Analysis of Imidazoline Type Cationic Surfactants

Imidazoline계 양이온 계면활성제 분석

  • Bak, Hong-Soon (LG Chemical Ltd. Household & Health care products R&D Institute) ;
  • Choi, Kyu-Yeol (LG Chemical Ltd. Household & Health care products R&D Institute) ;
  • Lee, Jae-Duk (LG Chemical Ltd. Household & Health care products R&D Institute) ;
  • Kim, Yeo-Kyung (LG Chemical Ltd. Household & Health care products R&D Institute) ;
  • Ahn, Ho-Jeong (LG Chemical Ltd. Household & Health care products R&D Institute)
  • Received : 1998.01.14
  • Accepted : 1998.03.13
  • Published : 1998.06.10

Abstract

Analysis for the imidazoline type cationic surfactants was performed by the gas chromatography(GC) and high performance liquid chromatography(HPLC). The composition of the alkyl chain distribution was investigated by GC after base/Acid hydrolysis of the imidazoline ring. The distribution of total alkyl chain was separated clearly by a Bondclone C18/NOVA-Pak C18 HPLC column using 50% acetonitrile in methanol containing 0.1M sodium perchlorate as a mobile phase. Alkyl chain distribution and average molecular weight of imidazoline type cationic surfactants were obtained based on these analytical methods. The agreement of results from GC and HPLC was good. The detection limit of imidazoline by HPLC method was 10ng without pretreatment.

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