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首页> 外文会议>Annual conference of the North American Thermal Analysis Society >Dynamic Fragility of a Polymer Glass-Former by Differential Scanning Calorimetry
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Dynamic Fragility of a Polymer Glass-Former by Differential Scanning Calorimetry

机译：差示扫描量热法测定聚合物玻璃前体的动态脆性

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The dynamic fragility (m) of polysulfone (PSF) is reported to be 141 by birefringence and 149 by dielectric relaxation spectroscopy (DRS). However, recent studies have reported polysulfone dynamic fragility values of 124 ± 20 and 286 ± 25 for commercially received and after a washing/precipitation treatment, respectively. In the current work, the dynamic fragilities of polysulfone (PSF) as received and after wash-precipitation are measured using differential scanning calorimetry (DSC). The dynamic fragility was obtained by using the obtained fictive temperatures after cooling at different rates followed by a constant heating rate. The results from the current study are compared with previously reported literature polysulfone dynamic fragility data.
机译：据报道，聚砜（PSF）的动态脆性（m）通过双折射为141，而通过介电弛豫光谱法（DRS）为149。然而，最近的研究报道，对于商业上接受的和在洗涤/沉淀处理之后，聚砜的动态脆性值分别为124±20和286±25。在当前的工作中，使用差示扫描量热法（DSC）测量接收到的和洗涤沉淀后的聚砜（PSF）的动态脆性。动态脆性是通过使用以不同速率冷却然后以恒定加热速率冷却后获得的虚拟温度获得的。将当前研究的结果与先前报道的文献中的聚砜动态脆性数据进行比较。

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