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首页> 外文期刊>ACS Omega >Identification of Additives in Polypropylene and Their Degradation under Solar Exposure Studied by Gas Chromatography–Mass Spectrometry
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Identification of Additives in Polypropylene and Their Degradation under Solar Exposure Studied by Gas Chromatography–Mass Spectrometry

机译：通过气相色谱 - 质谱 - 质谱法研究聚丙烯添加剂及其降解的降解

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摘要

Additives are absolutely essential in the development of commercial polymeric materials. Accordingly, an exhaustive control of composition and evolution in these additives over time is necessary to validate their performance and safety during their shelf life and, consequently, their ultimate applications. Gas chromatography coupled with mass spectrometry, GC–MS, is described in the present work to identify and analyze the content of a wide variety of additives, commonly used in industrial polymeric materials. First, the identification under the present experimental protocol of additives with a relatively high molecular weight (Irganox 1330 and Irganox 1010) has been successfully attained. Second, the evolution under solar exposure over time has been analyzed by GC–MS for 11 additives and derived substances, which have been identified in a commercial polypropylene sample, estimating the corresponding depletion times. In addition, the resultant increase of carbonyl groups in the polymeric macrochains along the photo-oxidation has been also determined by infrared spectroscopy. Therefore, GC–MS is found to be a reliable tool for the analysis of the evolution of commonly used polymer additives under specific degradation conditions, which can be very useful in the formulation of improved future additivations.
机译：添加剂在商业聚合物材料的开发方面是绝对必需的。因此，需要随着时间的推移对这些添加剂中的组成和演化进行详尽的控制，以验证其在保质期内的性能和安全性，并且因此，它们的最终应用程序。在本作工作中描述了与质谱，GC-MS的气相色谱，GC-MS鉴定和分析了各种添加剂的含量，通常用于工业聚合物材料。首先，已经成功地获得了具有相对高分子量（Irganox 1330和Irganox 1010）的添加剂的本实验方案下的鉴定。其次，通过GC-MS对11种添加剂和衍生物质进行分析的日光暴露下的演变，并在商业聚丙烯样品中鉴定，估计相应的耗尽时间。另外，通过红外光谱法也确定了沿着光氧化的聚合物染色中的所得碳基的增加。因此，发现GC-MS是分析常用聚合物添加剂在特定降解条件下的常用常用聚合物添加剂的进化的可靠工具，这对于改进的未来添加剂的配方非常有用。

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