In situ sintered silver decorated 3D structure of cellulose scaffold for highly thermoconductive electromagnetic interference shielding epoxy nanocomposites. Issue 40 (7th June 2021)

• Record Type: Journal Article
• Authors: Tran, Thi Tuong Vi; Vo, Dai‐Viet N.; Nguyen, Son Thanh; Luu, Son D. N.; Mofijur, M.; Vu, Canh Minh
• Is Part Of: Journal of applied polymer science. Volume 138:Issue 40(2021)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2021-06-07
• Subjects: composites -- conducting polymers -- mechanical properties -- nanostructured polymers -- thermal properties; Polymers -- Periodicals; Polymerization -- Periodicals; 668.9
• DOI: 10.1002/app.51193
• Languages: English
• ISSNs: 0021-8995

Abstract

Abstract: This study presents a 3‐dimensional (3D) network structure of cellulose scaffold (CS), which was in situ decorated with silver nanoparticles (AgNPs). The scaffold was then infiltrated with epoxy matrix and cured at elevated temperature to sinter the AgNPs; finally, highly thermoconductive epoxy composites (Ag@CS/epoxy) was obtained. The resultant Ag@CS20/epoxy composite reached a thermal conductivity of 2.52 W·m −1 ·K −1 at 2.2 vol% of filler loading, which shows an enhancement of over 11‐folds in the thermal conductivity compared to the neat epoxy. The superb electrical conductivity value of over 53, 691 S·m −1 of the Ag@CS20/epoxy was achieved, which led to exceptional EMI SE values of 69.1 dB. Furthermore, surface temperatures during heating and cooling were also investigated to demonstrate the superior heat dissipating capacity of the Ag@CS/epoxy composite, which can be potentially put an application as thermal dissipating material in the next generation of electronics. Abstract : The 3D structure of sintered silver based polymer composites for thermoconductive EMI shielding materials.