…Polyvinyl chloride decomposes when exposed to light or heat, generating hydrogen chloride, and epoxy compounds are used as plasticizers that capture this hydrogen chloride. Epoxidized soybean oil is used in particular for food and medical materials. Thus, the performance of a plasticizer requires that it (1) mixes well with the polymer (compatibility), (2) is not toxic to living organisms (safety), (3) does not evaporate (heat resistance), (4) does not lose its properties as a plasticizer even at low temperatures (cold resistance), and (5) does not escape from the polymer (non-migration, non-bleed-out). … *Some of the terminology that mentions "epoxidized soybean oil" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…ポリ塩化ビニルは光や熱によって分解し,塩化水素を発生するが,この塩化水素をとらえる働きをもつ可塑剤として,エポキシ化合物も用いられる。とくに食品用,医療材料用には,エポキシ化ダイズ油などが使用される。 このように,可塑剤の性能としては,(1)高分子とよくまじること(相溶性),(2)生体に対し毒性のないこと(安全性),(3)揮発してなくならないこと(耐熱性),(4)低温でも可塑剤としての性質を失わないこと(耐寒性),(5)高分子から抜け出ないこと(非移行性,非ブリードアウト性),などが要求される。… ※「エポキシ化ダイズ油」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
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