Título:
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X-Ray diffraction study of polyethersulfone polymer, flat-sheet and hollow fibers prepared from the same under different gas-gaps
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Autores:
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Khayet Souhaimi, Mohamed ;
García Payo, María del Carmen
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Tipo de documento:
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texto impreso
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Editorial:
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Elsevier Science BV, 2009-09-15
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/restrictedAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Termodinámica
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Tipo = Artículo
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Resumen:
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Polyethersulfone (PES) hollow fiber membranes were prepared by both wet spinning technique, without gas-gap, and dry/wet spinning technique under different gas-gaps, namely, air, oxygen, nitrogen, carbon dioxide, argon and humid air. All spinning parameters were maintained the same except the type of the gas-gap used. Flat-sheets were prepared by the phase-inversion method using the same polymer solution and water as coagulant. The X-ray diffraction pattern of virgin PES indicated that this polymer is mainly amorphous in nature and X-ray diffraction study revealed quite similar structure for flat-sheets and hollow fibers prepared from the PES polymer. It was observed that the PES hollow fibers prepared with dry/wet spinning technique exhibited some differences in X-ray diffraction spectra showing attenuation of the broad band peak intensity for the hollow fibers prepared under argon and carbon dioxide. The intersegmental distance of polymer chains, d-space, was determined. A value of about 4.77 +/- 0.05 angstrom was obtained. The results provide evidence that the spinning technique do not induce crystallization of hollow fibers.
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En línea:
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https://eprints.ucm.es/id/eprint/26371/1/Khayet42.pdf
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