A green method of preparation of porous melamine formaldehyde resin without template in aqueous solution

IF 2.2 4区化学 Q3 CHEMISTRY, PHYSICAL Colloid and Polymer Science Pub Date : 2024-10-19 DOI:10.1007/s00396-024-05334-y

Huapeng Cui, Shengnan Li

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Abstract

Porous melamine formaldehyde resin (PMF) was synthesized without using template in aqueous solution with a green preparation method. Conditions such as formaldehyde/melamine, concentration, curing temperature, and time on pore parameters of synthesized porous melamine formaldehyde resin were investigated. The chemical property and pore structure of porous melamine formaldehyde resin were characterized by infrared spectroscopy, SEM, and BET. The results showed that the samples synthesized in solvent water had a surface higher than 490 m²/g, pore diameter of about 12.0 nm, and pore volume of about 1.2 cm³/g. The surface area and pore structure of porous melamine formaldehyde resin could be adjusted by changing the prepolymer concentration. Due to the large pore diameter and volume, it also adsorbed a great amount of Congo Red (CR), indicating an excellent adsorbent for large molecules. This investigation reveals that the -NH₂ and pore structure have great effects on the adsorption capacity of Congo Red dye of the as-synthesized melamine formaldehyde resin samples.

Graphical Abstract

The porous melamine formaldehyde resin without using template was synthesized by a green preparation method. The pore structure of the melamine formaldehyde resin was formed by nanoparticles accumulation. The surface area and pore structure of porous melamine formaldehyde resin could be adjusted by changing the prepolymer concentration. The adsorption capability of the porous melamine formaldehyde resin for Congo Red was up 720 mg/g.

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一种在水溶液中制备无模板多孔三聚氰胺甲醛树脂的绿色方法

采用绿色制备法在水溶液中无模板合成多孔三聚氰胺甲醛树脂（PMF）。考察了甲醛/三聚氰胺、浓度、固化温度、固化时间等条件对合成多孔三聚氰胺甲醛树脂孔隙参数的影响。采用红外光谱、扫描电镜和BET对多孔三聚氰胺甲醛树脂的化学性质和孔隙结构进行了表征。结果表明，在溶剂水中合成的样品表面大于490 m2/g，孔径约为12.0 nm，孔体积约为1.2 cm3/g。通过改变预聚物的浓度，可以调节多孔三聚氰胺甲醛树脂的比表面积和孔结构。由于其孔径大、体积大，吸附了大量刚果红（CR），是一种优良的大分子吸附剂。研究表明，-NH2和孔结构对合成的三聚氰胺甲醛树脂样品对刚果红染料的吸附能力有很大影响。摘要采用绿色制备法合成了不使用模板的多孔三聚氰胺甲醛树脂。三聚氰胺甲醛树脂的孔隙结构是由纳米颗粒堆积形成的。通过改变预聚物的浓度，可以调节多孔三聚氰胺甲醛树脂的比表面积和孔结构。多孔三聚氰胺甲醛树脂对刚果红的吸附能力提高了720 mg/g。

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来源期刊

Colloid and Polymer Science 化学-高分子科学

CiteScore

4.60

自引率

4.20%

发文量

111

审稿时长

2.2 months

期刊介绍： Colloid and Polymer Science - a leading international journal of longstanding tradition - is devoted to colloid and polymer science and its interdisciplinary interactions. As such, it responds to a demand which has lost none of its actuality as revealed in the trends of contemporary materials science.