Nam, Ki-Ho Kim, Sejeong Song, Jungkun Baek, Seungsu Paek, Sang-Hyon Ku, Bon-Cheol Han, Haksoo 2024-01-20T05:01:52Z 2024-01-20T05:01:52Z 2022-01-25 2016-02 1598-5032 https://pubs.kist.re.kr/handle/201004/124422 Light-colored polyimide hybrids with a quaternary alkylammonium modified montmorillonite, Cloisite(A (R)) 20A (C20A) were successfully synthesized via a solution intercalation method. The structural and morphological features of the PI/C20A hybrids were characterized by Fourier transform infrared (FTIR) spectroscopy, wide-angle X-ray diffraction (WAXD), field emission scanning electron microscopy (FE-SEM), and spherical aberration correction scanning transmission electron microscope (STEM). The dimensional stabilities were strongly dependent upon the chemical and morphological structures which were influenced by the Cloisite(A (R)) 20A loading content. A critical Cloisite(A (R)) 20A concentration was obtained for the evolution of both the structural and physical properties of the PI/C20A hybrids. The dynamic stress behaviors were investigated in situ by using the wafer bending method during thermal imidization of the softbaked PI/C20A hybrid precursor and thermally cured hybrid films using a thin film stress analyzer. The PI/C20A hybrid films exhibited stability at 510 A degrees C, high glass transition and relatively low coefficient of thermal expansion, and an improved solvent resistance capacity. English SPRINGER Dimensionally stable and light-colored polyimide hybrid reinforced with layered silicate Article 10.1007/s13233-016-2021-9 1 MACROMOLECULAR RESEARCH, v.24, no.2, pp.104 - 113 MACROMOLECULAR RESEARCH 24 2 104 113 N scie scopus kci ART002080388 000371255900003 2-s2.0-84954313938 Polymer Science Polymer Science Article RESIDUAL-STRESS BEHAVIOR NANOCOMPOSITE FILMS THIN-FILMS MECHANICAL-PROPERTIES NANOTUBE COMPOSITES PHYSICAL-PROPERTIES HIGH-TEMPERATURE COLORLESS IMIDE)S DIAMINE polyimide Cloisite (R) 20A dimensional stability dynamic stress behavior solvent resistance capacity