Crosslinking of an ethylene-glycidyl methacrylate copolymer with amine click chemistry
Artikel i vetenskaplig tidskrift, 2017

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%.

Amine

Polyethylene copolymer

Crosslinking

Epoxy

Glycidyl methacrylate

Författare

Massimiliano Mauri

Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Nina Tran

Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Oscar Prieto

Borealis AB

Thomas Hjertberg

Borealis AB

Christian Müller

Kemi och kemiteknik, Tillämpad kemi, Polymerteknologi

Polymer

0032-3861 (ISSN)

Vol. 111 27-35

Ämneskategorier

Polymerkemi

Kemiteknik

Drivkrafter

Hållbar utveckling

Styrkeområden

Materialvetenskap

DOI

10.1016/j.polymer.2017.01.010