textile materials
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| Research Institution | Hiroshima University |
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Principal Investigator |
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| Co-Investigator(Renkei-kenkyūsha) |
OKADA Kiyoka 広島大学, 総合科学研究科, 特任准教授 (70618967)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Keywords | 高分子 / 伸長 / 結晶化 / ナノ / 配向 / 結晶 / 高性能 |
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| Outline of Final Research Achievements |
We studied the elongational crystallization from the supercooled melt by using polyesters, polyamide, fluoroplastics and isotactic polypropylene (iPP). We made clear that the novel morphology of “Nano-oriented crystals; NOC” was formed universally in the elongational crystallization when the elongational strain rate (ε) becomes larger than a critical one (ε*). The NOC of polyesters showed the morphology of three-dimensional orientation. We clarified that an important role of primary structure of polymer in NOC formation. The structure of NOC of all materials showed the most stable phase and showed high performance such as high heat resistance and so on. The ε* became significantly small and the crystallization into NOC became much easier in the case that the sliding diffusion of polymer chain is easy.
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| Free Research Field |
高分子物理学
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