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- Title
Crystallization/Melting Kinetics and Morphological Analysis of Polyphenylene Sulfide.
- Authors
Yoshitomo Furushima; Masaru Nakada; Yuki Yoshida; Kazuyuki Okada
- Abstract
Crystallization and melting kinetics of polyphenylene sulfide (PPS) are determined using fast scanning calorimetry. The temperature dependence of half-time crystallization of isothermally melt-crystallized PPS shows a downward convex curve with a minimum at 160 °C. The minimum crystallization half-time is about 3 s. The analysis of heating rate dependence of the melting temperature reveals a zero-entropy-production melting temperature of the sample. The microstructure of the sample, which is prepared by fast scanning calorimetry, is investigated by small-angle X-ray scattering and polarizing optical microscopy. The crystallinity and lamellar thickness of the sample annealed for 400 s decrease with decreasing crystallization temperature. The size of spherulites becomes small as the isothermal temperature is decreased. Transcrystalline morphology is observed near the surface between the sample and nitrogen gas at a crystallization temperature of 120 °C. The thickness of the transcrystalline layer disappears as the isothermal temperature is increased.
- Subjects
CRYSTALLIZATION; POLYPHENYLENE sulfide; TEMPERATURE effect; CALORIMETRY; MICROSTRUCTURE; SMALL-angle X-ray scattering
- Publication
Macromolecular Chemistry & Physics, 2018, Vol 219, Issue 2, p1
- ISSN
1022-1352
- Publication type
Article
- DOI
10.1002/macp.201700481