Abstract:
Oxygen absorption studies of blends of oils of melon seed (~SD)rubber seed (RSO) and linseed (LSD) have been
carried out at room temperature i n order to optimise
the drying performance of MSO and RSO. A manometer
was used to measure O2 absorbed. The set-to-touch
time ( STTT) of o i l o r o i l blend was measured a f t e r
3 hours of O2 absorption and 18 hours of ageing.
Addition of LSO to MSO reduced its STTT from
12.25 hours to 4.0 hours a t 50/50; this compares
favourably with the STTT of 3.0 hours f o r pure LSD.
Also, addition of RSO to MSO reduced its STTT to 7.5
hours a t 50/50. However, addition of LSO to RSO
reduced its STTT from 6.8 to 6.7 hours a t 50/50,
i n s p i t e of reasonable increase i n O2 absorption.
T h i s poor performance of RSO/LSO blends in STTT is
probably due to evolution of excess water during drying.
