Institute for Chemistry and Technology of Materials, Graz University of Technology, Stremayrgasse 9, A 8010, Graz, Austria.
Institute of Analytical Chemistry and Food Chemistry, Graz University of Technology, Stremayrgasse 9, A 8010, Graz, Austria.
Macromol Rapid Commun. 2020 Mar;41(5):e1900581. doi: 10.1002/marc.201900581. Epub 2020 Feb 7.
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 O g foam. In closed volumes of air, a final oxygen level of a maximum of 0.0005 vol%, that is, 5 ppm 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.
乳液模板的降冰片二烯通过开环复分解聚合进行固化，生成具有 76%孔隙率的大孔聚（降冰片二烯）泡沫，具有吸引人的刚度和相当的延展性。这些泡沫在室温下空气中很容易被氧化，表现出超过 300mg O/g 泡沫的氧气吸收能力。在封闭的空气体积中，在室温下几个小时后，最终的氧气水平可以达到最高 0.0005 体积%，即 5ppm。多孔形态和聚合物化学性质的协同作用使得第一个有机氧清除剂材料的实例得以实现，其性能明显超过该领域的现有技术。
