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Flexible and colorless shape memory polyimide films with high visible light transmittance and high transition temperature
- Source :
- Smart Materials and Structures. 28:055031
- Publication Year :
- 2019
- Publisher :
- IOP Publishing, 2019.
-
Abstract
- Colorless shape memory polyimide (CSMPI) has potential applications in broad fields, especially in advanced optoelectronics due to the excellent optical transparency, shape memory effect and high temperature resistance. In this work, high flexible dianhydrides and fluorine-containing diamines were used to synthesize CSMPI, which simultaneously combined great shape memory performance with high optical transparency. The effects of monomer ratios and imidization temperatures on the molecular structure and properties were investigated. Moreover, the CSMPI film possesses a higher glass transition temperature (T g) of 234 °C, compared with the reported transparent shape memory polymers. Most importantly, the transmittance of CSMPI film is 87%–90% at 450–800 nm, meeting the requirements of heat resistance and transmittance of the substrate. Both shape recovery and shape fixity are over 97%. Flexible and colorless CSMPI films severed as substrates provide more potential in optoelectronic devices such as OLED and OPV, etc.
- Subjects :
- 010302 applied physics
Materials science
business.industry
Transition temperature
02 engineering and technology
Substrate (electronics)
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
Atomic and Molecular Physics, and Optics
Shape-memory polymer
Mechanics of Materials
0103 physical sciences
Signal Processing
Transmittance
OLED
Optoelectronics
General Materials Science
Electrical and Electronic Engineering
0210 nano-technology
business
Glass transition
Polyimide
Civil and Structural Engineering
Visible spectrum
Subjects
Details
- ISSN :
- 1361665X and 09641726
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Smart Materials and Structures
- Accession number :
- edsair.doi...........c27285259e2da153572062b0507307ed