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| Type |
Poster Presentation |
| Area |
Physical Chemistry |
| Room No. |
Exhibition Hall 2+3 |
| Time |
10월 20일 (금요일) 13:00~14:30 |
| Code |
PHYS.P-121 |
| Subject |
The Effect of Nanoparticles on the Stabilization of a Polymer Nanofiber |
| Authors |
taejin kwon, Bong June Sung*
Department of Chemistry, Sogang University, Korea
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| Abstract |
Although polymer nanofibers are considered promising materials due to remarkable stiffness and tensile strength, the instability of the polymer nanofibers is an obstacle to many applications. Recent studies1 showed that when the polymer nanofiber was made of both polymers and nanoparticles (NPs), the stability was enhanced. It remains, however, unanswered how the NPs in the nanofiber could enhance the stability. In this work, we perform molecular dynamic simulations for a polymer nanofiber with NPs and measure the breakup time of the fiber (i.e., how long the nanofiber stays stable before being disrupted). We find that the introduction of NPs into a fiber increases the breakup time of the fiber significantly. We also find that the spatial arrangement of NPs in the fiber depends on the interaction between NPs and polymers: NPs are located at the center (or surface) when the interaction between NPs and polymers is attractive (or repulsive). The spatial arrangement of NPs and attraction between NPs and polymers affect surface tension and viscosity of the fiber, which in turn affect the stability of the polymer nanofiber. Our simulation results are consistent with previous results from continuum mechanics2.
[1] Jeong, J.S. et al., Mechanical properties of electrospun PVA/MWNTs composite nanofibers. Thin Solid Films 515 5136 (2007)
[2] Tomotika, S., Instability of a thread of viscous liquid. Proc. R. Soc. London, Ser. A 150 322 (1935)
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| E-mail |
taejin1112@gmail.com |
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120th General Meeting of the KCS