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Crosslinking of an ethylene-glycidyl methacrylate copolymer with amine click chemistry

Massimiliano Mauri (Institutionen för kemi och kemiteknik, Polymerteknologi) ; Nina Tran (Institutionen för kemi och kemiteknik, Polymerteknologi) ; Oscar Prieto ; Thomas Hjertberg ; Christian Müller (Institutionen för kemi och kemiteknik, Polymerteknologi)
Polymer (0032-3861). Vol. 111 (2017), p. 27-35.
[Artikel, refereegranskad vetenskaplig]

Commonly used crosslinking methods for polyethylenes result in the release of harmful by-products. Here, we demonstrate that an epoxy-bearing polyethylene copolymer, which contains 8 wt% glycidyl methacrylate, can be efficiently crosslinked without by-product formation. Click chemistry based on multifunctional amine curing agents, which carry at least two functional groups separated by a flexible spacer, was used to prepare thermosets. Compounding of the crosslinker and copolymer through extrusion at 120 °C could be carried out without onset of the curing reactions. Careful adjustment of the curing time and temperature, ranging from 20 to 120 min and 160–200 °C, resulted in a high network density of at least 2.8 crosslinks per 1000 carbons at a curing agent stoichiometry of as little as 0.5 wt%.

Nyckelord: Amine; Crosslinking; Epoxy; Glycidyl methacrylate; Polyethylene copolymer



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Denna post skapades 2017-03-03. Senast ändrad 2017-04-19.
CPL Pubid: 248399

 

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