A TEM study on melt-crystallized poly(butylene terephthalate)
| Autor: | Hiroaki Minami, Norio Manabe, Yoshimitsu Yokota, Tadashi Komoto, Yuya Uegomori |
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| Rok vydání: | 2002 |
| Předmět: |
Materials science
Morphology (linguistics) technology industry and agriculture Isothermal crystallization law.invention Crystal Crystallization temperature Chemical engineering law Transmission electron microscopy Ruthenium tetraoxide Polymer chemistry Crystallization Glass transition Instrumentation |
| Zdroj: | Journal of electron microscopy. 51(1) |
| ISSN: | 0022-0744 |
| Popis: | A study was made to investigate an optimum condition for ruthenium tetraoxide staining of poly(butylene terephthalate) (PBT) with glass transition temperature as low as ca. 23 degrees C for TEM observation of melt-grown PBT crystals. The morphological study of ultrathin sections prepared based on optimum staining at 25 degrees C for 8 h revealed formation of fringed-micellar crystal nuclei in the early stage and folded-chain fringed-micellar crystals in the later stage of isothermal crystallization at 40 degrees C from melt. The fraction of chain-folded crystals increased with increasing crystallization temperature from the quantitative analysis of crystal thickness in comparison with the reported morphology using the replica method. |
| Databáze: | OpenAIRE |
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