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首页> 外文期刊>Journal of Applied Polymer Science >Experimental design to evaluate the efficiency of maghemite nanoparticles incorporation in styrene-divinylbenzene copolymers
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Experimental design to evaluate the efficiency of maghemite nanoparticles incorporation in styrene-divinylbenzene copolymers

机译：试验设计，评价苯乙烯 - 二乙烯基苯共聚物掺入磁石纳米粒子掺入的效率

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摘要

Magnetized styrene-divinylbenzene resins can be obtained by inserting superparamagnetic nanoparticles of maghemite (gamma-Fe2O3) in the polymeric matrix. The incorporation of this nanoparticulate material can be influenced by several factors. The objective of this work was to evaluate the influence of these variables through an experimental design, where three factors were evaluated: cross-linking degree, initiator content and porogenic agent, at two levels. Subsequently, to evaluate the properties of the synthesized magnetized resins, magnetization curves were plotted using a vibrating sample magnetometer, thermal stability of the magnetized copolymer was determined by thermogravimetric analysis and the morphology was observed by scanning electron microscopy. The highest initiator content produced the greatest synthesis yield, and the presence of toluene had a positive effect on saturation magnetization, indicating that incorporation of maghemite in the polymer matrix and thermal degradation were influenced by higher divinylbenzene content.
机译：通过在聚合物基体中插入磁赤铁矿（γ-Fe2O3）的超顺磁性纳米颗粒，可以获得磁化的苯乙烯-二乙烯基苯树脂。这种纳米颗粒材料的掺入会受到几个因素的影响。这项工作的目的是通过实验设计来评估这些变量的影响，其中在两个水平上评估了三个因素：交联度、引发剂含量和致孔剂。随后，为了评估合成的磁化树脂的性能，使用振动样品磁强计绘制磁化曲线，通过热重分析测定磁化共聚物的热稳定性，并通过扫描电子显微镜观察其形态。引发剂含量越高，合成产率越高，甲苯的存在对饱和磁化强度有积极影响，表明二乙烯基苯含量越高，聚合物基体中磁赤铁矿的掺入和热降解受到影响。

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