Solid-state13C-NMR analysis of size components in handsheets prepared by fatty acid soap size-alum systems

2002 ◽  
Vol 48 (3) ◽  
pp. 197-203 ◽  
Author(s):  
Kazuo Ohno ◽  
Akira Isogai ◽  
Fumihiko Onabe
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Soap ◽  
Acid Soap ◽  
Nmr Analysis

scholarly journals Properties of Fatty Acid Soap that Counter-ion is Sodium N-Methyltaurine.

2001 ◽  
Vol 50 (10) ◽  
pp. 823-830 ◽  
Author(s):  
Reiji MIYAHARA ◽  
Kouji ABE ◽  
Takahiro AKUTSU ◽  
Kunihiko YOSHIDA ◽  
Tomiyuki NAMBA
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Soap ◽  
Acid Soap ◽  
Counter Ion

Proton tunneling in fatty acid/soap crystals?

2003 ◽  
Vol 118 (1) ◽  
pp. 1-3 ◽  
Author(s):  
A. Marco Saitta ◽  
Michael L. Klein
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Soap ◽  
Acid Soap ◽  
Proton Tunneling

scholarly journals Properties of Fatty Acid Soap with Sodium N-Methyltaurine as Counter-ion. II. N-Methyltaurine for Detergent Application.

2002 ◽  
Vol 51 (3) ◽  
pp. 165-173
Author(s):  
Reiji MIYAHARA ◽  
Takahiro AKUTSU ◽  
Kouji ABE ◽  
Kunihiko YOSHIDA ◽  
Yasunari NAKAMA ◽  
...  
Keyword(s):  
Fatty Acid ◽  
Fatty Acid Soap ◽  
Acid Soap ◽  
Counter Ion

scholarly journals Effect of Alkyl Structure (Straight Chain/Branched Chain/Unsaturation) of C18 Fatty Acid Sodium Soap on Skin Barrier Function

2020 ◽  
Vol 10 (12) ◽  
pp. 4310
Author(s):  
Koji Kubota ◽  
Akie Kakishita ◽  
Mana Okasaka ◽  
Yuka Tokunaga ◽  
Sadaki Takata
Keyword(s):  
Fatty Acids ◽  
Fatty Acid ◽  
Barrier Function ◽  
Anionic Surfactants ◽  
Skin Barrier ◽  
Fatty Acid Soap ◽  
Skin Tissue ◽  
Acid Soap ◽  
Skin Barrier Function ◽  
Transmission Index

Anionic surfactants are commonly used as detergents and emulsifiers. However, these compounds are potent skin irritants. In this study, we evaluated the effect of the alkyl structure of anionic surfactants on the skin barrier function using the transmission index (TI) method. The TI method is used to measure the skin penetration rate of drugs. Sodium soaps of C18 fatty acids with different structures were evaluated. Sodium laurate was used as the control. In addition, microscopic observations of the skin tissue treated with different soaps and controls were performed to study the mechanism of skin permeation. Results showed that unsaturated fatty acid soaps exerted the most potent effect on the skin barrier function and saturated fatty acid soaps exerted the least effect; saturated branched fatty acid soap had an intermediate effect. This could be attributed to the differences in the melting points of different fatty acids. In addition, unlike lauric acid soap, C18 fatty acid soap did not cause morphological changes in the skin tissue. Thus, differences in the alkyl structure of fatty acids resulted in differences in the effect of fatty acid soaps on the skin barrier function. The mechanism was presumed to be an effect on intercellular lipids.

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