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Flammability, thermal stability and mechanical properties of polyvinyl alcohol nanocomposites reinforced with delaminated Ti3C2Tx (MXene).

Authors :
Pan, Ying
Fu, Li
Zhou, Qingwei
Wen, Zhenan
Lin, Cheng‐Te
Yu, Jinhong
Wang, Weiming
Zhao, Hongting
Source :
Polymer Composites. Jan2020, Vol. 41 Issue 1, p210-218. 9p.
Publication Year :
2020

Abstract

Herein, Ti3C2Tx (MXene) was synthesized and mixed with polyvinyl alcohol (PVA) to fabricate PVA/MXene nanocomposites. The results confirmed that delaminated MXene was successfully synthesized. The nanocomposites were obtained via casting/evaporation method. The thermal stability was evaluated by thermogravimetric analysis (TGA). For the PVA composites with content of 2 wt% MXene (PVA‐MXene2), the thermal decomposition was retarded by approximately 20°C when the temperature was lower than 350°C compared with that of pure PVA. Moreover, the evolved gas products of the PVA/MXene composite were lower than those of pure PVA. For the first time, the flame retardancy of PVA/MXene nanocomposite was investigated using a microscale combustion calorimeter. The peak heat release rate (PHRR) and total heat release of the PVA composite were reduced by 25.7% and 25.5%, respectively, with 1 wt% of MXene. The temperatures at PHRR of PVA/MXene composites were improved with the addition of MXene. Moreover, the addition of MXene resulted in PVA composites with a higher tensile strength and elongation at break than those of a pure PVA film. The improvements in the flame retardancy, thermal and mechanical properties of PVA/MXene composites should enable a wide range of potential applications of MXenes in polymer matrices. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
02728397
Volume :
41
Issue :
1
Database :
Academic Search Index
Journal :
Polymer Composites
Publication Type :
Academic Journal
Accession number :
141075551
Full Text :
https://doi.org/10.1002/pc.25361