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Printed ionic-covalent entanglement hydrogels from carrageenan and an epoxy amine
RSC Advances
2014
Volume 4, Issue 72, Pages 38088-38092
Carrageenan/epoxy amine ionic-covalent entanglement hydrogels were fabricated on a 3D printer. The thermal gel transition behaviour of the biopolymer kappa-carrageenan was exploited to fix the shape of the patterned ink until a covalent polymer network formed by epoxy amine addition chemistry. The printed hydrogels display a work of extension value of 1.4 ± 0.3 MJ m−3.