聚苯胺的低温比热研究  

The specific heat of polyaniline at low-temperature

作　　者：许杰[1] 雒建林[1] 陈兆甲[1] 龙云泽[1] 白海洋[1] 万梅香[2] 王万录[3] 

机构地区：[1]中国科学院物理研究所,北京100080 [2]中国科学院化学研究所,北京100080 [3]重庆大学数理学院应用科学与技术系,重庆400044

出　　处：《物理学报》2003年第4期947-951,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :10 0 740 80 )资助的课题~~

摘　　要：测量了聚苯胺的中间氧化态以及掺杂盐酸后的样品在 1.8至 4 5K范围内的比热 ,比热数据可以用非晶态和晶态两部分的贡献来解释 .利用声子 分形子模型成功地解释了低温下比热高于德拜理论趋势的反常现象 .从本文的实验数据来看 。The specific heat of the emeraldine base form of polyaniline and the emeradine salt of polyaniline has been measured at temperatures between 1.8 and 45K. The experimental results have been interpreted in terms of the contributions from both the crystalline and the amorphous phases characterizing the polymer. Anomaly of the specific heat, which is much larger than that expected from the Debye theory, has been successfully explained by the phonon-fracton model at low temperatures. The electronic specific heat has not been observed from the present data.

关 键 词：聚苯胺 低温比热 中间氧化态 声子—分形子模型 盐酸掺杂 

分 类 号：O482.4[理学—固体物理]