Nanoporous Poly(Melamine Formaldehyde) Networks by Aqueous Dispersion Polycondensation—Synthesis and Adsorption Properties
Nanoporous Poly(Melamine Formaldehyde) Networks by Aqueous Dispersion Polycondensation—Synthesis and Adsorption Properties
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DOI：
10.1002/mame.201400330
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发表时间：
2015-05
影响因子：
3.9
通讯作者：
Dana Schwarz;J. Weber
中科院分区：
文献类型：
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作者：
Dana Schwarz;J. Weber
采用草酸催化水分散缩聚法制备了纳米孔三聚氰胺甲醛树脂。多峰孔隙率，包括微孔，介孔和大孔，是通过12 nm大小的二氧化硅纳米粒子和相分离过程的硬模板的相互作用来实现的，从而产生具有高吸附应用潜力的材料，如CO2吸附性能的研究所示。这些材料的特征在于一组方法，包括电子显微镜，气体吸附和小角度X射线散射。讨论了合成条件（如搅拌速度）对产物性能的影响，并对材料的形成机理提出了建议。最后，性能进行了比较，通过本体缩聚得到的材料。
The preparation of nanoporous melamine-formaldehyde resins by aqueous dispersion polycondensation under oxalic acid catalysis is presented. Multimodal porosity, including micro-, meso-, and macropores, is achieved by an interplay of hard-templating of 12 nm sized silica nanoparticles and phase separation processes, resulting in materials with high potential for adsorption applications, as exemplified by investigation of the CO2 adsorption properties. The materials are characterized by a set of methods, including electron microscopy, gas adsorption, and small-angle X-ray scattering. The influence of the synthesis conditions (e.g. stirring speed) on the properties of the obtained products is also discussed and a suggestion is made for the formation mechanism of the materials. Finally, the properties are compared to materials obtained by bulk polycondensation.