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Alignment of Boron Nitride Nanotubes in Polymeric Composite Films for Thermal Conductivity Improvement
Abstract
Boron nitride nanotube (BNNT)/polyvinyl alcohol (PVA) composite fibers (<5 vol % BNNTs) were fabricated via electrospinning so that all BNNTs became aligned in the fiber casting direction. A several-fibers-thick ensemble of parallel-arranged contacting fibers made a single polymer sheet. Numerous sheets were then stacked in different ways with respect to the BNNT orientation (all fibers in adjacent sheets were either parallel or alternately rotated 90°) to make multilayer films that were finally hot-pressed. Various BNNT textures were reflected by the corresponding differences in the measured thermal conductivities of the resultant films due to anisotropy of thermal transport in the nanotubes. The highest values (0.54 W/mK) were obtained along the long axes of aligned BNNTs. Somewhat lower values (0.38 W/mK) were documented in films with alternately stacked fibers/tubes. The theoretical thermal conductivity values were estimated using the Nielsen’s model. These show good match with the experimental data. The control of high-fraction BNNT (>10 vol %) alignment within the polymeric composites is proposed to be a promising way to further increase the polymeric film thermal conductivities toward wide practical applications.
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Cited by
Boron Nitride Nanotubes and Nanosheets
Golberg, D., Bando, Y., Huang, Y., Terao, T., Mitome, M., Tang, C., & Zhi, C. (2010) · ACS Nano · doi:10.1021/nn1006495 · Cited by 2,341
Self-citationThermal conductivity of polymer-based composites: Fundamentals and applications
Chen, H., Ginzburg, V. V., Yang, J., Yang, Y., Liu, W., Huang, Y., Du, L., & Chen, B. (2016) · Progress in Polymer Science · doi:10.1016/j.progpolymsci.2016.03.001 · Cited by 2,049
Chen, J., Huang, X., Sun, B., & Jiang, P. (2019) · ACS Nano · doi:10.1021/acsnano.8b06290 · Cited by 768
Materials Design for High‐Safety Sodium‐Ion Battery
Yang, C., Xin, S., Mai, L., & You, Y. (2021) · Advanced Energy Materials · doi:10.1002/aenm.202000974 · Cited by 630
Han, J., Du, G., Gao, W., & Bai, H. (2019) · Advanced Functional Materials · doi:10.1002/adfm.201900412 · Cited by 620
Zeng, X., Sun, J., Yao, Y., Sun, R., Xu, J.-B., & Wong, C.-P. (2017) · ACS Nano · doi:10.1021/acsnano.7b02359 · Cited by 523
Lin, Z., Liu, Y., Raghavan, S., Moon, K.-S., Sitaraman, S. K., & Wong, C.-P. (2013) · ACS Applied Materials & Interfaces · doi:10.1021/am401939z · Cited by 469
Xie, B.-H., Huang, X., & Zhang, G.-J. (2013) · Composites Science and Technology · doi:10.1016/j.compscitech.2013.06.010 · Cited by 293
Zhang, T., Wu, X., & Luo, T. (2014) · The Journal of Physical Chemistry C · doi:10.1021/jp5051639 · Cited by 213
Metadata
- Authors
- Terao, T., Zhi, C., Bando, Y., Mitome, M., Tang, C., & Golberg, D.
- Venue
- The Journal of Physical Chemistry C
- Publisher
- American Chemical Society (ACS)
- Published
- 2010-03-18
- Volume
- 114
- Issue
- 10
- Pages
- 4340-4344
- ISSN
- 1932-7447 (ISSN-L)
- 1932-7455
- OpenAlex
- W2042479331
- Cited by
- 220
- References
- 0
- FWCI
- 4.48
- Type
- journal article
- Language
- en
- Open access
- closed
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