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摘要
以甲基丙烯酸丁酯(BMA)、甲基丙烯酸甲酯(MMA)和苯乙烯(St)为单体,二乙烯苯为交联剂,失水山梨醇油酸酯(Span80)为乳化剂,偶氮二异庚腈(ABVN)为引发剂,通过反相高内相乳液法制备大孔超疏水聚(甲基丙烯酸丁酯-甲基丙烯酸甲酯-苯乙烯)吸油材料。采用傅里叶变换红外光谱仪、光学显微镜和接触角测量仪对大孔超疏水吸油材料的结构、形貌和疏水性能进行表征,考察了单体配比和吸油时间对大孔超疏水吸油材料吸油率的影响,评价了材料的油水分离能力。结果表明,以m(BMA)∶m(MMA)∶m(St)=7∶1∶2制备的大孔超疏水材料吸油保油性能最佳,对二氯甲烷的吸附量高达45.901g/g,离心保油率达到97.18%。此外,该材料具有超疏水和亲油性,水接触角可达到155°,15s内可完全吸附水中的甲苯,在油水分离中具有潜在应用价值。
Abstract
Macroporous and super-hydrophobic oil absorbing materials (P(BMA-co-MMA-co-St)) was synthesized by high internal phase emulsion method using butyl methacrylate (BMA),methyl methacrylate (MMA) and styrene (St) as monomers,divinylbenzene (DVB) as crosslinking agent,Span 80 as emulsifier,and 2,2′-azobis(2,4-dimethyl) valeronitrile (ABVN) as initiator.First,the pore structure and hydrophobic properties of the macroporous materials were characterized by FT-IR,optical microscopy and contact angle test,respectively.Second,the effects of monomer ratio and oil absorption time on oil absorption rate of the macroporous materials were investigated.Lastly,the oil-water separation performance of porous resin was evaluated.The results showed that P(BMA-co-MMA-co-St) macroporous material displayed the optimal oil absorption and retention performance when the mass ratio of BMA,MMA and St was 7∶1∶2,and the maximum adsorption capacity of the macroporous materials towards dichloromethane was as high as 45.901g/g with the oil retention rate reaching above 97.18%.In addition,the macroporous material exhibited super-hydrophobicity and lipophilicity with the water contact angle (WCA) of 155° and was able to completely absorb toluene in water within 15s;therefore,it was expected to be applied in oil-water separation treatment.
关键词
高内相乳液法
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丙烯酸酯
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大孔结构
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超疏水
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油水分离
Key words
high internal phase emulsion method
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acrylate
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macroporous structure
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super-hydrophobic
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oil-water separation
高内相乳液法制备大孔超疏水吸油材料及性能研究[J].
化工新型材料, 2022, 50(12): 283-287 DOI:10.19817/j.cnki.issn1006-3536.2022.12.053
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基金资助
国家自然科学基金(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)
