摘要
采用氨基-过硫酸盐氧化-还原引发体系将单体甲基丙烯酸(MAA)接枝聚合在三聚氰胺-尿素-甲醛(MUF)树脂表面,制备接枝材料MUF-g-PMAA,将其低温炭化得到性能稳定的炭化材料,研究了其对Cu2+的吸附性能,考察了温度、p H值的影响.结果表明,在p H=5.0、温度30℃条件下,PMAA-g-MUF对Cu2+的吸附容量达36.1 mg/g;吸附容量随p H值增大而增加,随温度升高呈先增加后减小的趋势,吸附符合Langmuir模型和准二级动力学方程.
The monomer of methacrylic acid（MAA） was grafted on the surface of melamine-urea-formaldehyde（MUF） resin by using the redox initiating system formed by amino and persulfate, the grafted material MUF-g-PMAA was achieved. After carbonization at low-temperature, the carbonized material with more stable properties was obtained. The effects of temperature and p H value on the adsorption property of carbonized MUF-g-PMAA to Cu2＋ were examined. The results indicated that the adsorption capacity of carbonized MUF-g-PMAA to Cu2＋ reached up to 36.1 mg/g at p H=5.0 and 30 ℃. The adsorption capacity increased firstly and then decreased with temperature, and increased with p H value. Besides, the adsorption process conformed to the Langmuir adsorption isotherm model and pseudo-second kinetic equation.
出处
《过程工程学报》
CAS
CSCD
北大核心
2015年第5期854-859,共6页
The Chinese Journal of Process Engineering
基金
国家国际科技合作专项基金资助项目(编号:2011DFA51980)
山西省科技合作专项基金资助项目(编号:2015081043)
山西省攻关基金资助项目(编号:20140313002-4)
关键词
甲基丙烯酸
接枝聚合
炭化
吸附
树脂
铜离子
methacrylic acid
grafting polymerization
carbonization
adsorption
resin
copper ion
