大家使用过的大部分的打印纸是不是都成了一次性用品?这不仅造成纸张和打印耗材的浪费,也会带来污染和森林退化等环境问题。美国化学家最近制造出了一种可以重复使用20余次的新型纸张。他们利用氧化还原染料的颜色转换特性,用紫外线打印文字。如果需要再次利用,只需将该纸加热至115℃,原本的字迹便会消失。打印 Do most paper used by us become one-off items? This not only causes waste of paper and printing supplies, but also environmental problems such as pollution and forest degradation. American chemists recently created a new type of paper that can be reused more than 20 times. They make use of the color conversion properties of redox dyes to print text in UV light. If you need to re-use, simply heat the paper to 115 ℃, the original writing will disappear. print