Catalytic and Nucleation Study of Ti3C2Tx MXene on Furanic Polyesters
Polyester catalysts are mainly antimony-based compounds for a long time,which have potential heavy-metal hazards.To develop an efficient and environmentally friendly polycondensation catalyst,firstly,a comparative catalytic study of the novel two-dimensional material Ti3C2Tx MXene and the representative antimony-based catalyst Sb2O3 was conducted.The results showed that Ti3C2Tx MXene exhibited significant catalytic activity for the condensation of polyethylene 2,5-furandicarboxylate(PEF)with intrinsic viscosity up to 0.74 dL/g.Secondly,the thermal properties and crystallization kinetics of PEF prepared by both catalysts were investigated using differential scanning calorimetry(DSC).Ti3C2Tx MXene with the heterogeneous nanosheet structure was confirmed as a nucleating agent to enhance the crystallization rate of PEF.Finally,the mechanical investigation showed that the catalyst type did not affect the mechanical properties of PEF,indicating the good compatibility of Ti3C2Tx MXene with PEF.In summary,this work showed that Ti3C2TxMXene is an efficient catalyst/nucleating agent for PEF.
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