A series of novel amphiphilic functionalized fibers with polarity tunable surface microenvironment were constructed by introducing hydrophilic polyamines and hydrophobic linear alkyl chain groups, aiming to selectively remove parabens from water. In addition, Fourier-transform infrared spectroscopy, X-ray powder diffraction, scanning electron microscopy, etc. were employed to determine the successful preparation of amphiphilic functionalized fibers. The adsorption experimental data indicated that the amphiphilic fibers showed excellent selectivity for parabens. In the amphiphilic fibers, hydrogen bonding and hydrophobic interaction existing in one molecular unit can effectively act together to enhance the interaction between substrate and fibers. Kinetic studies illustrated that the adsorption process was a physical adsorption with chemical characteristics. The overall initial adsorption rate together with the stepwise adsorption rate was quantified, and it is inferred that the hydrophobic interaction plays a leading role in the first step of the adsorption process. Moreover, the Freundlich model well described the sorption process with a maximum adsorption of 138.4 mg/g. What's more, the fiber still keeps excellent adsorption capacity (>90%) even after 10 adsorption/desorption cycles, which certifies it is an excellent adsorbent and can be utilized to remove paraben in practice.

中文翻译：

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具有可调表面微环境的两亲功能化聚丙烯纤维对对羟基苯甲酸酯的协同吸附。

通过引入亲水性多胺和疏水性线性烷基链基团，构建了一系列具有极性可调表面微环境的新型两亲功能化纤维，旨在从水中选择性去除对羟基苯甲酸酯。此外，采用傅立叶变换红外光谱，X射线粉末衍射，扫描电子显微镜等方法来确定两亲功能化纤维的成功制备。吸附实验数据表明，两亲纤维对尼泊金酯具有极好的选择性。在两亲性纤维中，一个分子单元中存在的氢键键合和疏水相互作用可以有效地共同起作用，以增强底物和纤维之间的相互作用。动力学研究表明，吸附过程是具有化学特征的物理吸附。定量了总体初始吸附速率和逐步吸附速率，并推断疏水相互作用在吸附过程的第一步中起主要作用。此外，Freundlich模型很好地描述了最大吸附量为138.4 mg / g的吸附过程。此外，即使经过10次吸附/解吸循环，该纤维仍保持出色的吸附能力（> 90％），这证明它是一种出色的吸附剂​​，在实践中可用于去除对羟基苯甲酸酯。可以推测，疏水作用在吸附过程的第一步中起着主导作用。此外，Freundlich模型很好地描述了最大吸附量为138.4 mg / g的吸附过程。此外，即使经过10次吸附/解吸循环，该纤维仍保持出色的吸附能力（> 90％），这证明它是一种出色的吸附剂​​，在实践中可用于去除对羟基苯甲酸酯。可以推测，疏水作用在吸附过程的第一步中起着主导作用。此外，Freundlich模型很好地描述了最大吸附量为138.4 mg / g的吸附过程。此外，即使经过10次吸附/解吸循环，该纤维仍保持出色的吸附能力（> 90％），这证明它是一种出色的吸附剂​​，在实践中可用于去除对羟基苯甲酸酯。