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The uniformity of aminosilane layers typically used for the modification of hydroxyl bearing surfaces such as silicon dioxide is critical for a wide variety of applications, including biosensors. However, in spite of many studies that have been undertaken on surface silanization, there remains a paucity of easy-to-implement deposition methods reproducibly yielding smooth aminosilane monolayer.

Keywords: Silicon dioxide functionalization, Aminosilane and Monolayer.  In this study, solution- and vapor-phase deposition methods for three aminoalkoxysilanes differing in the number of reactive groups (3-aminopropyl triethoxysilane (APTES), 3-aminopropyl methyl diethoxysilane (APMDES) and 3-aminopropyl dimethyl ethoxysilane (APDMES)) were assessed with the aim of identifying methods that yield highly uniform and reproducible silane layers that are resistant to minor procedural variations. Silane film quality was characterized based on measured thickness, hydrophilicity and surface roughness. 

Here we began to analysis the Silicon Dioxide/wood composite material. The generating silicon dioxide has a positively correlated with weight gain, when under the fiber saturation point, the silica present in the cell walls. XRD diffraction peak position has not changed, the rate of weight gain increases, the peak intensity decreases, the degree of crystallinity decreases.  Stress relaxation becomes smaller, the binding force in the material enhanced, intermolecular began to produce crosslinking binding. 



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