First, I mixed Hydroxypropyl Methylcellulose with DI-Water till homogeneous, then I poured KOH solution into the Hydroxypropyl Methylcellulose mixing and heated to 60 - 65 degrees Celcius.
The fatty acid was heated to 65 - 70 degrees Celcius to liquid and poured into the Hydroxypropyl Methylcellulose - KOH mixing (main tank), btw the temperature of the main tank after putting fatty acid increased to 8 - 15 degrees Celcius. Is the increase possible from the fatty acid solution or the reaction of fatty acid and KOH solution? How to control the temperature main tank around 70 - 75 degrees Celcius?
This is due to chemical reaction between fatty acid and KOH The process is known as sponification
Hello,
The temperature increase in the main tank after adding a fatty acid solution is likely due to the heat released by the saponification reaction between the fatty acid and KOH solution. This exothermic reaction produces soap and glycerol. To control the temperature around 70-75 degrees Celsius, use a cooling jacket or heat exchanger to circulate cool water. Control the rate of addition by adding the fatty acid solution slowly and in small increments to prevent temperature rise too quickly. Monitor the temperature closely to ensure it stays within the desired range. Intermolecular transesterification (interesterification) can occur when a mixture of different fatty acids and/or triglycerides is heated in the presence of a catalyst. However, without knowing the specific details and materials used, it is difficult to determine if interesterification will occur in the process.
- Badges
- Science topic