To facilitate the ongoing transition toward a circular economy, the availability of renewable materials for additive manufacturing becomes increasingly important. Here, we report the successful fabrication of complex shaped prototypes from biobased acrylate photopolymer resins, employing a commercial stereolithography apparatus (SLA) 3D printer. Four distinct resins with a biobased content ranging from 34 to 67% have been developed. All formulations demonstrated adequate viscosity and were readily polymerizable by the UV-laser-based SLA process. Increasing the double-bond concentration within the resin results in stiff and thermally resilient 3D printed products. High-viscosity resins lead to high-resolution prototypes with a complex microarchitecture and excellent surface finishing, comparable to commercial nonrenewable resins. These advances can facilitate the wide application of biobased resins for construction of new sustainable products via stereolithographic 3D printing methods.

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The zeta-potential of monodisperse polystyrene latices as a function of ionic strength is reported. Latices exhibit anomalous electrokinetic behavior:  instead of the expected decrease in mobility with increasing electrolyte concentration, a maximum occurs. In this paper it is shown that both in electrophoresis of dilute dispersions and in electroomosis of concentrated plugs, the zeta-potential as a function of ionic strength passes through approximately the same maximum at about the same electrolyte concentration. After the correction for the influence of conductance by ions in the diffuse electrical double layer, using O'Briens model, still a slight maximum exists. The results provided an estimate of the Stern layer thickness. An analysis using the hairy layer model, when surface conductance was neglected, provided an estimate of the hairy layer thickness.

Oil‐spill remediation is an international environmental challenge, and superamphiphilic membranes, as a promising solution, have recently drawn lots of attention. However, the robustness of the conventional membrane design is less satisfying under severe conditions during practical applications. Additionally, it is unavoidable for the membranes to face a series of foulants in their practical working environment, for example, algae and sand. These foulants will block the membrane, which leads to a new economic and environmental problem in terms of waste management at the end of their life. To address the aforementioned challenges, a new generation of superamphiphilic vitrimer epoxy resin membranes (SAVER) to separate oil and water efficiently is reported. Similar to classical epoxy resins, SAVER shows strong mechanical robustness and sustains exposure to aqua regia and sodium hydroxide solutions. Furthermore, the blocked membrane can be easily recovered when contaminated with mixed foulants by using dynamic transesterification reactions in the polymer network. The ease with which biobased SAVER can be manufactured, used, recycled, and re‐used without losing value points to new directions in designing a closed‐loop superamphiphilic membrane life cycle.

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