High-Thermal-Stability and High-Thermal-Conductivity Ti3C2Tx MXene/Poly(vinyl alcohol) (PVA) Composites

• Published in: ACS omega Vol. 3; no. 3; pp. 2609 - 2617
• Main Authors: Liu, Rui, Li, Weihua
• Format: Journal Article
• Language: English
• Published: American Chemical Society 05-03-2018
• ISSN: 2470-1343
• DOI: 10.1021/acsomega.7b02001

MXenes, a new family
of two-dimensional materials, have recently
attracted increasing attention due to their unique properties for
a wide range of potential applications. Herein, we synthesize Ti
3
C
2
T
x
/poly(vinyl alcohol)
(PVA) composites and investigate the effects of the thermal properties
of MXene by temperature-dependent Raman spectroscopy and polarized-laser
power-dependent Raman spectroscopy. Compared to the Ti
3
C
2
T
x
MXene, the PVA significantly
improves the thermal stability of Ti
3
C
2
T
x
by reducing the thermal coefficient of the
E
g
1
mode from −0.06271 to −0.03357
cm
–1
/K, which is attributed to the strong Ti–O
bonds formed between the MXene and PVA polymer confirmed by the X-ray
photoelectron spectroscopy results. Meanwhile, the thermal conductivities
of Ti
3
C
2
T
x
and Ti
3
C
2
T
x
/PVA composites
reach as high as about 55.8 and 47.6 W/(m K), respectively. Overall,
this work will contribute to extend the MXene applications in terms
of polymer-based nanocomposites and improve the reliability of the
related devices effectively.