Music Makers of Today

Cox, David V.; Young, Percy M.

doi:10.2307/937627

The Musical Times

1959

DOI: 10.2307/937627

|View full text |Cite

Music Makers of Today

David V. Cox¹,

Percy M. Young²

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

1994

Publication Types

Select...

Article1

Relationship

Self Cite0

Independent1

Authors

Journals

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This leads to reduced detergency of formulations that contain anionics as the sole or main active ingredient. Interaction of calcium ions with anionic surfactants, such as linear alkyl benzene sulfonate (LAS), alpha olefin sulfonate (AOS) and soap, has been studied extensively (1)(2)(3)(4)(5)(6)(7)(8). Such surfactants have different calcium tolerance levels.…”

mentioning

confidence: 99%

Precipitation of anionic surfactants in the presence of sodium oleate and calcium ions

Das¹,

Nayyar²,

Bhirud³

et al. 1994

J Americ Oil Chem Soc

View full text Add to dashboard Cite

Precipitation of anionic surfactants, linear alkylbenzene sulfonate (LAS) and alpha olefin sulfonate (AOS), by calcium ions was studied in the presence of sodium oleate. Lather stability was determined by the Ross-Miles method, precipitation was followed by measuring the optical density (OD), and equilibrium surface tension (EST) and Fourier transform infrared (FTIR) spectroscopy were used to characterize the nature of the precipitate formed. For the 5 mM LAS~}.7 mM oleate system, lather was unstable, and the OD was high in the 2-5~ region of calcium hardness, while at higher calcium hardness levels, lather was stable and the turbidity of solutions decreased. On the other hand, in the 5 mM AOS-0.7 mM oleate system, lather was unstable throughout the calcium hardness region studied (0-20~ Also, the turbidity buildup was much higher in the AOS system than in the LAS system. Analysis of the precipitates formed in these systems by FTIR spectroscopy indicated that the precipitate from the AOS system had an additional band at 1190 cm -1, corresponding to the sulfonate group. These results, together with the EST data, confirm that the precipitate formed in the LAS system between 2-5~ calcium is calcium oleate, and that formed in the AOS system is likely to be calcium (AOS) oleate. It is tempting to hypothesize that the similarity of AOS and oleate in chainlength could be responsible for the coprecipitation of AOS and oleate with calcium, whereas LAS, which has a larger headgroup with a benzene ring and two smaller chains (average length is C8) is unlikely to precipitate with the oleate.

show abstract

mentioning

confidence: 99%

Precipitation of anionic surfactants in the presence of sodium oleate and calcium ions

Das¹,

Nayyar²,

Bhirud³

et al. 1994

J Americ Oil Chem Soc

View full text Add to dashboard Cite

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

hi@scite.ai

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Music Makers of Today

Cited by 1 publication

References 0 publications

Precipitation of anionic surfactants in the presence of sodium oleate and calcium ions

Precipitation of anionic surfactants in the presence of sodium oleate and calcium ions

Contact Info

Product

Resources

About