Lantanida Journal
Vol 8, No 1 (2020)

NANOENKAPSULASI ASAM STEARAT DENGAN MODIFIKASI GRAFENA mG/SA WALL-CORE SEBAGAI KOMPOSIT PERUBAHAN FASA

Saharman Gea (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara)
Vivi Purwandari (Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Sumatera Utara)



Article Info

Publish Date
06 Aug 2020

Abstract

The fabrication of phase-changed composite (PCC) utilized to store thermal energy through encapsulation has been performed by utilizing the stearate acid (SA) and modified graphene (mG) with sentrimoinum bromide (CTAB). The composite was fabricated via latex method, while the liquid SA was able to be encapsulated and stabilized due to the presence of mG. The active phase of SA altered to be a thermal storing site obtained from latent heat, while the mG wall has protective features which can prevent the leakage of SA core during the transition phase. The active phase itself increased the thermal conductivity from 4.93 W/mK to 7.65 W/mK with maximum storing energy for 84.8%. The stable form of mG was measured extremely low for 2 phr with an average particle size of 13.68 nm. Thus, mG wall has excellent thermal stability and effective protection in shielding the SA core which improves the thermal properties of the composite.

Copyrights © 2020






Journal Info

Abbrev

lantanida

Publisher

Subject

Chemical Engineering, Chemistry & Bioengineering Chemistry Education

Description

Lantanida Journal is an, scientific journal open-access containing results research, literature reviews and recent news on science and technology in the areas of educational learning and learning development. This journal is formed from the initiative of Leaders Chemistry departmen, lecturers, ...