材料科学
聚吡咯
聚苯乙烯
聚合
纳米颗粒
扫描电子显微镜
化学工程
透射电子显微镜
胶粘剂
微晶
涂层
复合材料
导电聚合物
纳米技术
聚合物
图层(电子)
冶金
工程类
作者
Chuan-Jyun Wang,Pei-Sung Hung,Shih-Cheng Chou,Wei-An Chung,Pu‐Wei Wu
标识
DOI:10.1016/j.matlet.2019.127239
摘要
We demonstrate a fabrication scheme for the synthesis of conductive core-shell ([email protected]) nanoparticles consisting of polystyrene (PS) microspheres in size of 613 nm with consecutive coatings of functionalized polypyrrole (PPy-COOH) and Ag. The PPy-COOH precursors undergo polymerization on PS microspheres forming [email protected] microspheres, followed by sensitization and Ag electroless deposition to produce [email protected]@Ag microspheres in size of 717 nm. The PPy-COOH serves as the adhesive for intimate bonding of PS and Ag. Images from scanning and transmission electron microscopes confirm a Ag coating of 41–50 nm which is consisted of clustered nanoparticles forming a mono-layered film. From X-ray diffraction pattern, the Ag adopts a polycrystalline fcc structure with grain size of 12 nm. Results from thermal gravimetric analysis indicate a Ag loading of 54 wt%. By four-point-probe, the bulk conductivity for [email protected]@Ag is 10,170 S m−1. These microspheres show promising potential for anisotropic conductive paste.
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