| Organic synthetic oil-absorbing materials have attracted a great deal of attention in the field of oil spill adsorption in recent years because of their good hydrophobic and lipophilic properties,ease of industrial production,low cost and convenient use.Under the support of the National Natural Science Foundation of China(No.51375444),this paper mainly through the experimental research methods,combined with feedback system control technology,the use of electrospinning prepared with excellent hydrophobic properties,oil absorption properties and mechanical properties of the oil spill parameters optimization and analysis.The main work contents and results are as follows:(1)Based on the Feedback System Control Platform,the single-objective optimization of the hydrophobic property of the PS electrospun membrane fabricated by electrospinning was studied.This work provides an efficient method to investigate the integrated influence of different parameters on the property of electrospun membrane and quickly search for an optimal parameter combination to fabricate excellent superhydrophobic surface by electrospinning,by which only a few rounds of experiments are needed from a vast search space with multiple search parameters.The results showed that we fabricated an excellent superhydrophobic surface with CA values reaching up to 159.0° and SA smaller than 3° by one-step electrospinning without any further modification after 5 rounds of experiments.The regression model also determined the contribution of each parameter and their interactions to the CA value that lower mass fraction,THF ratio,feed rate,receiving distance,and temperature may benefit the CA value while the pinhole size and applied voltage have little effect.(2)Based on the feedback system control platform,the multi-objective optimization of the hydrophobic property,oil absorption property and mechanical property of the PS electrospun membrane fabricated by electrospinning was studied,so that to prepare an organic synthetic oil spill adsorbent with excellent overall performance.The results showed that we fabricated an PS/PAN composite fiber membrane with CA values reaching to 140.13°,oil absorption ratio for soybean oil reaching to 83.69g/g and tensile Strength reaching to 4.06Mpa by one-step electrospinning after 6 rounds of experiments.In addition,the polynomial equations of the linear,square and cross terms of the target parameters with respect to the conditional parameters are established by the regression model,and the comprehensive influence of the cross-interaction between different parameters and parameters on the target performance is explored.And through verification experiment,we studied the change of target parameters with two condition parameters in the optimal combination varying at a time.(3)Compared with kapok and PP-1 oil sorbent mat,the PS/PAN composite membrane prepared by the multi-objective optimized parameters combination showed a good oil spill adsorption comprehensive performance.The oil absorption ratios for different oils,oil absorption rate,retention,selectivity to oil and water and buoyancy of these three oil spill adsorption materials were compared in this work.The results showed that PS/PAN composite membrane had the highest oil absorption ratio,oil absorption rate and oil retention rate,and the selectivity to oil and water was also higher than the other two adsorbents,buoyancy is also not inferior to the other two adsorbents.its excellent performance making it has a huge application prospects in the oil spill adsorption area.This work applied the feedback system control platform to optimized the electrospinning for fabrication of electrospun membrane with targeted properties,and explored a new way for the effective application of electrospinning technology. |
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