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Volume 61 Supplement >

Plastic problem in Africa

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タイトル: Plastic problem in Africa
著者: Bashir, Nabil H H 著作を一覧する
発行日: 2013年 2月
出版者: Graduate School of Veterinary Medicine, Hokkaido University
誌名: Japanese Journal of Veterinary Research
巻: 61
号: Supplement
開始ページ: S1
終了ページ: S11
抄録: Plastics are a subspecies of a class of materials known as polymers. These are composed of large molecules, formed by joining many, often thousands, of smaller molecules (monomers) together. Plastics are made from low-molecular-weight monomer precursors, organic materials, which are mostly derived from petroleum, that are joined together by a process called “polymerization.” Plastics owe their name to their most important property, the ability to be shaped to almost any form to produce articles of practical value. Plastics can be stiff and hard or flexible and soft. Because of their light weight, low cost, and desirable properties, their use has rapidly increased and they have replaced other materials, e.g. metals and glass. Plastics are used in millions of items, including cars, bulletproof vests, toys, hospital equipment, and food containers. More than a 40 billion kg of plastic were produced in 2000. Their increased use has resulted in concern with (1) the consumption of natural resources such as oil, (2) the toxicity associated with their manufacture and use, and (3) the environmental impact arising from discarded plastics.
資料タイプ: bulletin (article)
出現コレクション:Volume 61 Supplement

提供者: 獣医学部図書室


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