聚吡咯/蒙脱石/聚丙烯复合膜的制备及吸附性能研究

Study of Adsorption Properties and Preparation of Polyproplene/Montmorillonite/Polypyrrole Composite Film

摘要: 以蒙脱石、间规聚丙烯粉末为原料，制备了聚丙烯基膜材料，采用熔融模压与涂覆成型相结合的材料成型法，将聚吡咯/蒙脱石与聚丙烯基膜复合，制备了一种可用于吸附水体中污染物的聚吡咯/蒙脱石/聚丙烯复合膜(本文以下简称复合膜)材料。采用XRD、FTIR、XPS等手段对制备的复合膜进行了表征，选用甲基橙染料作为吸附剂进行了吸附试验。表征结果表明聚吡咯/蒙脱石已经覆盖了聚丙烯基膜，改变了聚丙烯基膜的亲水性，使其具有吸附性能；复合膜吸附行为表明：其对甲基橙的吸附曲线随着吸附时间的增加而增加，对甲基橙的最大去除率达到95.98%，吸附过程以准二级动力学为主；复合膜对甲基橙吸附适应于Langmuir单分子层吸附模型；吸附等温线表现为随温度的增加而增大，表明升温有利于吸附过程的正向进行。

Abstract: The paper uses montmorillonite and Syndiotactic PP powder as raw material. PP film material was prepared. Material molding method is adopted in combination with melt molding and coating molding, Polypyrrole/montmorillonite is compounded with PP film to prepare Polypyr-role/montmorillonite/Polypropylene composite film (Hereinafter referred to as the composite film). The composite film was characterized by XRD, FTIR, and XPS. Adsorption experiments were carried out using methyl orange dye as the adsorption medium. The characterization results show that PPy/montmorillonite has covered the PP film and changed the hydrophilicity of the PP film to make it have Adsorption performance. The composite film adsorption behavior showed that the adsorption curves of methyl orange enhanced with the increase of adsorption time, and the max-imum removal rates of methyl orange were 95.98%. Adsorption process is based on the pseu-do-second order kinetics. The adsorption to methyl orange was adapted to Langmuir monolayer adsorption model. The adsorption isotherm is increased with the increase of the initial concentra-tion, and warming is beneficial to the positive process of the adsorption process.