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首页> 外文期刊>Journal of Applied Polymer Science >The Glassy State,Ideal Glass Transition,and Second-Order Phase Transition
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The Glassy State,Ideal Glass Transition,and Second-Order Phase Transition

机译：玻璃态，理想玻璃化转变和二阶相变

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According to Ehrenfest classification,the glass transition is a second-order phase transition.Controversy,however,remains due to the discrepancy between ex-periment and the Ehrenfest relations and thereby their prediction of unity of the Prigogine-Defay ratio in particular,In this article,we consider the case of ideal (equilibrium) glass and show that the glass transition may be described thermodynam-ically.At the transition,we obtain the following relations:with #GAMMA# =TV(#alpha#_l#beta#_g-#alpha#_l)~2/#beta#_l#beta#_g#DELTA##beta#,instead of unity as predicted by the Ehrenfest relations.Dependent on the relative value of #DELTA#C_vand #GAMMA#,the ratio may take a number equal to,larger or smaller than unity.The incorrect assumption of perfect differentiability of entropy at the transition,leading to the second Ehrenfest relation,is rectified to resolve the long-standing dilemma perplexing the nature nature of the glass transition.The relationships obtained in this work are in agreement with experimental findings.
机译：根据Ehrenfest分类，玻璃化转变是二阶相变。但是，争议仍然存在，这是由于实验和Ehrenfest关系之间存在差异，因此尤其是他们对Prigogine-Defay比的统一性的预测。在本文中，我们考虑了理想（平衡）玻璃的情况，并表明可以热力学地描述玻璃化转变。在该转变处，我们获得以下关系：与＃GAMMA＃= TV（＃alpha＃_l＃beta＃_g -＃alpha＃_l）〜2 /＃beta＃_l＃beta＃_g＃DELTA ## beta＃，而不是Ehrenfest关系所预测的统一。取决于＃DELTA＃C_vand＃GAMMA＃的相对值，该比率可能会得出等于或大于或小于1的数字。纠正了过渡时熵完美可微性的错误假设，导致了第二个埃伦菲斯特关系，从而纠正了困扰玻璃过渡性质的长期困境。在这项工作中获得的关系是一致的实验结果。

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