Oxidative chemical depolymerization of thermoset epoxy resin for green recycling

Recovery of Industrial Wastes as Fillers in the Epoxy Thermosets for Building Application

“…Based on the evaluation of the executed accelerated chemical resistance test in Table 6, it is obvious, from Figures 13-15, that no damage to the structure of the epoxy composites or their surface occurred due to exposure to NaOH, NaCl or distilled water. Regarding the methods using liquid-phase decomposition, supercritical or subcritical fluid decomposition and peracid decomposition have been widely investigated [53][54][55][56][57]. From the results of the test, it is obvious that epoxy resins showed poor resistance to acetic acid solutions and hydrogen peroxide.…”

A mild and efficient oxidative degradation system of epoxy thermosets: full recovery and degradation mechanism

“…12,13 In comparison, oxidative degradation has significant advantages in energy efficiency which can be performed at atmospheric pressure with a temperature lower than 90 °C. [14][15][16][17][18][19][20][21][22][23][24][25] Use of common oxidants or catalysts has been reported for the degradation of EP including hydrogen peroxide, 14,16,25 nitric acids, 18,21,22,24 ruthenium trichloride, 15 sodium hypochlorite, 19 potassium permanganate, 20 and so on. Among these, hydrogen peroxide is preferred because of its high redox potential and clean process with water as the only by-product.…”

Exploiting valuable supramolecular materials from waste plastics

“…Previously, the recovery strategies mainly focused on breaking down thermosets to recycle reinforcing fibers but neglected further utilization of the degraded products. [19][20][21] Recent developments reported that the degraded products can be used as additive components, but the performances of final materials might be weakened in high addition of degraded products. [22][23][24] Furthermore, dense cross-linked networks and various C-C, C-O and C-N bonds of EP make it extremely difficult to recover chemicals or polymers with high purity Exploiting novel and high-performance materials from post-consumer wastes is an innovative and far-reaching work whereas it has been manifested to be extremely challenging.…”