专业英语作文 化学

Degradable Plastic Bags

The plastic material, is a high molecular weight organic matter as main component. Over the past few years plastics inspire countless innovations that help make life better, healthier and safer every day. For example, plastic bags help keep the foods we eat and serve our families safer and fresher than ever before. But it cause the white pollution. So June 1, 2008 started the implementation of the "plastic limit order" .To protect our environment, we should use more environmental plastic bags. The production of plastic bags added in the process of degradation masterbatch plastic bags that degradable plastic bags, degradable plastic bags for 90 days can automatically decompose in accord with certain conditions. To the plastic film bag as raw material for the production of plastic bags, we used plastic bags: the bag bag, shopping bags, handbags, handbags, bags, vest belt and industrial.

Some domestic "manufacturers of degradable plastic" method is mainly used in PVC, by adding a certain proportion of starch biodegradable agents, thus changing the hydrocarbon structure of PVC, by microorganisms and decomposition. Another approach is the incorporation of photosensitizer, in plastics, in the sunshine

under the plastic gradually decomposition. Or the "light" and "biological" combined with characteristics of degradation, photodegradation and biodegradation plastic. But the essence of the two methods is changed the structure of PVC molecular chain, simply, is through the biological degradation agent or photosensitizer, the molecular links between interrupted, not easy to larger molecules into small molecules is relatively easy decomposition, but the essence of PVC has not degradation did not change.

Our members are proud to manufacture materials that can help us to do more with less and contribute to a more efficient use of resources. These are just some of the ways plastics are helping to create a better planet and a safer world.That is to say chemistry affect daily of our society. Chemistry drives the development of science and technology,and mankind benefit from it.