【作者】 王寅之；

【导师】 赵邦蓉；

【作者基本信息】 北京化工大学 ， 分析化学， 2002， 硕士

【摘要】 本文作者在有关高分子化合物热裂解／色谱质谱(PY-GC／MS)方面进行了如下四个课题的研究： 1．对聚丙烯腈(PAN)及丙烯腈共聚物：丙烯腈-苯乙烯共聚物(AS)；内烯腈-丁二烯共聚物(NBR)；丙烯腈-丁二烯-苯乙烯三元共聚物(ABS)的热裂解GC／MS的研究，获得了组成这些高聚物的单体和特征化合物，为未知物的鉴定打下了基础。 2．对核壳结构ACR的PY-GC／MS的分析，获得了ACR树脂的组成。核部分为部分交联的丙烯酸丁酯；壳部分为聚甲基丙烯酸甲酯，核与壳之间以接枝形式存在。 3．对玉米淀粉及其衍生物氧化淀粉、两性淀粉、阳离子淀粉，马铃薯淀粉及其衍生物丙烯酰胺接枝马铃薯淀粉的PY-GC／MS研究，获得了玉米淀粉热裂解的特征化合物以及改性淀粉之间热裂解的差异。 4．最后本文对本文研究过的高聚物和部分文献中高聚物PY-GC／MS研究的数据进行了归纳总结，将其输入到数据库中，并用网络应用程序ASP设计了对数据库进行操作的界面，实现了对PY-GC／MS数据的检索、维护和更新。从而大大节省了读者的时间。 总之，通过本论文的实验证明：PY-GC／MS是分析这几种高聚物的有效工具。其分析所用样品量非常少，样品不用事先进行分离和处 北京化卜大学硕卜学位沦文理，井目可以适用于固体聚合物，这是普通气相色潜/质谱联用所不能达到的。从裂解产物不但可以得到聚合物的组成，还可以得到很多结构方面的信息。更多还原

【Abstract】 In this paper, four tasks of polymers’ pyrolysis-Gas Chromatography /Mass spectrometry(PY-GC/MS) were researched:1. Polyacrylonitrile and several copolymers of acrylonitrile: acrylonitrile-styrene copolymer(AS), acrylonitrile butadiene rubber(NBR), acrylonitrile butadiene-styrene(ABS) were researched by PY-GC/MS. These polymers’ monomers and characteristic pyrolytic products were obtained. It grounds unknown polymers’ identification.2. hi the analysis of core-shell polyacrylic resin(ACR)’s PY-GC/MS, ACR’s composition was obtained. Its core is cross-linking butyl acrylate; Its shell is polymethyl methacrylate. Core and shell are grafted.3. In the PY-GC/MS analysis of cornstarch, oxidized cornstarch, positive ion cornstarch, potato starch and graft polymerization of potato starch and acrylamide, cornstarch’s pyrolytic characteristic products and pyrolytic difference of those modified starch were obtained.4. At last, the PY-GC/MS data of polymers researched in this paperand appeared in part of literature was summed up. Then the data was inputted into database. At the same time, the interface operating database was designed in Active Server Page(ASP), PY-GC/MS database’s search, maintenance and update were realized. As a result, readers’ time will be saved by a long way.In a word, PY-GC/MS is proved to be an efficiency tool to analyze these polymers by the article’s experiment. It need only a little sample and its separate is unnecessary before the sample’s analysis. In addition, PY-GC/MS can analyze solid polymer and ordinary GC/MS can’t do that. Not only the compounds of polymers but also many information of polymers’ structures can be obtained by PY-GC/MS.更多还原