氨基硅烷/马来酸酐接枝聚丙烯界面化学反应的研究

摘要

Through removing polymer physisorbed on the glass fiber surface with solvent extraction to minimize the signal of the polymer in IR and XPS analysis,the interaction was studied by IR and XPS between maleic anhydride grafted polypropylene(MA-g-PP)and an amino silane coupling agent-γ-aminopropyltrimethoxy silane(APS).It is found that the absorption bands of polypropylene still exits in IR spectra of the glass fiber after 72h dimethyl benzene extraction and a new state of N1s at 401.9eV appears in the XPS,which shows that the MA-g-PP and APS have reacted chemically and the reaction product with amido is formed.Although open chain APS and cyclic APS with an internal hydrogen bond coexist on the APS treated glass fiber surface,it is discovered that APS which reacts chemically with MA-g-PP is mainly open chain APS by the quantitative analysis of XPS for N1s in different chemical state.%利用溶剂萃取与红外光谱（IR）、光电子能谱（XPS）技术研究了化学键接在玻璃纤维表面的硅烷偶联剂与接枝聚丙烯间的界面化学反应。结果表明：溶剂萃取可以除去玻璃纤维/树脂界面区物理结合的聚合物基体，减少基体信号的影响，在此基础上，利用IR、XPS可以直接证明氨基硅烷（APS）与马来酸酐接枝聚丙烯（MA-g-PP）间发生了界面化学反应，生成了含酰胺基的反应产物。进一步对不同化学状态的N1s的XPS定量分析发现，尽管APS在玻纤表面以开环直链和以氢键结合的环状两种结构形式存在，但在界面上主要是无环开链结构中的氨基与酸酐发生反应。