Construction of multifunctional MoSe2 hybrid towards the simultaneous improvements in fire safety and mechanical property of polymer

Junling Wang; Chao Ma; Xiaowei Mu; Wei Cai; Longxiang Liu; Xia Zhou; Weizhao Hu; Yuan Hu

doi:10.1016/j.jhazmat.2018.03.003

Construction of multifunctional MoSe₂ hybrid towards the simultaneous improvements in fire safety and mechanical property of polymer

J Hazard Mater. 2018 Jun 15:352:36-46. doi: 10.1016/j.jhazmat.2018.03.003. Epub 2018 Mar 8.

Authors

Junling Wang¹, Chao Ma¹, Xiaowei Mu¹, Wei Cai¹, Longxiang Liu¹, Xia Zhou¹, Weizhao Hu², Yuan Hu¹

Affiliations

¹ State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China.
² State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China. Electronic address: hwz1988@ustc.edu.cn.

PMID: 29571027
DOI: 10.1016/j.jhazmat.2018.03.003

Abstract

Organic modification of MoSe₂ sheets is firstly achieved by Atherton-Todd reaction, aiming at the acquisition of multifunctional MoSe₂ hybrid. Simultaneous enhancements in fire safety and mechanical property of thermalplastic polyurethane (TPU) are obtained with the presence of this hybrid. Strong interfacial interactions between the functionalized MoSe₂ sheets and TPU can be obtained, making more efficient load transfer from the weak polymer chains to the robust sheets. Besides, more coherent barrier network may be formed in polymer matrix, restraining the diffusion of decomposed fragments and reducing the supply for combustion fuel. Consequently, the decreases in heat release are observed for polymer composites. Notably, the releases of toxic gases, such as HCN and CO, are also suppressed by this barrier network, resulting in the reductions in fire toxicity. This work may open a new door for the functionalization of MoSe₂ sheets and evoke significant developments in its promising applications.

Keywords: Barrier network; Fire safety; Fire toxicity; Mechanical property; Organically functionalized MoSe(2) sheets.