Preparation of supramolecular thermally repairable elastomer by crosslinking of maleated polyethylene‐octene elastomer with 3‐amino‐1,2,4‐triazole

Abstract

Supramolecular hydrogen bonded elastomer, exhibiting thermally triggered shape memory effect as well as thermally triggered healing property, was prepared by crosslinking of maleated polyethylene‐octene elastomer (mPOE) with 3‐amino‐1,2,4‐triazole (ATA) via melt mixing method.

Triple-shape memory effects of modified semicrystalline ethylene–propylene–diene rubber/poly(ε-caprolactone) blends

“…The spectrum of A-EPDM showed peaks at 1640 cm À1 and 1526 cm À1 corresponding to amide groups and at 1728 cm À1 corresponding to AC@O of hydrogen-bonded carboxylic acid groups. These results confirmed that maleic anhydride group of mEPDM reacted with the amino group of ATA to form extensive hydrogen bonding interactions between modified EPDM chains, as discussed in our previous articles [8,27].…”

“…2(a) shows the functionalization of mEPDM with ATA and the speculative model for hydrogen bonding interactions between A-EPDM and PCL is shown in Fig. 2(b) [8]. This model intended to describe supramolecular hydrogen bonding interactions (black and blue color) between A-EPDM chains and hydrogen bonding interactions between A-EPDM and PCL chains (red color).…”

“…SMPs got significant attention due to their practical applications in medical devices, self-healing materials, actuators, sensors and the aerospace industry [6][7][8][9]. SMPs require two structural features: cross-links and reversible phase.…”

“…In this study, we developed T-SMPs by melt blending of poly(e-caprolactone) (PCL) with supramolecular hydrogen-bonded semicrystalline ethylene-propylene-diene rubber (A-EPDM), prepared by crosslinking of semicrystalline maleated ethylenepropylene-diene terpolymer (mEPDM) with 3-amino-1,2,4-triazole (ATA) [8,25]. It was expected that PCL would have a certain degree of compatibility with A-EPDM via hydrogen bonding interactions, which may allow the A-EPDM/PCL blend system to form a physically crosslinked network structure containing two crystalline phases.…”

Supramolecular thermoplastics and thermoplastic elastomer materials with self-healing ability based on oligomeric charged triblock copolymers

“…[1][2][3] Several examples of supramolecularly crosslinked thermoplastic elastomers have been reported previously. The crosslinks can for example be formed by multiple hydrogen bonds, [4][5][6][7][8][9][10][11][12][13][14][15] π-π stacking interactions, 16,17 ionic interaction [18][19][20][21] or metal-ligand interaction. [22][23][24][25] Supramolecular materials based on self-assembly of oligopeptides 26 and nucleobases 27 have also been reported.…”