A bio-based multi-functional composite film based on graphene and lotus fiber

Lightweight Epoxy/Cotton Fiber-Based Nanocomposites with Carbon and Fe3O4 for Electromagnetic Interference Shielding

“…Cellulose fibers are renewable natural materials with abundant reserves, which are frequently involved in paper and pulp making industries. 26 The superior biodegradability, hydrophilicity, and low toxicity of the papers made from cellulose fibers make them one of the prospective substrates for EMI shielding composites. 7 , 8 , 15 , 27 , 28 In general, the key factor to endow cellular paper with conductivity is the addition of conductive additives, such as conductive nanoparticles or fibers, among which carbon-based materials, like carbon black (CB), carbon nanotubes (CNTs), graphene nanosheets (GNPs), and carbon fibers (CFs), are usually used.…”

“…Cellulose fibers are renewable natural materials with abundant reserves, which are frequently involved in paper and pulp making industries . The superior biodegradability, hydrophilicity, and low toxicity of the papers made from cellulose fibers make them one of the prospective substrates for EMI shielding composites. ,,,, In general, the key factor to endow cellular paper with conductivity is the addition of conductive additives, such as conductive nanoparticles or fibers, among which carbon-based materials, like carbon black (CB), carbon nanotubes (CNTs), graphene nanosheets (GNPs), and carbon fibers (CFs), are usually used. ,− CNTs are one-dimensional carbon materials with a high aspect ratio, which have been chosen as an effective nanoscale functional filler to produce polymer- or natural cellulose fiber-based conductive nanocomposites due to their exceptional electric conductivity, thermal stability, and mechanical properties. − GNPs are two-dimensional carbon nanosheets that are also frequently used in the fabrication of conductive nanocomposites because of their super high specific surface area, exceptional carrier mobility, and excellent ballistic electron transport property. ,,− Typically, carbon-filled cellulose composite papers derived from a facile papermaking technology are known to be eco-friendly materials, compared with the ionic or toxic polar solvents involved in fabricating processes. , Lee et al prepared a series of multiwalled carbon nanotube (MWCNT)-coated cellulose papers by using the dip-coating process.…”

Electromagnetic Shielding and Flame Retardancy of Composite Films Constructed with Cellulose and Graphene Nanoplates

“…Some cellulose/GE films with excellent EMI shielding performance have been fabricated by vacuum filtration of cellulose nanofiber/GE suspensions [ 31 , 32 ] or by employing GE to decorate porous cellulose aerogels [ 26 ]. Based on the above-mentioned solution regeneration method, lotus fiber/GE composite films have been prepared by Cheng et al [ 33 ]. The resulting composite films showed high electrical conductivity, excellent EMI SE, and an ability to generate heat.…”

“…In this study, GE nanoplates with well-ordered arrangements were introduced into cellulose films to fabricate a multifunctional material with excellent EM shielding and flame retardancy. GE nanoplates were added before cellulose dissolution in an ionic liquid, 1-allyl-3-methylimidazolium chloride ([Amim]Cl), that has been used for dissolving various natural cellulose fibers [ 33 ]. The resulting cellulose/GE composite films were obtained by regeneration using a coagulation bath and controlled drying.…”

Preparation and transmission characteristics of high-pass woven fabrics

“…For example, carbon nanotube, carbon nanofiber, graphene, and other carbon materials were used to fabricate FSFs because of their excellent electrical conductivity, which makes them good substitutes for metal fibers. [28][29][30] Silver nanowire and MXene have better shielding effectiveness, as well as thermal conductivity, antisepsis, bacteriostasis, fireproofing, and other excellent features. 31,32 Due to structural controllability, weaving flexibility, softness, and washability, woven fabric is the preferred option of military and civilian FSF.…”