Presentation Open Access

Short-term and long-term volatilities of films from polyol ester and ether-based oils of various molecular weights

Asadauskas, Svajus Joseph; Bražinskienė, Dalia; Grigucevičienė, Asta

Editor(s)
Padgurskas, Juozas

Viscosity and volatility parameters are very important for many technical applications, such as adhesives, lubricants or coatings. Often low viscosity and low volatility is desirable and various esters of oils from industrial crops are more appropriate than hydrocarbons. Short term evaporation can be quantified by thermogravimetric analysis (TGA), standard protocol of NOACK volatility or even flash point. But standardized tests of prolonged degradation do not address vaporization. In this study short and long-term volatilities of esters from industrial crops were compared to hydrocarbons and ethers using thin film methodologies. It turned out that mostly components of low molecular weight are responsible for NOACK results. Long term volatility is more dependent on decomposition reactions, which take place due to hydrolysis, oxidation and other degradation processes. Double bonds and ether linkages lead to higher long-term volatile emissions. Decomposition trends must be considered when selecting oils for applications, where low volatility and migration is important.

It should become available also on http://greentribology.asu.lt/index.php/Balttrib/issue/archive
Files (436.6 kB)
Name Size
Balttrib SJA NOACK 2019.pdf
md5:476109d5c260dad3a9380cb13e6485ae
436.6 kB Download
33
37
views
downloads
All versions This version
Views 3333
Downloads 3737
Data volume 16.2 MB16.2 MB
Unique views 3333
Unique downloads 3737

Share

Cite as