2024-03-28T21:19:59Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/2113672021-10-25T09:06:14Zcom_10261_56com_10261_3col_10261_309
DIGITAL.CSIC
author
Yue, Hangbo
author
Fernández-Blázquez, J. P.
author
Vilatela, Juan J.
author
Pérez, Ernesto
2020-05-14T10:32:01Z
2020-05-14T10:32:01Z
2019
Polymer Crystallization 2 (2019)
http://hdl.handle.net/10261/211367
10.1002/pcr2.10081
The effects of high loading of carbon nanotube (CNT) fibers on the morphological, thermal, and crystallization properties of polylactic acid (PLA) in PLA-CNT fiber composites are investigated. The fabrication methods ensure full impregnation of the fiber by PLA and formation of a large fiber/polymer interface, resulting in an oriented transcrystalline (TC) layer of PLA on the fiber surface. The presence of TC layer in the composite leads to increased PLA thermal stability, higher crystallinity, and faster nucleation. However, the crystal growth rate of TC and bulk spherulite is independent of the type of nucleation. In addition, real-time variable-temperature synchrotron wide-angle X-ray scattering and fiber 2D-wide-angle X-ray diffraction analyses reveal that crystals from either pure PLA or PLA on the fiber surface develop a thermodynamically stable ¿ phase of PLA when isothermally crystallized at 110 °C. Furthermore, PLA crystals and long spacing lamellae are preferentially orientated and packed parallel to the fiber axis.
openAccess
CNT fiber
Crystallization
Interface
Polylactic acid
Polymer solution crystallization
Synchrotron X-ray
Transcrystallinit
Morphology, thermal, and crystallization analysis of polylactic acid in the presence of carbon nanotube fibers with tunable fiber loadings through polymer infiltration
artículo
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URL
https://digital.csic.es/bitstream/10261/211367/1/Polymer%20Crystallization.pdf
File
MD5
409755cf48322210b2f470aeefcf74b0
3491590
application/pdf
Polymer Crystallization.pdf