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聚醚砜酮薄膜在炭化过程中化学结构的变化 被引量:3

A study of the change of the chemical structure of a polyethersulfoneketone film during pyrolysis
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摘要  用傅里叶变换红外光谱法研究了聚醚砜酮薄膜试样在氩气氛中,室温至950℃热解过程中固体残留物的内部结构的转变。根据谱带的变化规律,提出了试样在热解炭化时会沿着二氮杂萘环的N N键断裂,形成共轭腈基及异氰基的苯环化合物。异氰基化合物进一步二聚成二苯基碳化二亚胺,后者又聚合生成含氮杂环的多环芳烃。继续热解炭化会导致芳杂环的合并和脱除HCN等气态小分子,生成连续巨大的含氮杂芳环多环化合物。再经稠环芳构化最终得到具有芳环层面结构的大分子固态残留物。 Internal structure changes of Polyethersulfoneketone film during pyrolysis in argon from room temperature to 950 degreesC were studied by Fourier transform infrared spectroscopy (FTIR). From the variations of the spectral bands, it is suggested that the scission of the phthalazine ring along N-N bond occurs during pyrolysis, leading to the formation of compounds of phenyl with the conjugated nitrile group and the isocyan group. As the isocyan group is polymerized further, diphenyl carbondiimine may be formed, further polymerization of which forms a nitrogen-containing polycyclic aromatic compound. Further continuous carbonization should lead not only to a combining of the heteroaromatic ring, but also to the evolution of small gaseous molecules like hydrogen cyanide and the fort-nation of a giant nitrogen-containing polycyclic compound, which can be further polycondensed to form a solid product with a giant polyaromatic planar ring.
出处 《新型炭材料》 SCIE EI CAS CSCD 2004年第1期49-52,共4页 New Carbon Materials
基金 国家自然科学基金(20276008) ~~
关键词 聚醚砜酮薄膜 炭化过程 化学结构 傅里叶变换红外光谱 热解过程 固体残留物 N-N键 膜材料 polyethersultoneketone film carbonization chemical constitution FTIR
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参考文献3

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同被引文献39

  • 1张小勇,王新伟,刘锐,郑明东.煤基炭膜在处理高浓度焦化废水中的应用[J].化工进展,2009,28(S2):95-97. 被引量:3
  • 2刘诗丽,王同华,张兵.聚醚砜酮薄膜热稳定性及热解动力学规律的研究[J].新型炭材料,2004,19(3):224-228. 被引量:5
  • 3赵根祥,钱树安.聚酰亚胺薄膜在热解过程中化学结构的变化[J].光谱学与光谱分析,1996,16(6):26-30. 被引量:14
  • 4张连来.聚芳醚腈砜(PENS)的热分解动力学[J].高分子材料科学与工程,1997,13(1):98-102. 被引量:8
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  • 10Liu S L, Wang T H, Liu Q L, et al. Gas permeation properties of carbon molecular sieve membranes derived from novel poly (phthalazinone ether sulfone ketone). Industrial & Engineering Chemistry Research, 2008, 47(3): 876-880.

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