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首页> 外文期刊>Journal of Applied Polymer Science >Biomineralized polypropylene/CaCO_3 composite nonwoven meshes for oil/water separation
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Biomineralized polypropylene/CaCO_3 composite nonwoven meshes for oil/water separation

机译：生物矿化聚丙烯/ CaCO_3复合无纺布网，用于油/水分离

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摘要

Polypropylene/calcium carbonate (CaCO_3) composite nonwoven meshes were prepared on the basic principle of biomineralization by using a facile alternate soaking process (ASP) within 20 min. Negatively charged poly(acrylic acid) brushes, which can induce CaCO_3 nucleation, were first tethered onto the fiber surface of polypropylene nonwoven meshes via UV-induced graft polymerization. ASP procedure was followed to mineralize CaCO_3 particles on the fiber surface and to form the composite nonwoven meshes. Fourier transform infrared spectroscopy/attenuated total reflectance, field emission scanning electron microscope, equipped X-ray spectroscope, and X-ray diffraction were used to characterize the prepared composite meshes. The mineral cover density increased with the ASP cycles, and it progressively increased for the relative content of calcite in the crystalline part of the mineral layer as well. Contact angle measurements indicate that the as-prepared composite nonwoven meshes were endowed with superhydrophilicity and underwater superoleophobicity, thus they showed prominent application prospects in wastewater treatment and oil/water separation.
机译：聚丙烯/碳酸钙（CaCO_3）复合非织造网布是根据生物矿化的基本原理，通过在20分钟内使用便捷的交替浸泡工艺（ASP）制备的。带负电荷的聚（丙烯酸）刷（可引起CaCO_3成核）首先通过紫外线诱导的接枝聚合作用拴在聚丙烯非织造网的纤维表面。遵循ASP程序以使纤维表面上的CaCO_3颗粒矿化并形成复合无纺网。使用傅立叶变换红外光谱/衰减全反射率，场发射扫描电子显微镜，配备的X射线光谱仪和X射线衍射来表征制备的复合材料网。矿物覆盖密度随ASP循环的增加而增加，并且对于矿物层结晶部分中方解石的相对含量也逐渐增加。接触角测量表明，所制备的复合非织造布具有超亲水性和水下超疏油性，因此在废水处理和油水分离中显示出广阔的应用前景。

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