@article{Li2023, 
author = {Mukun Li and Yuyao Sun and Dianying Feng and Kunpeng Ruan and Xia Liu and Junwei Gu},
title = {Thermally conductive polyvinyl alcohol composite films via introducing hetero-structured MXene@silver fillers},
year = {2023},
journal = {Nano Research},
volume = {16},
number = {5},
pages = {7820-7828},
keywords = {thermal conductivity, electromagnetic interference shielding, hetero-structured MXene@Ag fillers, polyvinyl alcohol composite films},
url = {https://www.sciopen.com/article/10.1007/s12274-023-5594-1},
doi = {10.1007/s12274-023-5594-1},
abstract = {Ag nanoparticles were in-situ grown on the surface of MXene nanosheets to prepare thermally conductive hetero-structured MXene@Ag fillers. With polyvinyl alcohol (PVA) as the polymer matrix, thermally conductive MXene@Ag/PVA composite films were fabricated by the processes of solution blending, pouring, and evaporative self-assembly. With the same mass fraction, MXene@Ag-III (MXene/Ag, 2:1, w/w) presents more significant improvement in thermal conductivity coefficient (λ) than MXene@Ag, single MXene, Ag, and simply blending MXene/Ag. MXene@Ag-III/PVA composite films show dual functions of excellent thermal conductivity and electromagnetic interference (EMI) shielding. When the mass fraction of MXene@Ag-III is 60 wt.%, the in-plane λ (λ∥), through-plane λ (λ⊥), and EMI shielding effectiveness (EMI SE) are 3.72 and 0.41 W/(m∙K), and 32 dB, which are increased by 3.1, 1.3, and 105.7 times than those of pure PVA film (0.91 and 0.18 W/(m∙K), and 0.3 dB), respectively. The 60 wt.% MXene@Ag-III/PVA composite film also has satisfying mechanical and thermal properties, with Young’s modulus, glass transition temperature, and heat resistance index of 3.8 GPa, 58.5 and 175.3 °C, respectively.}
}