【摘 要】
：
A novel hydrophilic composite hydrogels (PEI/PDMAEMA) were prepared by the one-pot approach via the free radical polymerization on the amine nitrogens of Poly(ethylene imine) (PEI) and poly[2-(N,N-dim
【机 构】
：
Department of Pharmaceutical and Biological Engineering,School of Chemical Engineering,Sichuan Unive
【出 处】
：
第七届国际分离科学与技术会议(Proceedings of the 7th International Conferen
论文部分内容阅读
A novel hydrophilic composite hydrogels (PEI/PDMAEMA) were prepared by the one-pot approach via the free radical polymerization on the amine nitrogens of Poly(ethylene imine) (PEI) and poly[2-(N,N-dimethylamino)ethyl methacrylate](PDMAEMA)[1].In this study,the impacts of different concentration of PEI (0%,3%,5%,8%) on the hydrophilicity and adsorption abilities of composite materials and conditions of the reaction (temperature,time) were investigated.FT-IR and elemental analyses were employed to characterize the composition of the materials and Cr(Ⅵ) ions were chosen to estimate the adsorption ability of the copolymer.The results showed that the introduction of PEI could effectively improve the hydrophilicity of PDMAEMA,and then adjust the adsorption rate.At the same time,comparing with the PDMAEMA,the Cr(Ⅵ) adsorption amounts of PEI/PDMAEMA nearly tripled.So this intelligent hydrophilic composite materials are expected to be used for the adsorption of metal ions in the wastewater,such as Cr(Ⅵ),Cu(Ⅱ) or Fe(Ⅲ).
其他文献
Melt crystallization has been reported as an effective technology for hyperpure chemical production.The dynamic mode of melt crystallization is attractive as a continuous process.The kinetic study on
Natural gas consists of not only methane which is the main component of liquefied natural gas,but also heavy gas which are used as a raw material of chemicals,such as ethane and propane.As the practic
Ginseng seed oil is known to have ideal oxidative stability and can be developed as new healthy edible oil [1].Ginseng berry consists of a seed and flesh surrounding the seed.As most of oils are rich
Au nanoparticles with anisotropic shape have drawn tremendous attention in the past two decades due to the unique physic-chemical properties originated from shape [1].Thereby,several methods controlli
Sensitivity of a high explosive like RDX (cyclotrimethylenetrinitramine) depends largely on its particulate properties such as the particle sizes,size distributions,morphologies,solvent inclusions,and
In the case of explosives,product quality,including properties such as performance and insensitivity,can be significantly influenced by particle morphology and particle size [1].Attempts have been mad
Manganese is an important industrial raw material,as well as a strategic element of smelting steel.Manganese oxide ores are stable in acid or alkaline conditions,so the extraction of manganese must be
The manufacture of fine phosphates such as sodium dihydrogen phosphate (NaH2PO4) from wet-process phosphoric acid (WPA) is gradually paid attention to in recent years.However,there are some undesirabl
The application of a stochastic simulated annealing based methodology for the synthesis of distillation configurations using (N-1) columns to separate any zeotropic N-component feed into N product str
In recent decades to design and synthesis some stilbene derivatives as efficient two-photo absorption triplet photosensitizes has attracted a considerable amount of attention especially to obtain it’s