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摘要
以聚乙二醇甲基丙烯酸甲酯(PEGMEMA)和甲基丙烯酸甲酯(MMA)为原料,用偶氮二异丁腈引发合成聚甲基丙烯酸甲酯-g-聚乙二醇甲基丙烯酸甲酯(PMMA-g-PEO)共聚物。通过静电纺丝制备了PMMA-g-PEO纳米纤维膜,并通过表面改性制备了功能梯度材料。通过正交设计,探究了水解工艺中浓度、温度和时间3个因素对纤维膜吸附性能的影响,利用傅里叶红外光谱与扫描电镜分别对纳米纤维改性前后的结构与外观形态进行表征。结果表明:引入的亲水性支链有效地改善了PMMA的可纺性;在NaOH浓度为0.5mol/L,反应时间为8h,反应温度为70℃的水解工艺条件下,功能化纤维膜具有较好的铅离子吸附能力,吸附容量为113.85mg/g。
Abstract
PMMA-g-PEO copolymer was prepared with poly(ethylene glycol) methyl ether methacrylate(PEGMEMA) and methyl methacrylate (MMA) as monomer and azodiisobutyronitrile(AIBN) as initiator.PMMA-g-PEO nanofiber membrane was prepared by electrospinning,further the functional gradient material were prepared by surface modification.By means of orthogonal design,the influence of three factors include the hydrolysis concentration,temperature and time on the adsorption of nanofiber were explored.The nanofiber was characterized by fourier transform infrared spectroscopy and scanning electron microscopy before and after the modification of its structure and appearance respectively.The results showed that the introduction of hydrophilic branched chain effectively improved the spinnability.The functional fiber membrane had better lead ion adsorption capacity when NaOH concentration 0.5mol/L,the reaction time 8h,the reaction temperature 70℃,and the adsorption capacity was 113.85mg/g.
关键词
PMMA-g-PEO
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静电纺丝
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吸附
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正交设计
Key words
PMMA-g-PEO
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electrospinning
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adsorption
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orthogonal design
功能化PMMA-g-PEO纳米纤维膜的制备与表征[J].
化工新型材料, 2017, 45(9): 53-55 DOI:
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基金资助
国家自然科学基金资助项目(21302011)
