Colloids and Surfaces A 538 (2018) 73–78 Contents lists available at ScienceDirect Colloids and Surfaces A journal homepage: www.elsevier.com/locate/colsurfa Eﬀect of inorganic and organic counterions on interfacial properties of oleic acid-based gemini surfactants a b a a,c, c Tadashi Sugahara , Yuichiro Takamatsu , Masaaki Akamatsu , Kenichi Sakai , Masahiko Abe , a,c, Hideki Sakai Department of Pure and Applied Chemistry, Faculty of Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan Miyoshi Oil & Fat Co. Ltd., 4-66-1 Horikiri, Katsushika, Tokyo 124-8510, Japan Research Institute for Science and Technology, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba 278-8510, Japan GR APHICAL A BSTRACT ARTICLE I NFO ABSTRACT Keywords: We studied the eﬀect of counterion species of oleic acid-based gemini surfactants with carboxylate headgroups. Gemini surfactant Adsorption and self-aggregation properties were investigated by static surface tension, pyrene ﬂuorescence, Oleic acid dynamic light scattering and phase diagram measurements. We found that, in the case of inorganic counterions Counterion + + + + (Li ,Na ,K , and Cs ), a decreased ion size leads to a decreased critical micelle concentration (cmc) as well as Surface tension a decreased area per surfactant molecule adsorbed at the
Geoderma – Elsevier
Published: Feb 15, 2019
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.
All for just $49/month
Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly
Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.
Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera