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Design of near-infrared responsive self-healing photocured polyurethane materials with thiourethane bonds.
- Source :
-
European Polymer Journal . Mar2024, Vol. 208, pN.PAG-N.PAG. 1p. - Publication Year :
- 2024
-
Abstract
- [Display omitted] • Preparation of novel photocured polyurethane materials based on thiourethane bonds. • More than 90% self-healing efficiency can be achieved under near infrared light. • The material can be applied to the field of flexible electronic substrates. In this work, a photopolymerizable polyurethane oligomer (PETU) with thiourethane bonds was designed and synthesized. Afterwards, the near-infrared responsive self-healing polyurethane films (PETU-HI-X) were fabricated by photopolymerization using homemade PETU, polydopamine (PDA), and commercially available isobornyl acrylate (IBOA) and 2-hydroxyethyl acrylate (HEA). PETU-HI-X have good photopolymerization and photothermal conversion performance. The as-prepared near-infrared responsive self-healing polyurethane polymer PETU-HI-1.0 exhibited a tensile stress of 1.06 MPa, strain of 1021 %, initial decomposition temperature of 290 °C. In addition, the temperature of the material can rise to more than 100 °C after irradiation with near-infrared light for 3 min, showing excellent photothermal conversion performance, based on which the material shows more than 90 % self-healing efficiency after irradiation with near-infrared light for 30 min. More importantly, the near-infrared responsive self-healing polyurethane polymer PETU-HI-1.0 also has an excellent degradation property. The self-healing polyurethane films have also been used to prepare the flexible electronic device that can be healed and fully restored their conductivity after getting damaged. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00143057
- Volume :
- 208
- Database :
- Academic Search Index
- Journal :
- European Polymer Journal
- Publication Type :
- Academic Journal
- Accession number :
- 175961184
- Full Text :
- https://doi.org/10.1016/j.eurpolymj.2024.112874