Preparation and Characterization of a Novel Self-Healing Transparent Polyimide Film Based on Dynamic Disulfide Bonds
Year: 2024
Type: article
Abstract: Self-healing optically transparent polyimides have potential applications in optoelectronic device fabrication. In this study, for the first time, we successfully prepared a novel self-healing polyimide film containing reversible disulfide bonds through chemical imidization by introducing cystamine as a self-healing functional monomer into the molecular structure of conventional polyimides. The incorporation of cystamine enabled the films to maintain high transmittance (>87%) and tensile strength (>99 MPa). Meanwhile, tensile tests showed that the prepared film with a cystamine content of 50% achieved an excellent self-healing efficiency of up to 91.8%. Stress relaxation tests further revealed that disulfide bonds were rapidly cleaved upon thermal stimulation and the network topology was rearranged to complete the self-healing process. These results suggest that the dynamic covalent polymer network made of aliphatic disulfide bonds presents a new strategy for the development of optically transparent polyimides with excellent self-healing properties.
Source: Polymers
Authors: Xin Li, Yan Zhai, Kai Yang, Jingjing Bai, Yu Qiu, Yulong Wang
Institution: Taiyuan Institute of Technology
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $3,069
OpenAlex ID: W4405292878