高内相乳液模板法制备P(BMA-co-MMA)多孔树脂及吸油性能
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安徽大学

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国家自然科学基金资助项目(51973001);安徽省高等学校自然科学研究重大项目(KJ2019ZD01);安徽省留学人员创新项目择优资助计划重点项目(2019LCX006)


Preparation of Porous P(BMA-co-MMA) Resin by High Internal Phase Emulsion Template Method and Its Oil Absorption Performance
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    摘要:

    采用高内相乳液模板法,以甲基丙烯酸丁酯(BMA)和甲基丙烯酸甲酯(MMA)为单体、二乙烯苯(DVB)为交联剂、失水山梨醇油酸酯(Span 80)为乳化剂、偶氮二异庚腈(AVBN)为引发剂,合成了可压缩、高弹性的P(BMA-co-MMA)多孔吸油树脂。采用红外光谱和扫描电镜对多孔树脂的结构进行表征,并测试了多孔树脂的力学性能,考察了单体配比和表面活性剂用量对树脂吸油性能的影响,评价了其油水分离性能。结果表明,以m(BMA):m(MMA)=7:3,Span 80用量占单体总质量的16.67 %,制备的P(BMA-co-MMA)多孔树脂的吸油性能最佳,对二氯甲烷的吸附量高达51.95 g/g,保油率可达93 %以上。此外,该多孔树脂具有良好的超亲油疏水性,水接触角(WCA)可达到143°,与油接触角接近0°,能够在20 s内完全吸附水中的甲苯,有望在油水分离方面得到应用。

    Abstract:

    Compressible and elastic porous oil absorbent resins of P(BMA-co-MMA) were synthesized by high internal emulsion template method using butyl methacrylate (BMA) and methyl methacrylate (MMA) as monomer, divinylbenzene (DVB) as crosslinking agent, sorbitan monooleate (Span 80) as emulsifier, and 2,2"-azobis(2,4-dimethyl) valeronitrile (ABVN) as initiator. The structure of porous P(BMA-co-MMA) resins was characterized by FT-IR and SEM, and the mechanical properties of porous resins were tested. The effects of the monomer ratio and surfactant amount on oil absorption performance of the porous resins were investigated, and the oil-water separation performance of porous resins was evaluated. The results show that the porous P(BMA-co-MMA) resin display the optimal oil absorption performance when the mass ratio of BMA and MMA is 7:3 and the amount of emulsifier accounts for 16.67 % of the mass of monomers. The maximum adsorption capacity of the porous resin towards dichloromethane is as high as 51.95 g/g with the oil retention rate reaching above 93%. In addition, the porous resin exhibits a high hydrophobicity with the water contact angle (WCA) of 143° and superoleophilicity with oil contact angle of 0°. The porous resin completely absorbs toluene in water within 20 s, which is expected to be applied in oil-water separation treatment.

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历史
  • 收稿日期:2021-07-06
  • 最后修改日期:2021-12-14
  • 录用日期:2022-11-07
  • 在线发布日期: 2022-03-25
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