Ethyl acetate, ethyl hexanoate, ethyl octanoate, 2-methyl1-butanol, 3-methyl-1-butanol, 1-hexanol
, 1-octanol, phenylethyl alcohol, and hexanoic acid were positively identified by comparing the spectra and chromatographic peak RIs of samples and analytical standards.
20]) and authentic compounds including acetaldehyde, trans-2-decenal, 2-methylpropanal, 2-methylbutanal, 3-methylbutanal, pentanal, hexanal, heptanal, (E), 2-heptenal, 2-methylthiazole, benzaldehyde, octanal, benzeneacetaldehyde, nonanal, decanal, (E,E), 2,4-decadienal, ethanol, 1-propanol, 2-furanmethanol, 1-hexanol
, 1-octen-3-ol, fufural, tetradecanal, 1-octanol, acetone, 2-propanone, 2,3-butanedione, 2-butanone, 2-heptanone, 3-octanone, dimethyldisulfide, pyrazine, methylpyrazine, 2,3-dimethylpyrazine etc.
To achieve this, the DOWANOL [TM] PnBGE and DOWANOL DPnP GE co-solvents present in the initial microemulsion were replaced with 1-butanol and 1-hexanol
, which have lower boiling points, faster evaporation rates, and lower solubility in acrylic polymers.
The alkyl esters synthesis was evaluated as function of type of solvents used (n-hexane or t-butanol), type of alcohol used (methanol, 1-butanol, 1-hexanol
, 1-octanol or ethane-1,2-diol (ethylene glycol), temperature (30, 40 and 50 [degrees]C), alcohol/RO molar ratio (1:4, unless specified otherwise) and in respect to stepwise addition of alcohol (single addition or two or three consecutive additions at different times), (Bernardes et al.