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Ti3C2Tx MXene modification using silicane or quaternary ammonium salt via covalent bonding or interaction for high-performance composites
Polymer Composites ( IF 4.8 ) Pub Date : 2023-08-28 , DOI: 10.1002/pc.27704 Guojun Cheng 1, 2, 3 , Ziyue Xuan 1 , Shen Tian 1 , Zhongfeng Tang 4 , Guoxin Ding 1 , Xianglong Wan 1, 2
Polymer Composites ( IF 4.8 ) Pub Date : 2023-08-28 , DOI: 10.1002/pc.27704 Guojun Cheng 1, 2, 3 , Ziyue Xuan 1 , Shen Tian 1 , Zhongfeng Tang 4 , Guoxin Ding 1 , Xianglong Wan 1, 2
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Ti3C2Tx MXene were modified by 3-methacryloxypropyltrimethoxy silane (MPTS) and melamine quaternary ammonium salt (MG). The modification mechanism of MPTS and MG with Ti3C2Tx and the regulation of their surface and interfacial properties were confirmed through a series of tests. Ti3C2Tx@MPTS obtained by hydrolysis and hydroxyl co-polycondensation had a hydrophobic surface and exhibits good dispersion stability. Ti3C2Tx@MG had a strong hydrophilic surface under the dual action of hydrogen bonding and electrostatic assembly, resulting in its surface charge changed from negative to positive. Furthermore, the morphologies of Ti3C2Tx@MPTS and Ti3C2Tx@MG were quite different. Compared with Ti3C2Tx MXene, Ti3C2Tx@MPTS still presents a multi-layer structure, while Ti3C2Tx@MG shows a stripped-off layer/single-layer/partially collapse pattern. This is due to the fact that MPTS mainly modifies Ti3C2Tx MXene by coating, while MG is based on intercalation effect. The two modifiers modify Ti3C2Tx MXene with different effects, endow Ti3C2Tx MXene with different surface and interfacial properties, and then stabilize in the polymer matrix, supercapacitors and electrode materials in different ways.
中文翻译：
使用硅烷或季铵盐通过共价键合或相互作用对 Ti3C2TX MXene 进行改性以获得高性能复合材料
Ti 3 C 2 T x MXene采用3-甲基丙烯酰氧基丙基三甲氧基硅烷(MPTS)和三聚氰胺季铵盐(MG)进行改性。通过一系列试验证实了Ti 3 C 2 T x对MPTS和MG的改性机理及其对表面和界面性能的调节。通过水解和羟基共聚得到的Ti 3 C 2 T x @MPTS具有疏水表面，表现出良好的分散稳定性。Ti 3 C 2 T x @MG在氢键和静电组装的双重作用下具有很强的亲水性表面，导致其表面电荷由负转正。此外，Ti 3 C 2 T x @MPTS和Ti 3 C 2 T x @MG的形貌也有很大不同。与Ti 3 C 2 T x MXene相比，Ti 3 C 2 T x @MPTS仍呈现多层结构，而Ti 3 C 2 T x @MG则呈现剥离层/单层/部分塌陷的格局。这是由于MPTS主要通过包覆对Ti 3 C 2 T x MXene进行改性，而MG则是基于插层效应。两种改性剂对Ti 3 C 2 T x MXene进行不同效果的改性，赋予Ti 3 C 2 T x MXene不同的表面和界面性能，进而以不同的方式稳定在聚合物基体、超级电容器和电极材料中。
更新日期：2023-08-28
中文翻译：
使用硅烷或季铵盐通过共价键合或相互作用对 Ti3C2TX MXene 进行改性以获得高性能复合材料
Ti 3 C 2 T x MXene采用3-甲基丙烯酰氧基丙基三甲氧基硅烷(MPTS)和三聚氰胺季铵盐(MG)进行改性。通过一系列试验证实了Ti 3 C 2 T x对MPTS和MG的改性机理及其对表面和界面性能的调节。通过水解和羟基共聚得到的Ti 3 C 2 T x @MPTS具有疏水表面，表现出良好的分散稳定性。Ti 3 C 2 T x @MG在氢键和静电组装的双重作用下具有很强的亲水性表面，导致其表面电荷由负转正。此外，Ti 3 C 2 T x @MPTS和Ti 3 C 2 T x @MG的形貌也有很大不同。与Ti 3 C 2 T x MXene相比，Ti 3 C 2 T x @MPTS仍呈现多层结构，而Ti 3 C 2 T x @MG则呈现剥离层/单层/部分塌陷的格局。这是由于MPTS主要通过包覆对Ti 3 C 2 T x MXene进行改性，而MG则是基于插层效应。两种改性剂对Ti 3 C 2 T x MXene进行不同效果的改性，赋予Ti 3 C 2 T x MXene不同的表面和界面性能，进而以不同的方式稳定在聚合物基体、超级电容器和电极材料中。
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