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采用Ziegler-Natta催化剂所生产的聚丙烯,均含有数量不等的HCl,我们先前工作已表明:微量的HCl会促进聚丙烯的热氧化,最近,我们用红外光谱法研究表明,HCl还存在着催化——抑止聚丙烯热氧化的反常行为。虽然,人们早已注意到HBr存在着催化——抑止聚乙烯等有机物热氧化的现象,然而,对HCl也存在着催化——抑止聚丙烯的热氧化的反常行为,却至今还未见有报道。
Polypropylenes produced using Ziegler-Natta catalysts contain varying amounts of HCl. Our previous work has shown that trace amounts of HCl promote the thermal oxidation of polypropylene. Recently, we have observed by infrared spectroscopy that HCl still exists Catalytic - Inhibits the anomalous behavior of polypropylene in thermal oxidation. Although it has long been noticed that HBr has the potential of catalysing and inhibiting the thermal oxidation of organics such as polyethylene, there has been no report on the abnormal behavior of hydrogen chloride catalyzing and inhibiting the thermal oxidation of polypropylene.