利用聚乙烯醇(PVA)表面含有较多含氧官能团的特点,通过一系列化学修饰手段在其表面连接上聚乙烯亚胺(PEI)大分子,得到PEI-PVA纳米微球。通过扫描电子显微镜和傅里叶变换红外光谱等多种表征方法,完整揭示了其形貌和化学组分。对阴离子表面活性剂污水的处理实验显示,PEI-PVA纳米微球在酸碱性条件下都具有较好的吸附效果,且随吸附时间的延长吸附量不断增大,24h后趋于稳定。以其为原料制得的PEI-PVA高分子薄膜具有较好的吸附处理效果和较强的重复利用性,具有广阔的应用前景。
Taking advantage of the large number of oxygen-containing functional groups on the surface of polyvinyl alcohol (PVA),we successfully connected it with polyethyleneimine (PEI) polymer through a series of chemical modifications to obtain PEI-PVA nanospheres.The morphology and chemical compositions of the nanospheres were characterized by scanning electron microscopy and Fourier transform infrared spectroscopy.The results of batch experiments showed that PEI-PVA nanospheres had excellent adsorption effects for anionic surfactant wastewater under both acidic and alkaline conditions,and the adsorption capacity increased with the extension of the treatment time and tended to be stable after about 24h.The polymer film prepared from PEI-PVA nanospheres had great adsorption treatment effect and strong reusability,which had broad application prospects.
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