The study of amorphous and crystalline microplastics in the Japanese atmosphere

研究的重点是创造非晶态和晶态塑料，供以后在吸附测试中使用，以及研究这些类型的塑料在环境中的存在程度。对于前者，聚乙烯和聚酯等塑料已被用于使用各种熔融/冷冻循环来创建晶态/非晶态标准。这些塑料的分析方法已经用拉曼光谱和傅里叶变换红外光谱进行了检测。在环境塑料的研究中，观察到了聚乙烯和聚酯等聚合物的变化，长期暴露在户外的紫外线下，塑料的结晶度和表面形成的羰基普遍增加。PET瓶的结晶度并不均匀，瓶子的顶部和底部更无定形。这对预计将发生的环境退化程度有影响。正如预期的那样，聚乙烯相对更耐降解。目前正在进行大气采样，正在测试各种类型的过滤器，以了解哪种过滤器最适合在偏远地区采样。

Research has been centered on the creation of amorphous and crystalline plastics for later use in adsorption tests, as well as studying the extent to which these types of plastics exist in the environment.For the former, plastics such as polyethylene and PET have been used for creating crystalline/amorphous standards using various melt/freeze cycles. Methods for the analyses of these plastics have been examined using both Raman spectroscopy and FTIR.In studies of environmental plastics, the change in polymers such as polyethylene and PET have been observed, with general increases in crystallinity and formation of carbonyl groups on the surface of plastics exposed to uv over long periods outdoors. The crystallinity of PET bottles is not uniform, with the tops and bottoms of bottles being more amorphous. This has implications for the extent of environmental degradation expected to occur. As expected, polyethylene was comparatively more resistant to degradation.Atmospheric sampling is currently ongoing, with various types of filters being tested to understand which is best for sampling in remote locations.