Crystallization Behavior of Bisphenol-A Polycarbonate on Nanoparticle Surface
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- Matsuyama Kazuma
- Department of Applied Chemistry & Biochemical Engineering, Faculty of Engineering
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- Aso Masashi
- Department of Applied Chemistry & Biochemical Engineering, Faculty of Engineering
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- Matsuda Yasuhiro
- Department of Applied Chemistry & Biochemical Engineering, Faculty of Engineering
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- Tasaka Shigeru
- Department of Applied Chemistry & Biochemical Engineering, Faculty of Engineering
Abstract
<p>Crystallization behavior and metastable amorphous structure of polycarbonate (PC) slowly cast from tetrahydrofuran (THF) solution was investigated by Differential scanning calorimetry (DSC), X-ray diffraction (XRD) and Fourier transform infrared (FT-IR) spectroscopy. The amorphous structure of PC changed to a different structure under the influence of THF as a polar solvent. We call this different structure metastable amorphous, and similar structures have been found in several polymers other than PC. A metastable amorphous has a different conformation from a normal amorphous structure and becomes a crystal nucleus. That structure was preserved on the surface of alumina nanoparticles by the interaction between different substances. The metastable amorphous preserved on the nanoparticles has a new Tg (We called L-Tg) at 0~ 60̊C, which is lower temperature than normal Tg. Furthermore, these structures were crystallized by a short annealing at 120 ̊C. We report this metastable amorphous structure of PC and its transformation into crystals.</p>
Journal
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- Journal of Fiber Science and Technology
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Journal of Fiber Science and Technology 76 (3), 113-118, 2020-03-10
The Society of Fiber Science and Technology, Japan
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Keywords
Details 詳細情報について
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- CRID
- 1390002184881876224
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- NII Article ID
- 130007808611
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- ISSN
- 21897654
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- Text Lang
- en
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed