Ultra-fast fabrication of MXene/PVA composite films through glutaraldehyde induced microgel framework

通过戊二醛诱导微凝胶框架超快速制备MXene/PVA复合薄膜

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Abstract

In this study, Ti(3)C(2)T(x)/PVA microgels were assembled through the introduction of glutaraldehyde and PVA into Ti(3)C(2)T(x) colloids. Subsequently, the microgels underwent vacuum-assisted filtration (VAF) and drying processes to fabricate Ti(3)C(2)T(x)/PVA self-assembled films (MPGF). This research effectively reduced VAF time by introducing a small amount of glutaraldehyde. The findings demonstrate that glutaraldehyde's chemical crosslinking prompts the formation of temporary microgel frameworks between Ti3C2Tx and PVA, enhancing water molecule transfer during VAF and improving film formation efficiency. Further analysis links VAF time is related to the particle size distribution of the microgels. Adjusting crosslinking and PVA quantity alters microgel crystalline structure and -OH hydrogen bonds, affecting particle size and VAF time. Additionally, films produced via rapid VAF exhibit promising mechanical properties for practical applications.

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