Effects of thermal treatment on phase transitions and on the mechanical relaxation in poly(vinylidene fluoride)

N. Alves, C. X. Cardoso, A. Job, J. Giacometti
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引用次数: 3

Abstract

This work reports on the effects from thermal treatment in poly(vinylidene fluoride), PVDF, obtained with differential scanning calorimetry (DSC) and dynamic thermal analysis (DMA) measurements. It is shown that in successive DMA measurements performed with one sample the a relaxation peak almost disappears while the /spl gamma/ ' peak appears. The /spl alpha/ relaxation peak, at /spl sim/100/spl deg/C in DMA measurements, is attributed to the preferential orientation of chains in the amorphous phase while the /spl gamma/ ' relaxation peak, at /spl sim/50/spl deg/C, is related to the thermal treatment to which the sample was submitted.
热处理对聚偏氟乙烯相变和机械松弛的影响
本文报道了用差示扫描量热法(DSC)和动态热分析(DMA)测量得到的聚偏氟乙烯(PVDF)热处理的影响。结果表明,在对同一样品进行的连续DMA测量中,a松弛峰几乎消失,而/spl γ / '峰出现。在DMA测量中,在/spl sim/100/spl°C处的/spl α /弛豫峰归因于非晶相中链的优先取向,而在/spl sim/50/spl°C处的/spl γ / '弛豫峰与样品提交的热处理有关。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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