廉价新型塑料的偶然发现

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根据本周在圣地亚哥举行的美国化学学会会议上报告的研究结果,科学家们已经生产出一种新型橡胶塑料,类似于粘合剂和鞋底中使用的橡胶。 这种新型材料由两种常见的石油产品制成,其生产成本有望大大低于同类聚合物。

康奈尔大学的杰弗里·科茨和他的同事们完全是偶然地做出了这一发现,他们偶然发现了一种催化剂,这种催化剂能够利用廉价的石油产品乙烯和聚乙烯形成聚合物。 类似的聚合物是由相对昂贵的化学品苯乙烯和丁二烯通过所谓的“活性聚合过程”制成的,在该过程中,硬单体嵌段和软单体嵌段串在一起以产生弹性材料。 研究人员长期以来一直认为,对于这些更便宜的石油产品来说,这样的聚合过程应该是可能的,但合适的催化剂一直未能找到。 科茨团队鉴定出这种新型的钛基催化剂,现在为这一 खोज画上了句号。

至于为什么科学家没有更早地发现这一点,科茨评论说:“没有办法理性地预测化合物的作用。 我们只是偶然发现了它,幸运的是我们睁大了眼睛。”

Kate Wong is an award-winning science writer and senior editor at 大众科学 focused on evolution, ecology, anthropology, archaeology, paleontology and animal behavior. She is fascinated by human origins, which she has covered for more than 25 years. Recently she has become obsessed with birds. Her reporting has taken her to caves in France and Croatia that Neandertals once called home, to the shores of Kenya's Lake Turkana in search of the oldest stone tools in the world, to Madagascar on an expedition to unearth ancient mammals and dinosaurs, to the icy waters of Antarctica, where humpback whales feast on krill, and on a "Big Day" race around the state of Connecticut to find as many bird species as possible in 24 hours. Kate is co-author, with Donald Johanson, of Lucy's Legacy: The Quest for Human Origins. She holds a bachelor of science degree in biological anthropology and zoology from the University of Michigan. Follow Wong on X (formerly Twitter) @katewong

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