Abstract
Polyesters from different 1,ω-dicarboxylic acids HOOC·(CH 2) n · COOH ranging from malonic acid ( n = 1) to hexadecane-1,16-dicarboxylic acid ( n = 16) with diethylene glycol were prepared and evaluated as substrates for gas-liquid chromatography. Several terpenic and non-terpenic compounds were analysed. It was observed that the number of methylene groups in the acid fragment of the polyester has a profound influence on the retention time, on the basis of which an interesting mathematical relationship has been developed. The retention time appears to be a characteristic of the number of methylene groups between the two carboxyl groups and the contribution of a single methylene group to the retention time of a particular compound at a particular temperature has been found to be a constant. This relationship holds good for aliphatic and alicyclic hydrocarbons and only slightly deviates for aromatic hydrocarbons.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
