Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 6, Issue 15, Pages 13098-13105Publisher
AMER CHEMICAL SOC
DOI: 10.1021/am502962b
Keywords
graphene oxide; alumina; transparent polyimide; barrier; water-vapor-transmission-rate (WVTR)
Funding
- Ministry of Science and Technology of Taiwan [NSC102-2221-E-167-034-MY2, NSC102-2218-E-035-005-MY2]
Ask authors/readers for more resources
Unique two-dimensional alumina nanosheets (Alns) using graphene oxide (GO) as templates are fabricated and successfully incorporated with organo-soluble polyimide (PI) to obtain highly transparent PI nanocomposite films with improved moisture barrier property. The effects of filler types and contents on water vapor transmission rate (WVTR) and transparency of PI are systematically studied. The hydroxyl groups on GO react with aluminum isopropoxide via sol gel process to obtain alumina coverd-GO (Al-GO), and then thermal decomposition is applied to obtain Alns. Alns are the most efficient fillers among others to restrict the diffusion of water vapor within PI matrix and simultaneously maintain the transparency of PI. XRD pattern, TEM, and AFM images confirm the sheet-like morphology of Alns with ultrahigh aspect ratio. With only 0.01 wt % of Alns, the PI nanocomposite film exhibits the most significant reduction of 9596 in WVTR as compared to that of pure PI film. Most importantly, the resultant PI/Alns-0.01 film exhibits excellent optical transparency and high mechanical strength and great thermal stability.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available