引用本文:
王玮, 李来明, 席时权. 长链烷基胺氢卤酸盐的热致相变[J]. 应用化学,
1994, 11(2): 89-92.
Citation: Wang Wei, Li Laiming, Xi Shiquan. Thermotropic Phase Transition of n-Alkylammonium Halides[J]. Chinese Journal of Applied Chemistry, 1994, 11(2): 89-92.
Citation: Wang Wei, Li Laiming, Xi Shiquan. Thermotropic Phase Transition of n-Alkylammonium Halides[J]. Chinese Journal of Applied Chemistry, 1994, 11(2): 89-92.
长链烷基胺氢卤酸盐的热致相变
English
Thermotropic Phase Transition of n-Alkylammonium Halides
Abstract:
The thermotropic phase transition of a series of long-chain n-alkylammonium halides (CnH2n+1NH3X,n=8~18,X=Cl,Br) has been studied by differential scanning calorimetry.2 The results show that the main transition temperature of solid-solid structural phase transitions is proportional to the length of hydrocarbon chain.The reverse transitions of the structural transitions exhibit variously hysteresis effect.The melting temperatures decrease linearly with the increase of hydrocarbon chain length.The results suggest that the process of phase transition is relative to the aging and crystallization course of the crystalline samples.
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