Preparation and Properties of Polyimide Composite Membrane with High Transmittance and Surface Hydrophobicity for Lightweight Optical System.

ABSTRACT: Polyimide membranes have excellent physiochemical properties which make them valuable materials for optical area. However, common aromatic polyimide membrane trend to show low transmittance in visible region because of the charge-transfer complex (CTC) in molecular structures. Moreover, it's trending to show high moisture uptakes because of the hydrophilic imide rings in molecular structure. In this work, a polyimide composite membrane with SiO₂ antireflective membrane on both sides was prepared. High transmittance (93% within 500~800 nm) and surface hydrophobicity was realized simultaneously. The polyimide composite membrane showed great optical homogeneity. The SiO₂ antireflective membranes on polyimide substrate were prepared through a simple and efficient sol-gel

SUBMITTER: Yin J 

PROVIDER: S-EPMC9230139 | biostudies-literature | 2022 Jun

REPOSITORIES: biostudies-literature