Fast Oxygen Scavenging of Macroporous Poly(Norbornadiene) Prepared by Ring‐Opening Metathesis Polymerization

Abstract

Emulsion templated norbornadiene is cured via ring‐opening metathesis polymerization yielding macroporous poly(norbornadiene) foams of 76% porosity exhibiting appealing stiffness combined with considerable ductility. The foams are readily oxidized in the presence of air at room temperature exhibiting an oxygen uptake capacity of more than 300 mg O2 g−1 foam. In closed volumes of air, a final oxygen level of a maximum of 0.0005 vol%, that is, 5 ppm(v) can be achieved after several hours at room temperature. The synergism of the porous morphology and the chemical nature of the polymer allows for the first example of an organic oxygen scavenger material with properties distinctly surpassing the state‐of‐the art in the field.

High-Performance Cathode Materials for Lithium–Sulfur Batteries Based on Sulfurated Poly(norbornadiene) and Sulfurated Poly(dicyclopentadiene)

“…Monolithic cross-linked poly(norbornadiene) (pNBD) was prepared by curing a high internal phase emulsion of norbornadiene in water applying ring-opening metathesis polymerization (Figure 1) using I1 as the initiator. 34 The resulting highly porous monolithic structure was chosen to facilitate infusion with sulfur during the sulfurization step. pNBD possesses two carbon−carbon double bonds and two tertiary allylic carbon atoms per repeat unit.…”

A Natural Rubber Waste Derived Surfactant for High Internal Phase Emulsion Templating of Poly(dicyclopentadiene)

“…[25] Moreover, the high unsaturation of the polymer scaffold allows for a huge variety of chemistries suited for post-polymerization functionalization of pDCPD foams. [21,26,27,28,29,30] The combination of these two features led to the use of emulsion templated pDCPD foams as separators in Li-ion batteries, [31] as templates for making porous oxides, [32,33] for making composite materials [32,33,34,35,36,37] and carbon foams, [38] for stabilization of enzymes [39] or for detoxification of nerve gases. [28] All these HIPE templated pDCPD foams were prepared with the aid of non-ionic surfactants.…”

Organoselenium chemistry-based polymer synthesis

“…In recent years, because of its high efficiency, ring-opening polymerization has become a prominent research area. [65][66][67][68][69][70] In particular, the method is used in the synthesis of polyester materials, including β-butyrolactone, γ-butyrolactone, ε-capro-lactone, etc. 71,72 Accordingly, some selenium-containing polymers were also prepared in this way with Se monomers.…”