TY  - JOUR
T1  - Role of Intermolecular Force on the Instability of Absorption and Release of Heat in Kapok
Oil
AU - Akhlis Rizza, Muhammad AU - Khaerudin, D. Noorvy AU - Emzain, Zakki Fuadi AU - Monasari, Ratna 
JO  - Journal of Engineering and Applied Sciences
VL  - 15
IS  - 11
SP  - 2478
EP  - 2483
PY  - 2020
DA  - 2001/08/19
SN  - 1816-949x
DO  - jeasci.2020.2478.2483
UR  - https://makhillpublications.co/view-article.php?doi=jeasci.2020.2478.2483
KW  - Kapok oil
KW  -instability
KW  -termogram
KW  -intermolecular force
KW  -phase change
AB  - This study aims to experimentally determine
the role of intermolecular forces on the instability of
absorption and release of heat in Kapok oil. Heat
absorption and release were measured using a Differential
Sanning Calorimeter (DSC). The thermogram shows that
heat absorption and release are unstable. The results
indicate that the during the first cooling process, there is
a shoulder visible in the thermogram which is caused by
a separation between the molecules in the Kapok oil. The
longest molecule has the most energetic Van der Waals
interaction. The Van der Waals interaction exists even
when the vibration of the molecule becomes weak.
Therefore, a long particle attracts another long particle
and a short particle attracts another short particle. The
separation causes the instability of heat absorption and
release.
ER  -