Objective of this research was to characterize properties of the latent heat storage
biocomposite (LHSBC) as a novel material that can be employed as a latent heat storage
insulation by using biochar. Biochars produced from waste material pine cone, pine
saw dust, and paper mill sludge were vacuum impregnated with a bio-based phase change
material (PCM), coconut oil, to prepare LHSBCs. In particular, this paper analyzed
the chemical stability, latent heat storage performance, thermal conductivity, and
thermal stability of LHSBCs based on results of fourier transform infrared spectroscopy
(FFIR), differential scanning calorimetry (DSC), laser flash method and thermogravimetric
analysis (TGA). As a result, the LHSBCs showed a maximum latent heat storage capacity
of 74.6 J/g and a low thermal conductivity of 0.030 W/mK at the maximum, confirming
that LHSBCs have a high latent heat storage capacity and thermal insulation performance.
With a maximum specific heat of 1.69 J/gK, a high, sensible heat storage was confirmed.
In addition, all LHSBCs were found to be thermally and chemically stable. The LHSBC
could be employed as a material with good thermal insulation performance and heat
storage characteristics. (C) 2019 Elsevier Ltd. All rights reserved.