Cooling Patch From Hibiscus Rosa Sinensis Leaves Extract

Benedict Baski, Jatim (2018) Cooling Patch From Hibiscus Rosa Sinensis Leaves Extract. [Final Year Project Report] (Unpublished)

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Abstract

Cooling patch has been used for decades to lower down body temperature during fever. Malaysians on the other hand rely more on natural and organic approach by using hibiscus leaves, specifically its extract from ground leaves. The current cooling patch in the Malaysian market are of chemical composition and may result in side effects especially among children. In this paper, research was made to determine whether the extract from hibiscus rosa sinensis leaves were able to produce a new type of cooling patch and its density and thermal conductivity is compared to the available cooling patch in the Malaysian market; “KoolFever”. The most crucial component in the cooling patch is the hydrogel. In this research, the hydrogel is fabricated from extract of rosa sinensis leaves, gelatin, glycerin and water. The hydrogels are also fabricated with different weight of rosa sinensis (10g-50g). The hydrogels are then tested for its thermal conductivity by using the PA Hiton H112A Linar Heat Conduction Unit. The thermal conductivity of all the rosa sinensis leaves hydrogels are compared with that of a pure gelatin-glycerin and “KoolFever” hydrogel. The density of all hydrogels’ sample are also being measured. It is found out that the amount of rosa sinensis leaves can in fact enhance the thermal conductivity of the hydrogels. All the data obtained are recorded and the surface characterization of the hydrogels are being done using the microscope of the Shimadzu HMV-G21 Series Micro Hardness Tester with a 10x objective lens.

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