2016
DOI: 10.1246/bcsj.20160321
|View full text |Cite
|
Sign up to set email alerts
|

Thin Film Properties of Ammonium Sulfonate Ionic Liquids Having a Long Alkyl Chain

Abstract: New well-lubricated ILs including ammonium sulfonate having a long alkyl chain have been developed. The materials based on ammonium sulfonate have a higher ΔpKa between the Brønsted acid and the Brønsted base of the salts and do not decompose even at 300 °C, making them more thermally stable than the perfluoropolyether (PFPE). Therefore, octadecyl ammonium sulfonates have a lower frictional coefficient on the carbon overcoat film even after heat treatment at high temperatures. The ILs are adsorbed on the media… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
3

Citation Types

0
3
0

Year Published

2020
2020
2021
2021

Publication Types

Select...
3

Relationship

2
1

Authors

Journals

citations
Cited by 3 publications
(3 citation statements)
references
References 41 publications
0
3
0
Order By: Relevance
“…We have previously studied protic ionic liquids (PILs) from a different viewpoint ahead of the Ye's work. The objective of our activity was to develop lubricants for magnetic tape [13][14][15][16][17][18][19][20].…”
Section: Introductionmentioning
confidence: 99%
See 1 more Smart Citation
“…We have previously studied protic ionic liquids (PILs) from a different viewpoint ahead of the Ye's work. The objective of our activity was to develop lubricants for magnetic tape [13][14][15][16][17][18][19][20].…”
Section: Introductionmentioning
confidence: 99%
“…Nowadays, this salt type of chemical compound is called IL and the ILs composed of a Brønsted acid and a Brønsted base are categorized as PIL. In order to clarify the role of alkyl chain, we synthesized IL with several different length of alkyl chain (C8, C10, C11, C12, C13, C14, C15, C16, C18) and measured its friction and surface energy as thin film [20]. The friction coefficient decreases with increasing carbon number before leveling off above C14.…”
Section: Introductionmentioning
confidence: 99%
“…When chemical structure of the IL is optimized, the monolayer thickness of the IL compare with that of multidentate PFPE is of great interest. There are several other reports on the use of ILs as lubricants for magnetic disk [16][17][18][19][20][21], the motivation of those studies is applying the ILs in the next generation of recording systems: heat assisted recording system (HAMR) because the thermal stability of ILs are high. Several attractive data seems to be obtained, however basic ultrathin film properties are necessary to use IL in this practrical application, since there are many specification on the current hard disk drive to ensure a relaiable head-disk interface.…”
Section: Introductionmentioning
confidence: 99%