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Título: | Structure and mechanical properties of nylon 6.12 prepared by temperature slope crystallization. I. Crystallization of oriented spherulitic textures |
Autor: | Yoshida, T.; Asano, T.; Matsuura, M.; Miyashita, N.; Kitabatake, J.; Hatanaka, I.; Seri, K.; Baltá Calleja, Francisco José CSIC ORCID; Giri, L. | Fecha de publicación: | 1997 | Editor: | Taylor & Francis | Citación: | Journal of Macromolecular Science - Physics 36: 789-798 (1997) | Resumen: | Oriented spherulitic textures of a rod-shaped nylon 6.12 sample were crystallized by the temperature slope method. Crystallization conditions were compared by changing temperatures and growth rates. Three types of textures (negative spherulites, positive spherulites, and spherulitic aggregates) were observed by this method. The negative textures appeared when the growth rate was less than 0.1 mm/h. Crystalline orientation and mechanical properties of the textures were investigated by x-ray diffraction and microhardness measurements, respectively. The hydrogen-bonded (010) planes were perpendicular to the growth direction in the negative spherulite, while they were parallel to the growth direction in the positive spherulite. In the spherulitic aggregates, the b axis was parallel to the growth direction, while the (010) planes formed roughly an angle of 45° with the growth direction. Due to the orientation of the hydrogen-boned planes, the negative texture exhibited an anisotropy, with hardness values of 106 MPa and 137 MPa when measured perpendicular or parallel to the growth direction, respectively. | Descripción: | 10 pags., 5 figs., 2 tabs. | Versión del editor: | http://dx.doi.org/10.1080/00222349708212402 | URI: | http://hdl.handle.net/10261/224167 | DOI: | 10.1080/00222349708212402 | Identificadores: | doi: 10.1080/00222349708212402 issn: 0022-2348 |
Aparece en las colecciones: | (CFMAC-IEM) Artículos |
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Structure and mechanical.pdf | 931,85 kB | Adobe PDF | Visualizar/Abrir |
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