紫外辐照法制备羧基化PP非织造布及其对壬基酚聚氧乙烯醚的吸附
发布时间：2019-08-07 18:20
【摘要】：为去除水中的壬基酚聚氧乙烯醚(NPE-10),采用紫外辐照方法将丙烯酸(AA)接枝到聚丙烯非织造布(PP)的表面,制备出表面羧基化吸附材料PP-g-AA,运用傅里叶变换红外光谱、扫描电子显微镜、接触角测量仪等手段对材料表面的结构和形貌进行表征,并考察溶液p H、温度以及PP-g-AA的接枝率对NPE-10吸附效果的影响.结果表明:溶液为中性或者偏酸性条件下,PP-g-AA对NPE-10的吸附效果较好;在中性条件下,PP-g-AA接枝率为80%时,对NPE-10的吸附量为138.7 mg/g,是原PP吸附量的6倍左右;温度高于45℃时,PP-g-AA对NPE-10的吸附能力下降;PP-g-AA对NPE-10的吸附符合准一级动力学模型.
[Abstract]:In order to remove nonylphenol polyoxyether (NPE-10) from water, acrylic acid (AA) was grafting onto the surface of polypropylene nonwovens (PP) by ultraviolet irradiation. The surface Carboxylated adsorption material PP-g-AA, was prepared and characterized by Fourier transform infrared spectroscopy, scanning electron microscope and contact angle measuring instrument. The surface structure and morphology of the material were characterized by means of Fourier transform infrared spectroscopy, scanning electron microscope and contact angle measuring instrument, and the solution pH was investigated. The effects of temperature and grafting ratio of PP-g-AA on the adsorption of NPE-10. The results show that when the solution is neutral or acidic, the adsorption effect of PP-g-AA on NPE-10 is better; under neutral condition, when the grafting ratio of PP-g-AA is 80%, the adsorption capacity of NPE-10 for NPE-10 is about 6 times of that of original PP; the adsorption capacity of PP-g-AA for NPE-10 decreases when the temperature is higher than 45 鈩，
本文编号：2524103
[Abstract]:In order to remove nonylphenol polyoxyether (NPE-10) from water, acrylic acid (AA) was grafting onto the surface of polypropylene nonwovens (PP) by ultraviolet irradiation. The surface Carboxylated adsorption material PP-g-AA, was prepared and characterized by Fourier transform infrared spectroscopy, scanning electron microscope and contact angle measuring instrument. The surface structure and morphology of the material were characterized by means of Fourier transform infrared spectroscopy, scanning electron microscope and contact angle measuring instrument, and the solution pH was investigated. The effects of temperature and grafting ratio of PP-g-AA on the adsorption of NPE-10. The results show that when the solution is neutral or acidic, the adsorption effect of PP-g-AA on NPE-10 is better; under neutral condition, when the grafting ratio of PP-g-AA is 80%, the adsorption capacity of NPE-10 for NPE-10 is about 6 times of that of original PP; the adsorption capacity of PP-g-AA for NPE-10 decreases when the temperature is higher than 45 鈩，
本文编号：2524103
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