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将分析有机物中2,4-二硝基苯脘的紫外光谱法(简称DNPH-UV法)用于固体高分子材料的羰基检测,在70年代才有报道.Kato利用DNPH-UV法和红外光谱法(IR法)跟踪聚乙烯薄膜在光氧化中羰基的生成数据,两者的检测灵敏度几乎相同,而Johnson等用前一方法曾检出聚乙烯薄膜中有极少量羰基存在,但缺少相应的IR数据,其灵敏度难以判断.此外,在应用DNPH-UV法时,所规定的反应条件也不同,对影响反应的各种因素,特别是对检测灵敏度的影响,仍缺乏资料.因此本文以聚乙烯薄膜为对象,对样品的氧化程度、厚度及其反应条件和反应液的组分等进行了研究.
DNPH-UV method was applied to the carbonyl detection of solid polymer materials in the analysis of carbonyl compounds of 2,4-dinitrobenzene in organic matter, which was reported only in the 1970s.Kato used DNPH-UV method and infrared spectroscopy Law (IR method) to follow the polyethylene oxide film in the carbonyl oxidation of the formation of data, the detection sensitivity of the two is almost the same, Johnson and other methods using a polyethylene film has been detected in a very small amount of carbonyl exists, but the lack of corresponding IR data, its sensitivity is difficult to judge.In addition, the application of DNPH-UV method, the reaction conditions specified are different, the impact of various factors that affect the reaction, especially the sensitivity of the detection effect, there is still a lack of information.Therefore, Ethylene film as the object, the degree of oxidation of the sample, the thickness and reaction conditions and the reaction liquid components were studied.