Hwang, Jun Yeon Lim, Ae Ran Chang, Jin-Hae 2026-02-03T09:30:28Z 2026-02-03T09:30:28Z 2026-02-02 2026-01 https://pubs.kist.re.kr/handle/201004/154177 Aromatic polyimides (PIs) are super engineering polymers with excellent mechanical properties and thermal stability, making them suitable for applications in semiconductor devices, displays, and electronic materials. In this study, a poly(amic acid) (PAA) was synthesized from dianhydride 4,4 '-biphthalic anhydride and diamine N,N '-[2,2 '-bis(trifluoromethyl)-4,4 '-biphenylene]bis(4-aminobenzamide) monomers, and a hybrid PAA was prepared by dispersing a complex filler using a solution intercalation method. The PAA hybrid solution was thermally imidized under various heat treatment conditions to obtain PI nanocomposite films. A novel complex filler containing both clay and graphene was synthesized through organic surface modification to improve compatibility and miscibility with the PI matrix. This dual-filler system was designed to enhance the overall performance of the PI hybrid films by exploiting the synergistic effects of both fillers. In this study, a C8-complex filler composed of octyl-modified montmorillonite and octyl-functionalized graphene was utilized. PI hybrid films were fabricated by dispersing the C8-complex filler into the PI matrix at various loadings ranging from 0 to 2.0 wt%. The effects of C8-complex filler content on the dispersion morphology, thermomechanical properties, and optical transparency of the resulting PI hybrid films were systematically investigated. English Royal Society of Chemistry Organoclay/functionalized-graphene dual-filler complex for high-performance polyimide nanocomposites Article 10.1039/d5ra08198j 1 RSC Advances, v.16, no.1, pp.453 - 463 RSC Advances 16 1 453 463 Y scie scopus 001652352900001 2-s2.0-105026344469 Chemistry, Multidisciplinary Chemistry Article COMPOSITES MORPHOLOGY COLORLESS FILMS