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通过石英晶体微天平(QCM)研究不同最外层对单体、交联剂、引发剂扩散入多层膜的结果显示,聚乙烯亚胺(PEI)为最外层的多层膜更有利于负电荷分子扩散.将(聚乙烯亚胺/聚丙烯酸)12-聚乙烯亚胺[(PEI/PAA)12-PEI]多层膜浸入带有单体、引发剂、交联剂的溶液后,经过光聚合交联与热交联后可形成自支撑膜.XPS数据显示多层膜的上下表面组分一致,证明双网络多层膜的形成,而不是只在多层膜表面形成一层水凝胶涂层.并且自支撑膜的杨氏模量为0.04 MPa,最大应变为2.7%.这种方法在不改变多层膜厚度的情况下,提高了多层膜的韧性,制得了自支撑膜.
Diffusion of monomers, cross-linkers and initiators into multilayer films at different outermost layers by quartz crystal microbalance (QCM) showed that polyethyleneimine (PEI) as the outermost multilayer film was more favorable (PEI / PAA) 12-PEI] multilayer film was immersed in a solution containing monomer, initiator and cross-linking agent, After photopolymerization crosslinking and thermal crosslinking can form a self-supporting film.XPS data show the composition of the upper and lower surface of the multilayer film to prove the formation of dual network multilayer film, rather than only a layer of water on the surface of the multilayer film of water Gel coating, and the Young’s modulus of the self-supporting film is 0.04 MPa and the maximum strain is 2.7% .This method improves the toughness of the multi-layer film without changing the thickness of the multi-layer film, membrane.