Lee, Bora Han, Hyemi Hahn, Hoh-Gyu Doh, Jeong Mann Park, Se-Hoon Lee, Eunji Lee, Sang-Soo Park, Cheolmin Lim, Ho Sun Lim, Jung Ah 2024-01-19T17:34:33Z 2024-01-19T17:34:33Z 2021-09-05 2020-04-08 1944-8244 https://pubs.kist.re.kr/handle/201004/118735 We demonstrated catechol lipid-based bioresin, which is collected from lacquer trees, to produce conductive pastes that can be processed at low temperatures, which are highly adhesive and multidurable. Our conductive paste, which consists of catechol lipid-based urushiol resin and a multimodal mixture of silver fillers, exhibited stable dispersion with shear thinning properties. The urushiol lacquer induced spontaneous reduction of silver salt at the surface of the silver fillers, thereby contributing to lower the contact resistance between conductive fillers in the electrical conduction. Furthermore, the directional volume shrinkage of the urushiol lacquer matrix in a cross-linking reaction resulted in a highly ordered microstructure of the silver fillers with layer-by- layer stacking of the silver flakes. This structure contributed to the improvement of the electrical contact between fillers as well as excellent mechanical hardness, anti-scratch capability, and the long-term environmental stability of the conductive films. Conductive films based on the silver paste with urushiol lacquer exhibited low electrical resistivity below 4.4 x 10(-5) Omega cm, 5B-class strong adhesion strength, and high hardness exceeding 200 MPa. Finally, we demonstrated the facile room-temperature processability and screen printability of the UL-Ag paste by fabricating a printed antenna and three-dimensional (3D) electrode assembly based on a plastic 3D block. English American Chemical Society ELECTRICALLY CONDUCTIVE ADHESIVES ORIENTAL LACQUER SILVER ENHANCEMENT COMPOSITES URUSHIOL POLYMER FILM AG NANOPARTICLES Ecofriendly Catechol Lipid Bioresin for Low-Temperature Processed Electrode Patterns with Strong Durability Article 10.1021/acsami.0c00199 1 ACS Applied Materials & Interfaces, v.12, no.14, pp.16864 - 16876 ACS Applied Materials & Interfaces 12 14 16864 16876 scie scopus 000526583500094 2-s2.0-85083078095 Nanoscience & Nanotechnology Materials Science, Multidisciplinary Science & Technology - Other Topics Materials Science Article ELECTRICALLY CONDUCTIVE ADHESIVES ORIENTAL LACQUER SILVER ENHANCEMENT COMPOSITES URUSHIOL POLYMER FILM AG NANOPARTICLES catechol lipid urushiol lacquer conducting composite conducting adhesive silver paste