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Mechanical properties of transparent poly(methyl methacrylate) nanocomposites reinforced with core–shell polyacrylonitrile/poly(methyl methacrylate) nanofibers
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-03-09 , DOI: 10.1002/app.49192 Sedigheh Borhani 1 , Ali Zadhoush 1 , Meysam Fathi 1
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2020-03-09 , DOI: 10.1002/app.49192 Sedigheh Borhani 1 , Ali Zadhoush 1 , Meysam Fathi 1
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Having considered the mechanical and optical properties related to microstructure, the authors of the present work did a study of the in situ interface formation between polyacrylonitrile/poly(methyl methacrylate) (PAN/PMMA) core–shell nanofibers and PMMA resin so as to prepare reinforced PMMA nanocomposites (NCs). The NCs were produced using the dip‐coating method. The core–shell nanofibers were generated via phase separation of PAN/PMMA solution during the conventional electrospinning. The results of attenuated total reflection‐Fourier transform infrared spectroscopy, transmission electron microscope, and energy dispersive X‐ray spectrometer confirmed the formation of core–shell structure of the PAN/PMMA nanofibers. According to the findings of the study, the NCs reinforced with 1.7% volume fractions (v
f ) of the core–shell nanofibers, having the composition of 50/50 (PAN/PMMA), had the highest tensile and bending properties. The obtained results showed that by increasing the v
f of nanofibers from 1.7 to 2.9%, the tensile and bending moduli increased by 29.9 and 44.2%, respectively. Increasing v
f to 5.7% decreased the just‐mentioned properties. Moreover, the transparency of NCs decreased by less than 1, 10, and 18%, respectively, when the aforementioned volume fractions were applied. The theoretical values for the tensile modulus were calculated using the models proposed by Manera, Pan, and Halpin–Tsai–Nielsen. The best prediction was made when the model proposed by Halpin–Tsai–Nielsen was applied.
中文翻译：
核壳型聚丙烯腈/聚甲基丙烯酸甲酯纳米纤维增强的透明聚甲基丙烯酸甲酯纳米复合材料的机械性能
考虑到与微观结构有关的机械和光学特性，本文作者对聚丙烯腈/聚甲基丙烯酸甲酯（PAN / PMMA）核-壳纳米纤维与PMMA树脂之间的原位界面形成进行了研究，从而制备了增强的PMMA纳米复合材料（NC）。NC使用浸涂法生产。核-壳纳米纤维是在常规电纺过程中通过PAN / PMMA溶液的相分离产生的。衰减全反射傅里叶变换红外光谱，透射电子显微镜和能量色散X射线光谱仪的结果证实了PAN / PMMA纳米纤维的核-壳结构的形成。根据研究结果，NC的体积分数为1.7％（v f 芯-壳纳米纤维的组成为50/50（PAN / PMMA），具有最高的拉伸和弯曲性能。所得结果表明，通过将纳米纤维的v f从1.7％增加到2.9％，拉伸模量和弯曲模量分别增加了29.9％和44.2％。将v f增加到5.7％会降低上述属性。而且，当应用上述体积分数时，NC的透明度分别降低小于1、10和18％。使用Manera，Pan和Halpin–Tsai–Nielsen提出的模型计算拉伸模量的理论值。当应用Halpin–Tsai–Nielsen提出的模型时，做出了最佳预测。
更新日期：2020-03-09
中文翻译：
核壳型聚丙烯腈/聚甲基丙烯酸甲酯纳米纤维增强的透明聚甲基丙烯酸甲酯纳米复合材料的机械性能
考虑到与微观结构有关的机械和光学特性，本文作者对聚丙烯腈/聚甲基丙烯酸甲酯（PAN / PMMA）核-壳纳米纤维与PMMA树脂之间的原位界面形成进行了研究，从而制备了增强的PMMA纳米复合材料（NC）。NC使用浸涂法生产。核-壳纳米纤维是在常规电纺过程中通过PAN / PMMA溶液的相分离产生的。衰减全反射傅里叶变换红外光谱，透射电子显微镜和能量色散X射线光谱仪的结果证实了PAN / PMMA纳米纤维的核-壳结构的形成。根据研究结果，NC的体积分数为1.7％（v f 芯-壳纳米纤维的组成为50/50（PAN / PMMA），具有最高的拉伸和弯曲性能。所得结果表明，通过将纳米纤维的v f从1.7％增加到2.9％，拉伸模量和弯曲模量分别增加了29.9％和44.2％。将v f增加到5.7％会降低上述属性。而且，当应用上述体积分数时，NC的透明度分别降低小于1、10和18％。使用Manera，Pan和Halpin–Tsai–Nielsen提出的模型计算拉伸模量的理论值。当应用Halpin–Tsai–Nielsen提出的模型时，做出了最佳预测。
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