Synthesis of mesoporous poly(melamine-formaldehyde) particles by inverse emulsion polymerization.
Synthesis of mesoporous poly(melamine-formaldehyde) particles by inverse emulsion polymerization.
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DOI：
10.1016/j.jcis.2017.03.064
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发表时间：
2017-07
影响因子：
9.9
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
使用十二烷和 Span80® 作为连续相，通过反相乳液聚合合成了表面积高达 200 m2g−1 的介孔聚（三聚氰胺-甲醛）（MF）颗粒。讨论了形状控制（使用乳液技术）和孔隙率控制（使用二氧化硅纳米颗粒作为硬模板）的更精细细节。通过气体吸附方法和电子显微镜分析了相分离过程对 20-200 µm 尺寸球形颗粒的可观察孔隙率的影响。多孔 MF 颗粒中的高密度胺和三嗪官能团使该材料成为重金属离子和亚甲基蓝的有前途的吸附剂。在初步的柱实验中，合成材料对亚甲基蓝的吸附总容量为 2.54 mmol/g (≙ 812.4 mg/g)。
Mesoporous poly(melamine-formaldehyde) (MF) particles with surface areas of up to 200 m2g−1were synthesized by an inverse emulsion polymerization using dodecane and Span80® as continuous phase. The finer details of the shape control (using emulsion techniques) and the porosity control (using silica nanoparticles as hard-template) are discussed. The impact of phase-separation processes on the observable porosity of the 20–200 µm sized spherical particles is analysed by gas sorption methods and electron microscopy. The high density of amine and triazine functional groups in the porous MF particles make the material a promising adsorber for heavy metal ions and methylene blue. In a preliminary column experiment, the synthesized material exhibited a total capacity of 2.54 mmol/g (≙ 812.4 mg/g) for the adsorption of methylene blue.