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Preparation and Electrical Properties of Silicone Composite Films Based on Silver Nanoparticle Decorated Multi-Walled Carbon Nanotubes

机译：基于银纳米粒子的硅氧烷复合膜的制备和电性能装饰多壁碳纳米管

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摘要

The electrical properties of silicone composite films filled with silver (Ag) nanoparticle-decorated multi-walled carbon nanotubes (MWNT) prepared by solution processing are investigated. Pristine MWNT is oxidized and converted to the acyl chloride-functionalized MWNT using thionyl chloride, which is subsequently reacted with amine-terminated poly(dimethylsiloxane) (APDMS). Thereafter, APDMS-modified MWNT are decorated with Ag nanoparticles and then reacted with a poly(dimethylsiloxane) solution to form Ag-decorated MWNT silicone (Ag-decorated MWNT-APDMS/Silicone) composite. The morphological differences of the silicone composites containing Ag-decorated MWNT and APDMS-modified MWNT are observed by transmission electron microscopy (TEM) and the surface conductivities are measured by the four-probe method. Ag-decorated MWNT-APDMS/Silicone composite films show higher surface electrical conductivity than MWNT/silicone composite films. This shows that the electrical properties of Ag-decorated MWNT-APDMS/silicone composite films can be improved by the surface modification of MWNT with APDMS and Ag nanoparticles, thereby expanding their applications.
机译：研究了填充有溶液加工制备的银（Ag）纳米粒子装饰的多壁碳纳米管（MWNT）的硅氧烷复合膜的电性能。使用亚硫酰氯氧化并将原始MWNT氧化并转化为酰氯官能化的MWNT，随后与胺封端的聚（二甲基硅氧烷）（APDMS）反应。此后，APDMS改性的MWNT用Ag纳米颗粒装饰，然后与聚（二甲基硅氧烷）溶液反应以形成Ag装饰的MWNT硅氧烷（Ag装饰MWNT-APDMS /硅氧烷）复合材料。通过透射电子显微镜（TEM）观察含有Ag装饰MWNT和APDMS改性的MWNT的硅氧烷复合材料的形态学差异，并通过四探针方法测量表面电导率。 AG装饰的MWNT-APDMS /硅胶复合薄膜显示比MWNT /硅胶复合薄膜更高的表面电导率。这表明通过具有APDMS和Ag纳米颗粒的MWNT的表面改性，可以提高Ag装饰的MWNT-APDMS /硅氧烷复合膜的电性能，从而扩展其应用。

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