摘要
采用溶胶凝胶法，以二甲基二乙氧基硅烷／正硅酸乙酯的复合醇盐为前驱体，制备了一种厚度达到３０μｍ～５００μｍ的大尺寸无载体膜，膜体显示了良好的的可弯曲性和成膜性能，原子力显微镜表征得到的表面平均粗糙度为０．３ｎｍ，色质连用谱的分析表明在醇盐水解聚合过程中形成了大量［（ＣＨ３）２Ｓｉ－Ｏ］ｎ环状分子，填充凝胶孔隙，降低毛细管应力。
A large size
self sustained film with considerable thickness ranging from 30 μm to 500 μm was prepared
through sol gel method by adopting dimethyldiethoxysilane/tetraethoxysilane composite
material as precursors. The film exhibits satisfactory plasticity and film forming capability as
well. AFM (Atomic Force Microscope) investigation of the film surface showes a mean
roughness of 0.3 nm. Gas chromatogram/mass spectrum analysis indicates that a large amount
of [( CH 3) 2Si O ] n molecules were formed during the hydrolysis and condensation
processes. These molecules act as space filler within the gel network. Such filler not only leads
to the structural flexibility and plasticity of the film, but also inducess the substantial decrease
of the capillary forces and shrinkage in the film.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第4期574-576,共3页
Acta Optica Sinica
关键词
溶胶凝胶法
无支撑膜
有机改性
二氧化硅
薄膜
sol gel, self sustained film,
organic inorganic composite, dimethyldiethoxysilane/tetraethoxysilane (DDS/TEOS).
