Polyimide/mica (PI/mica) hybrid films were prepared from pyromellitic dianhydride/4,4-bis(3-aminophenoxy)biphenyl (PMDA/4,3-BAPOBP) and mica in a solution of N, N-dimethylacetamide. The structure–property relationships of the composites were studied by means of scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, ultraviolet–visible spectroscopy and differential scanning calorimetry. FTIR indicated successful preparation of PI/mica hybrid films. XRD and SEM results indicated that the mica was well dispersed in the PI matrix. The dependence of morphology, glass transition temperatures (Tg), dielectric properties and mechanical properties at room temperature of the hybrid films on the content of mica was discussed. It was observed that Tg, the breakdown strength and tensile strength of the hybrid films, could be simultaneously increased when the mica content was lower than 8 wt-%. Meanwhile, the dielectric constant and dielectric loss of PI/mica hybrid films increased with the increase in the mica content.
TangQY, ChanYC, WongNB, . Surfactant-assisted processing of polyimide/multiwall carbon nanotube nanocomposites for microelectronics applications. Polym Int.2010;59:1240–1245. doi: 10.1002/pi.2855
5.
AliasA, AhmadZ, IsmailAB.Preparation of polyimide/Al2O3 composite films as improved solid dielectrics. Mater Sci Eng B – Adv.2011;176:799–804. doi: 10.1016/j.mseb.2011.04.001
6.
HuangYX, TianXB, LvSX, . Mechanical and optical characteristics of multilayer inorganic films on polyimide for anti-atomic-oxygen erosion. Appl Surf Sci.2012;258:5810–5814. doi: 10.1016/j.apsusc.2012.02.104
7.
SmirnovaVE, GofmanIV, Ivan'kovaEM, . Effect of single-walled carbon nanotubes and carbon nanofibers on the structure and mechanical properties of thermoplastic polyimide matrix films. Polym Sci Ser A.2013;55:268–278. doi: 10.1134/S0965545X1304007X
8.
YorifujiD, AndoS. Enhanced thermal conductivity over percolation threshold in polyimide blend films containing ZnO nano-pyramidal particles: advantage of vertical double percolation structure. J Mater Chem.2011;21:4402–4407. doi: 10.1039/c0jm04243a
9.
ChangCJ, ChouRL, LinYC, . Effects of backbone conformation and surface texture of polyimide alignment film on the pretilt angle of liquid crystals. Thin Solid Films.2011;519:5013–5016. doi: 10.1016/j.tsf.2011.01.155
10.
KomarovPV, ChiuYT, ChenSM, . Investigation of thermal expansion of polyimide/SiO2 nanocomposites by molecular dynamics simulations. Macromol Theor Simul.2010;19:64–73.
11.
SugumaranCP. Experimental investigation on dielectric and thermal characteristics of nanosized alumina filler added polyimide enamel. J Electr Eng Technol.2014;9:978–983. doi: 10.5370/JEET.2014.9.3.978
12.
FengY, YinJH, ChenMH, . Effect of nano-TiO2 on the polarization process of polyimide/TiO2 composites. Mater Lett.2013;96:113–116. doi: 10.1016/j.matlet.2013.01.037
NiuYA, ZhangX, WuJ, . Catalytic and enhanced effects of silicon carbide nanoparticles on carbonization and graphitization of polyimide films. RSC Adv.2014;4:42569–42576. doi: 10.1039/C4RA04371E
15.
ZhangQ, LiDX, LaiDW, . Preparation and characterization of polyimide/sericite mica composites. Acta Polym Sin.2014;3:369–377.
16.
YanoK, UsukiA, OkadaA. Synthesis and properties of polyimide-clay hybrid films. J Polym Sci Pol Chem.1997;35:2289–2294. doi: 10.1002/(SICI)1099-0518(199708)35:11<2289::AID-POLA20>3.0.CO;2-9
ZhangQ, LiDX, LaiDW, OuBL. Hexadecyltrimethylammonium bromide-modified sericite mica-based polyimide composites: a comparison between in situ polymerization and solution intercalation processes. Macromol Res.2015;23:802–808. doi: 10.1007/s13233-015-3120-3
19.
AhmadMB, GharayebiY, SalitMS, . Effect of SiO2 particles on dispersion of montmorillonite (MMT) in polyimide nanocomposite during thermal imidization. Res Chem Intermed.2015;41:1657–1671. doi: 10.1007/s11164-013-1301-2
20.
TamuraK, YokoyamaS, PascuaCS, . New age of polymer nanocomposites containing dispersed high-aspect-ratio silicate nanolayers. Chem Mater.2008;20:2242–2246. doi: 10.1021/cm702860m
21.
MallakpourS, DinariM. Polymer/organosilica nanocomposites based on polyimide with benzimidazole linkages and reactive organoclay containing isoleucine amino acid: synthesis, characterization and morphology properties. Mater Res Bull.2012;47:2336–2343. doi: 10.1016/j.materresbull.2012.05.033
22.
SamakandeA, HartmannPC, CloeteV, . Use of acrylic based surfmers for the preparation of exfoliated polystyrene-clay nanocomposites. Polymers.2007;48:1490–1499. doi: 10.1016/j.polymer.2006.07.072
23.
ZhangYH, FuSY, LiRKY, . Investigation of polyimide-mica hybrid films for cryogenic applications. Compos Sci Technol.2005;65:1743–1748. doi: 10.1016/j.compscitech.2005.02.015
24.
ParkSJ, LeeEJ, LeeJR, . Preparation and characterization of vapor-grown carbon nanofibers-reinforced polyimide composites by in-situ polymerization. Polymers (Korea).2007;31:117–122.
25.
WangYK, ZhuGM, TangYS, . Mechanical and shape memory behavior of chemically cross-linked SBS/LDPE blends. J Polym Res.2014;131:405–414. doi: 10.1007/s10965-014-0405-8
26.
MaPC, NieW, YangZH, . Preparation and characterization of polyimide/Al2O3 hybrid films by sol–gel process. J Appl Polym Sci.2008;108:705–712. doi: 10.1002/app.27540
