TY - JOUR
T1 - Polymorphism of electrospun polyvinylidene difluoride/carbon nanotube (CNT) nanocomposites
T2 - Synergistic effects of CNT surface chemistry, extensional force and supercritical carbon dioxide treatment
AU - Yee, Wu Aik
AU - Kong, Junhua
AU - Zhang, Chao
AU - Liu, Tianxi
AU - Kotaki, Masaya
AU - Lu, Xuehong
PY - 2012/10/12
Y1 - 2012/10/12
N2 - In this work, the effects of single-walled carbon nanotubes (SWCNT) surface chemistry on the polymorphism behaviors of electrospun poly(vinylidene difluoride) (PVDF) nanofibers collected under high extensional force and subsequently treated with supercritical carbon dioxide (SCCO2) are investigated via X-ray diffraction, infrared and Raman spectroscopy. It is found that the SWCNTs with hydroxyl groups (h-SWCNTs) interact with PVDF chains more intensively than the ones with ester groups, and the interaction in couple with the high extensional force promotes the formation of β-form extended-chain crystallites (ECCs). With the SCCO2 treatment, the growth of the β-form ECCs is further promoted in the PVDF/h-SWCNT nanofibers owing to the synergistic effect of the strong confinement effect of h-SWCNT for stabilizing the nuclei of the β-form ECCs and the high pressure applied.
AB - In this work, the effects of single-walled carbon nanotubes (SWCNT) surface chemistry on the polymorphism behaviors of electrospun poly(vinylidene difluoride) (PVDF) nanofibers collected under high extensional force and subsequently treated with supercritical carbon dioxide (SCCO2) are investigated via X-ray diffraction, infrared and Raman spectroscopy. It is found that the SWCNTs with hydroxyl groups (h-SWCNTs) interact with PVDF chains more intensively than the ones with ester groups, and the interaction in couple with the high extensional force promotes the formation of β-form extended-chain crystallites (ECCs). With the SCCO2 treatment, the growth of the β-form ECCs is further promoted in the PVDF/h-SWCNT nanofibers owing to the synergistic effect of the strong confinement effect of h-SWCNT for stabilizing the nuclei of the β-form ECCs and the high pressure applied.
KW - Carbon nanotubes
KW - Electrospinning
KW - Poly(vinylidene difluoride) (PVDF)
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U2 - 10.1016/j.polymer.2012.08.044
DO - 10.1016/j.polymer.2012.08.044
M3 - Article
AN - SCOPUS:84867060563
SN - 0032-3861
VL - 53
SP - 5097
EP - 5102
JO - Polymer
JF - Polymer
IS - 22
ER -