Nafion is a sulfonated tetrafluoroethylene based fluoropolymer-copolymer discovered in the late 1960s by Walther Grot of DuPont. It is the first of a class of synthetic polymers with ionic properties which are called ionomers.his form of Nafion, referred to as the neutral or salt form, is finally converted to the acid form containing the sulfonic acid (-SO 3 H) groups. Nafion can be cast into thin films by heating in aqueous alcohol at 250 Â°C in an autoclave.
Some scientists have estimated that the krill in the ocean around Antarctica weigh more than the entire worldâs human population. The krill, rich in protein and fat, are food for large numbers of animals at the top of the food chain, including penguins, seals, and whales. Scientists studying the Antarctic marine ecosystem now know that its high productivity is confined to the edge of the sea ice and a few other areas, rather than everywhere in the Southern Ocean.
Much less extensive than Arctic tundra, Antarctic tundra is found on the Antarctic Peninsula and several Antarctic and subantarctic islands. These areas have rocky soil that supports minimal plant life: two flowering plant species, mosses, algae, and lichens.ife in any biome includes producers (plants and other photosynthetic organisms) and consumers (organisms that obtain their energy from producers). These consumers may be further classified as herbivores (plant eaters), carnivores (meat eaters), or omnivores (feed on a combination of animals and plants).