Make environmental protection plastic with milk pr

Casein is the major mammalian species including cows, sheep and human milk proteins in the. In 1889, the French chemist John Hyatt found, if the use of formaldehyde treatment of casein, you can get a new substance. This kind of material hard light, characteristics and ivory and tortoise shell is similar, it is the plastic. With the development of production of petroleum chemical material for twentieth Century plastic, and obtain the rule all the land status, casein plastics eventually discontinued in 70's of last century based on.

At the beginning, plastic for its stability and durability and is regarded as a miracle substance, loved by the people. But a lot of plastic was used for disposable goods and packaging are discarded, so its performance is not persistent people need. The petroleum chemical plastic gradually pose a threat to the human race, a hated.

Facing the reality of plastic is everywhere, scientists have been trying, trying to find a biodegradable plastic substitute. The history of David Sinadi and his colleagues the United States Ohio Western Reserve University research and development produced by plastic, found a possible alternatives, namely the original invention of plastic raw material milk casein plastic.

Casein plastic is good, because it can be a big advantage of biological decomposition, because the main ingredient is protein casein plastics. But in order to restart production of casein plastics based on fragile characteristics become possible, researchers must first solve the casein plastics. David Sinadi studied solution is to use a name of "sodium montmorillonite" silicate making skeleton, then the casein plastics attached to the skeleton. "Sodium montmorillonite" after freeze drying, aerogel material similar to become spongy. Aerogel hollow structure is very fragile, as long as the filled plastic in its porosity, gas will become solid gel.

It is particularly worth mentioning is, silicate framework can prevent the plastic cracking. Researchers concluded that, casein, silicate and glyceraldehyde are combined, can obtain casein plastics such useful material. David Sinadi and colleagues report points out, whether it is rigid or strength, plasticity, casein plastics and polystyrene can match. With polystyrene is not the same, the new material will soon be broken down in the discarded. Preliminary test results of exciting, in similar landfill environment, after casein plastic placed 18 days, has been decomposed material reached 20%.