聚乙烯的热容IV. 高分子量线性聚乙烯
Heat Capacities of Polyethylene IV. High Molecular Weight Linear Polyethylene.
作者信息
Chang Shu-Sing
机构信息
Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20234.
出版信息
J Res Natl Bur Stand A Phys Chem. 1976 Jan-Feb;80A(1):51-57. doi: 10.6028/jres.080A.009. Epub 1976 Feb 1.
A high molecular weight linear polyethylene sample has been studied by adiabatic calorimetry from 10 to 380 K. Two broad temperature regions of unusual spontaneous temperature drift have been observed. The phenomena occurring around 240 K are similar to that observed in other polyethylene samples studied in this series, and are presumed to be caused by the relaxational processes in the amorphous phase. The weak exothermic behavior occurring around 160 K is presumed to be caused by the stabilization of the quenched sample.
通过绝热量热法对一种高分子量线性聚乙烯样品在10至380K的温度范围内进行了研究。观察到两个存在异常自发温度漂移的宽温度区域。在240K左右出现的现象与本系列研究的其他聚乙烯样品中观察到的现象相似，推测是由非晶相中的弛豫过程引起的。在160K左右出现的微弱放热行为推测是由淬火样品的稳定化引起的。
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