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- NAKAMURA Kiyoshi
- Shiseido Laboratories
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- MATSUMOTO Isao
- Shiseido Laboratories
Bibliographic Information
- Other Title
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- 高速液体クロマトグラフィーの化粧品分析への応用 (第3報)
- コウソク エキタイ クロマトグラフィー ノ ケショウヒン ブンセキ エ ノ オ
- Analysis of Polyethylene Glycol in Ethylene Oxide Adduct Nonionic Surfactants
- 非イオン界面活性剤中の副成ポリエチレングリコールの分析
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Description
Average molecular weights and molecular distributions of polyethylene glycol (PEG) as a byproduct in ethylene oxide adduct nonionic surfactants (EO-SAA) were studied by gel permeation chromatography (GPC). <BR>Every PEG were perfectly separated from various EO-SAA through the reversed-phase column chromatography. <BR>Standard PEG (n=5, 6, 7, 8, 9, and 10) were isolated from the commercial PEG 300 by recycle GPC and the purities of them were identified by GC. Average molecular weights per 1 Å of them were found to be calculated as 24 by making that of polystylene as 41. <BR>By using this value, the chromatograms of each PEG, the calibration curve of standard polystylene and a curve-reader CPU system, the average molecular weights of PEG in EO-SAA could be easily determined. <BR>The average molecular weights of isolated PEG in EO-SAA of ether type were shown to be almost constant values, while those in ester type were dependent on the EO molecular numbers of the original EO-SAA. The values of those in Tween type EO-SAA coincided with those of the average 20 molecular numbers of EO-SAA of ester type. <BR>Further, the molecular distributions of various commercial PEG were also presented in this paper.
Journal
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- Journal of Japan Oil Chemists' Society
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Journal of Japan Oil Chemists' Society 26 (8), 464-469, 1977
Japan Oil Chemists' Society
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Details 詳細情報について
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- CRID
- 1390282680307926272
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- NII Article ID
- 130001014884
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- NII Book ID
- AN00245435
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- ISSN
- 0513398X
- 18842003
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- NDL BIB ID
- 1841772
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- Data Source
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- JaLC
- NDL Search
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed