Surface grafting of styrene on polypropylene fibers by argon plasma and its adsorption-regeneration of BTX

3rd International Conference on Water Resource and Environment

地球科学;生态环境科学

Xu, J.J.^1 ; Guo, M.L.^2 ; Chen, Q.G.^1 ; Lian, Z.Y.^1 ; Wei, W.J.^1 ; Luo, Z.W.^3 ; Xie, G.^1 ; Chen, H.N.^1 ; Dong, K.^1

School of Environment Science and Engineering, Nanjing Tech University, Nanjing

211800, China^1

School of Chemical Engineering, Nanjing Tech University, Nanjing

211800, China^2

School of Safety Science and Engineering, Nanjing Tech University, Nanjing

211800, China^3

关键词: Adsorption capacities;    Adsorption efficiency;    Adsorption experiment;    Grafting reactions;    Irradiation time;    Plasma irradiations;    Polypropylene fiber;    Reaction parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/82/1/012077/pdf
DOI  :  10.1088/1755-1315/82/1/012077

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Active macromolecular free radicals were generated on polypropylene (PP) fibers surfaces by argon (Ar) plasma irradiation, then, PP surface modified fibers (PP-g-St fibers) were prepared by in-situ grafting reaction of styrene monomers (St). Effects of reaction parameters on grafting percentage were studied and adsorption capacities of PP-g-St fibers for benzene, toluene and xylene (BTX) were evaluated. Afterwards, regeneration adsorption efficiencies after maximum adsorption were explored. The results indicated that the optimum input power, irradiation time and grafting reaction time are 90 W, 3 min and 3 h respectively and the grafting percentage of St reached 5.7 %. The adsorption capacities of PP-g-St fibers towards toluene and xylene emulsions and solutions in water increased by 336.89 % and 344.57 % respectively, compared to pristine PP fibers. In addition, regeneration adsorption efficiencies of modified fibers remained > 90 % after six cycles of regeneration-adsorption experiments, which showed excellent regeneration ability.