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Highly transparent polymer substrates for flexible displays using semi-interconnected interpenetrating polymer
Myeon-Cheon Choi1, Mijeong Han, Il Kim
1Department of Polymer Science and Engineering, Pusan National University, Busan 609-735, Korea.
Journal of Nanoscience and Nanotechnology
|December 9, 2010
Summary
New semi-interconnected interpenetrating polymer networks (SIPNs) offer excellent optical transparency and flexibility. These novel polymer films show promise as substrates for advanced flexible display applications.
Area of Science:
- Polymer Science
- Materials Science
- Organic Electronics
Background:
- Semi-interconnected interpenetrating polymer networks (SIPNs) combine properties of different polymer systems.
- Developing flexible and transparent substrates is crucial for next-generation electronic devices.
Purpose of the Study:
- To synthesize and characterize novel semi-interconnected interpenetrating polymer networks (SIPNs) for potential use as flexible display substrates.
- To investigate the optical, thermal, and mechanical properties of SIPNs based on unsaturated polyurethane (UP) and styrene/acrylate monomers.
Main Methods:
- Synthesis of SIPN films with a 50 wt% UP ratio using styrene and acrylate monomers.
- Characterization of optical transmittance, glass transition temperature (Tg), and flexibility.
- Evaluation of electrical and optical properties of Indium Tin Oxide (ITO)-coated SIPN films.
Main Results:
- SIPN films demonstrated over 90% optical transmittance at 400 nm.
- Glass transition temperatures (Tg) ranged from 100 to 135 °C, tunable by monomer selection.
- SIPNs exhibited superior flexibility compared to rigid polymers due to homogeneous urethane dispersion.
- ITO-grown SIPN films showed good electrical and optical properties below Tg.
Conclusions:
- The synthesized SIPNs possess excellent optical transparency and mechanical flexibility.
- These SIPN films are promising candidates for flexible display substrates, offering a balance of desirable properties.
