標題: Synthesis of polystyrene@polypyrrole-COOH@Ag (core@shell@shell) microspheres for potential application in anisotropic conductive paste
作者: Wang, Chuan-Jyun
Hung, Pei-Sung
Chou, Shih-Cheng
Chung, Wei-An
Wu, Pu-Wei
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Polystyrene microspheres;Core-shell;Nanoparticle;Multilayer structure;Colloidal processing
公開日期: 15-Mar-2020
摘要: We demonstrate a fabrication scheme for the synthesis of conductive core-shell (core@shell) 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 PS@PPy-COOH microspheres, followed by sensitization and Ag electroless deposition to produce PS@PPy-COOH@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 PS@PPy-COOH@Ag is 10,170 S m(-1). These microspheres show promising potential for anisotropic conductive paste. (C) 2019 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.matlet.2019.127239
http://hdl.handle.net/11536/153898
ISSN: 0167-577X
DOI: 10.1016/j.matlet.2019.127239
期刊: MATERIALS LETTERS
Volume: 263
起始頁: 0
結束頁: 0
Appears in Collections:Articles