Four-Dimensional Printing of Multifunctional Photocurable Resin Based on Waste Cooking Oil
Yan Liu, Mengyu Liu, Xingang Fan, Lei Wang, Jiayi Liang, Xinyan Jin, Ruijie Che, Wan-Ying Ying, Shuoping Chen
Abstract
To provide multifunctional polymer consumables for 4D printing and a new methodology for utilizing waste cooking oil (WCO), a type of photocurable resin based on WCO was synthesized. This WCO-based resin contained epoxy waste oil methacrylate, which is derived from WCO, along with 2-phenoxyethyl acrylate (PHEA) and methacrylic acid (MAA) as monomers, which were obtained with a light-curing 3D printer. The 4D printing photocurable resin based on WCO comprised a polymeric network constructed by WCO, a polymeric PHEA segment, and a polymeric MAA segment. It displayed high flexibility (elongation at break: 230.1%), functional pressure-sensitive adhesion properties (interfacial adhesion toughness: 72.6 J/m2 on wood and 58.4 J/m2 on steel), as well as good thermally induced shape memory performances (deforming and recovering at room temperature; fixing at −12 °C), which could be potentially used for generating products, including wearable devices, intelligent devices, biological supports, folding structures, as well as personalized products such as sticker signs, handmade toys, or ornaments.