Status : Verified
| Personal Name | De Silos, Paolo Yves L. |
|---|---|
| Resource Title | Production and characterization of sol-gel processed microencapsulated lauric acid-based phase change material from treated waste coconut oil |
| Date Issued | December 2019 |
| Abstract | The study dealt with the production and characterization of microencapsulated lauric acid from treated waste coconut oil. The treatment of the waste coconut oil included filtration, water removal, acid-catalyzed esterification, and alkali-catalyzed transesterification. For the extraction of lauric acid, the method of Ezigbo & Mbaegbu which used sodium hydroxide was applied. The extracted lauric acid was encapsulated using Sol-Gel process. In the preparation of the mPCM, the effect of drying time and drying temperature on the product weight, diameter, encapsulation ratio, and latent heat of melting was determined. For the characterization, thermal properties were determined using Differential Scanning Calorimetry (DSC), presence of possible functional groups were identified using Fourier Transform Infrared (FTIR) Spectroscopy, and the morphology were investigated using Scanning Electron Microscopy (SEM). In FTIR, a greater detection of lauric acid may be inferred from the higher transmittance. Likewise, a lower detection of lauric acid in the microencapsulated PCM may be attributed to the ineffective encapsulation which may result to leakage. The peaks for the functional groups of lauric acid and silicate were found. On the other hand, a faster drying with high temperature result to a high yield. Among the lauric acid sources, the one from technical grade lauric acid obtained the highest due to purity. In the DSC, a fast drying with high temperature resulted to a low enthalpy. Likewise, at constant drying time, increasing the drying temperature resulted to an increased in latent heat of melting and a less steep melting temperature. In addition, in using SEM it was seen that mPCM produced from low temperature and slower drying condition resulted to longest diameter due to longer time for agglomeration. The significance of the drying time and drying temperature in the product weight, diameter, and encapsulation ratio was studied. It was seen that the drying time is sig |
| Degree Course | Master of Science in Energy Engineering |
| Language | English |
| Keyword | lauric acid; phase change material; coconut oil; sol-gel; waste-to-energy |
| Material Type | Thesis/Dissertation |
Preliminary Pages
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Category : I - Has patentable or registrable invention of creation.
Access Permission : Limited Access