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首页> 外文期刊>Journal of the Indian Chemical Society >Speeds of sound and isentropic functions of triethylene glycol monoethyl ether-n-alcohol mixtures at 298.15 K
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Speeds of sound and isentropic functions of triethylene glycol monoethyl ether-n-alcohol mixtures at 298.15 K

机译：三乙二醇单乙醚-正醇混合物在298.15 K时的声速和等熵功能

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摘要

The speed of sound measurements have been made using a NUSONIC velocimeter based on the sing-around technique, for binary liquid mixtures of triethylene glycol monoethyl ether with methanol, ethanol, 1-propanol, 1-butanol, 1-pentanol, and 1-hexanol at 298.15 K and atmospheric pressure, across the entire composition range. Their values have been combined with those of the excess molar volumes converted to densities to give estimates of the isentropic molar quantity, ks, equal to -(#delta#v/#delta#p)_s, and of its excess counterpart, k_S~E. The magnitude of ks~E decreases with increasing chain-length of the n-alcohol. The excess isentropic comperssibilities have been compared with our previous published data with an effort to assess the effects of replacing methyl by ethyl groups and of inserting oxyethylene groups. Also, the deviations of the speeds of sound #DELTA#u have been calculated for all measured values of x1. The behaviour of u, #DELTA#u, and k_S~E with composition and the number of carbon atoms in the alcohol molecule is discussed.
机译：声音测量的速度已使用NUSONIC测速仪，基于单次旋转技术，用于三甘醇单乙醚与甲醇，乙醇，1-丙醇，1-丁醇，1-戊醇和1-己醇的二元液体混合物在整个组成范围内，在298.15 K和大气压力下。将它们的值与转换为密度的多余摩尔体积的值相结合，以得出等熵摩尔量ks等于-（＃delta＃v /＃delta＃p）_s以及其过量对应物k_S〜的估计值。 E． ks〜E的幅度随正构醇链长的增加而减小。过量的等熵可比性已与我们以前发表的数据进行了比较，以评估用乙基取代甲基和插入氧乙烯基的效果。而且，已经针对x 1的所有测量值计算了声速＃DELTA＃u的偏差。讨论了u，＃DELTA＃u和k_S〜E的行为与醇分子中的组成和碳原子数的关系。

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