物理化学学报 >> 2007, Vol. 23 >> Issue (05): 709-712.doi: 10.3866/PKU.WHXB20070516

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时域反射谱法研究烷基丙烯酸酯与酚复合的介电弛豫

LIAKATH ALI KHAN F.; SIVAGURUNATHAN P.; MEHROTRA S. C.   

  1. Annamalai University, Annamalai Nagar, Tamil Nadu-608 002, India; 2Dr. B.A.M. University, Aurangabad-431 004 Maharashtra, India
  • 收稿日期:2006-10-18 修回日期:2006-12-26 发布日期:2007-04-28
  • 通讯作者: LIAKATH ALI KHAN F.; E-mail:shamisardar@yahoo.com

Dielectric Relaxation Studies of Alkyl Acrylates on Complexation with Phenols Using Time Domain Reflectometry

LIAKATH ALI KHAN F.; SIVAGURUNATHAN P.; MEHROTRA S. C.   

  1. Annamalai University, Annamalai Nagar, Tamil Nadu-608 002, India; 2Dr. B.A.M. University, Aurangabad-431 004 Maharashtra, India
  • Received:2006-10-18 Revised:2006-12-26 Published:2007-04-28
  • Contact: LIAKATH ALI KHAN F.; E-mail:shamisardar@yahoo.com

摘要: The dielectric relaxation measurements on binary mixtures of esters (methyl acrylate, ethyl acrylate, and butyl acrylate) with phenol derivatives (p-cresol, p-chlorophenol, and 2,4-dichlorophenol) were carried out at different concentrations at 303 K using the time domain reflectometry (TDR) over the frequency range from10 MHz to 20 GHz. The Kirkwood correlation factor and excess inverse relaxation time were determined and discussed to yield information on the molecular interactions of the systems. The relaxation time increased with increasing concentration of phenols and increasing chain length of esters. The excess inverse relaxation time values were negative for all the systems, which indicated the solute-solvent interaction existing between esters and phenols producing a field in such a way that the effective dipole rotation was hindered.

关键词: Dielectric relaxation, Time domain reflectometry, Phenol derivatives

Abstract: The dielectric relaxation measurements on binary mixtures of esters (methyl acrylate, ethyl acrylate, and butyl acrylate) with phenol derivatives (p-cresol, p-chlorophenol, and 2,4-dichlorophenol) were carried out at different concentrations at 303 K using the time domain reflectometry (TDR) over the frequency range from10 MHz to 20 GHz. The Kirkwood correlation factor and excess inverse relaxation time were determined and discussed to yield information on the molecular interactions of the systems. The relaxation time increased with increasing concentration of phenols and increasing chain length of esters. The excess inverse relaxation time values were negative for all the systems, which indicated the solute-solvent interaction existing between esters and phenols producing a field in such a way that the effective dipole rotation was hindered.

Key words: Dielectric relaxation, Time domain reflectometry, Phenol derivatives

MSC2000: 

  • O641