Synthesis of biobased polyphenols for preparing phenolic polyurethanes with self-healing properties. (August 2022)

• Record Type: Journal Article
• Authors: Lin, Yamei; Yan, Ruyu; Zhang, Yan; Yang, Xiaohua; Ding, Haiyang; Xu, Lina; Li, Shouhai; Li, Mei
• Is Part Of: Polymer testing. Volume 112(2022)
• Publication Date: 2022-08
• Subjects: Eugenol -- Thiols -- Biobased polyphenols -- Self-healing polyurethanes -- Reversible covalent bonds; Polymers -- Testing -- Periodicals; Polymères -- Tests -- Périodiques; 620.1920287
• DOI: 10.1016/j.polymertesting.2022.107644
• Languages: English
• ISSNs: 0142-9418

Abstract

Abstract: Biomass eugenol derived polyols with two or three functionalities were synthesized and used for the preparation of self-healing polyurethanes PU-2SH and PU-3SH, respectively. The structure of PU-2SH and PU-3SH were characterized by Fourier transition infrared spectroscopy (FTIR). Variable temperature FTIR and swelling test were carried out to analysis the self-healing behavior and determine the self-healing temperature of PU-2SH and PU-3SH. The thermal stability, dynamic mechanical properties, swelling performance and self-healing performance of the prepared PU-2SH and PU-3SH were studied in detail. Compared with PU-2SH, PU-3SH showed higher stability, Tg and storage modulus, and weaker self-healing abilities. Highlights: Thiols were used to obtain eugenol derived polyphenols through thio-ene reactions at room temperature. Eugenol derived bio-based polyurethanes were prepared. The polyurethanes are equipped with self-healing ability without introducing additional reversible covalent bonds.