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Effect of needle diameter on nanofiber diameter and thermal properties of electrospun poly(methyl methacrylate)

机译:针头直径对电纺聚甲基丙烯酸甲酯纳米纤维直径和热性能的影响

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摘要

The effect of needle diameter on the resulting electrospun poly(methyl methacrylate) (PMMA) average nanofiber diameter has been evaluated for three different needle gauges. The resulting nanofibers were observed and analyzed by scanning electron microscopy (SEM), suggesting a lack of correlation between the needle diameter used and the resulting average nanofiber diameter. Thermogravimetric analysis (TGA) indicated an increase in the thermal stability of PMMA nanofibers when compared to powdered PMMA, while differential scanning calorimetry (DSC) studies evidenced lower glass transition temperatures (Tg) for PMMA nanofibers in the first heating cycle.
机译:对于三种不同的针规,已经评估了针头直径对所得电纺聚甲基丙烯酸甲酯(PMMA)平均纳米纤维直径的影响。通过扫描电子显微镜(SEM)观察和分析所得的纳米纤维,表明所用的针直径与所得的平均纳米纤维直径之间缺乏相关性。热重分析(TGA)表明,与粉末状PMMA相比,PMMA纳米纤维的热稳定性有所提高,而差示扫描量热法(DSC)研究表明,在第一个加热周期中,PMMA纳米纤维的玻璃化转变温度(Tg)较低。

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