应用高能辐照法制备新型高吸附聚丙烯功能纤维

Preparation of a High Sorption Polypropylene Fiber by Electron Beam Grafting Polymerization

文章通过高能辐照诱导接枝的方法,在聚丙烯(PP)纤维基体表面引入对苯乙烯磺酸钠(SS)单体,制备一种新型的高性能吸附材料,进而对油气田水环境中的微溶毒性有机物进行有效吸附。利用扫描电子显微镜(SEM)和静态接触角(CA)对接枝改性前后聚丙烯纤维基体表面的形态结构及疏水性能进行了表征。实验结果证明:功能纤维的接枝率可以通过改变接枝条件得到有效控制。此外,文章还以丙烯酰胺为被吸附有机物考察了纤维改性前后的吸附性能。当改性聚丙烯纤维的接枝率为15.35%时,其对水中丙烯酰胺的去除率从原纤维的25.4%提高到87.4%,极大提高了对油气田水环境中的丙烯酰胺等有机物的处理能力。

The aim of this study is to prepare a new composite sorbent,as an environmental friendly sorbent material for the removal poisonous organic chemicals from water in the oil and gas fields,and the sorbent is made by offsetting sodium p-styrenesulfonate monomer(SS)onto polypropylene fiber substrate through Electron Beam Grafting Polymerization. The morphological structure and hydrophobicity of polypropylene fiber before and after graftingare described by FTIR,SEM and CA technique.It is found that thedegree of grafting strongly depends on the grafting conditions.In addition,the sorption performances of original and grafted fiber(PPg-SS)are evaluated by using acrylamide(AAM)as the adsorbate. When the grafting degree of PP-g-SS is 15.35%,the maximum removal rate of AAM reached 87.4%,while the original PP fiber is only 25.4%.Accordingly,the ability of dealing with the leakage of acrylamide and other organics in oil and gas fields has been advanced.