摘要
以均苯四甲酸二酐(PMDA)、4,4-二氨基二苯基醚(ODA)为单体原料,制备了聚酰亚胺固相微萃取涂层。用正硅酸乙酯和1,3-双(3-氨基丙基)-1,1,3,3-四甲基二硅氧烷分别对聚酰亚胺涂层改性,制备了正硅酸乙酯改性聚酰亚胺和硅烷偶联剂改性聚酰亚胺固相微萃取涂层。采用红外光谱表征了聚酰亚胺及其改性涂层的结构;通过热重分析测试了涂层的热稳定性;通过X射线光电子能谱(XPS)对涂层的表面元素组成、化学环境进行分析,考察了涂层表面结构对吸附性能的影响,硅烷偶联剂改性PI涂层对苯的吸附量大于正硅酸乙酯改性PI涂层和PI涂层。
PI solid phase microextraction coating was prepared from pyromellitic acid dianhydride and 4,4＇-diamino-diphenylether. PI coating was modified by ethyl silicate and 1,3-bis（ 3-aminopropy） tetramethyldisiloxane. Ethyl silicate modified PI coating and silane coupling agent modified PI coating were synthesized. The structure of the coating was characterized by IR. The thermostability of the coating was examined by thermal analysis. The element composition and chemical environment of the coating surface was analyzed by X-ray photoelectron spectroscopy. The effect of surface structure and adsorption performance of the coating was investigated. The benzene adsorption quantity of the silane coupling agent modified PI coating was greater than the ethyl silicate modified PI coating and PI coating.
出处
《中山大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第6期115-119,共5页
Acta Scientiarum Naturalium Universitatis Sunyatseni
基金
黑龙江省自然科学基金资助项目(B201101)
