A Flexible Reversible Material Curing at Room Temperature Based on Diels‐Alder Reversible Reaction Characteristics. Issue 43 (23rd November 2018)

• Record Type: Journal Article
• Authors: Xu, Jianan; Li, Zhiying; Wang, Bao; Liu, Fengya; Liu, Yudong; Liu, Fengqi
• Is Part Of: ChemistrySelect. Volume 3:Issue 43(2018)
• Page Start: 12383
• Page End: 12388
• Publication Date: 2018-11-23
• Subjects: Click chemistry -- Cycloaddition -- IR spectroscopy -- Recycling -- Renewable resources; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/slct.201802907
• Languages: English
• ISSNs: 2365-6549

Abstract

Abstract: Reversible materials have been extensively studied for their good application potential. In this work, a series of materials with thermal reversible properties were synthesized by Diels‐Alder (DA) reaction of furan/BMI. The main structure of the thermoreversible polymer was poly (propylene glycol) diglycidyl ether (PPGGE) which was chain‐extended by furfurylamine. Bismaleimide (BMI) was set as crosslinking agent. The conversion rates of DA reaction and retro‐DA reaction were calculated by Fourier Transform Infrared Spectroscopy. The material could react quickly at room temperature and achieve high conversion rate to 90%. Differential Scanning Calorimetry and Thermogravimetric Analysis were used to study the thermal properties of the materials, and the obvious reversible transformation temperature of the materials occurred in the range of 90 °C to 120 °C. The thermomechanical properties and tensile properties of the materials were obtained by DMA and tensile tests, respectively. Compared to the previous studies, these materials exhibited a relatively high breaking elongation of 230%. Abstract : Diels‐Alder cycloaddition reaction by furfurylated PPG epoxy resin and BMI can carry on at room temperature. The conversion rates of DA/rDA were studied systematically by FTIR. This synthetic material has the properties of thermally reversible recycling and exhibit good flexibility.