TY - JOUR
T1 - Novel wet-free interfacial affinity modulation of non-polar polymers for imparting efficient heat transfer capability to incompatible polypropylene/graphite nanoplatelet composite
AU - Kim, Minsung
AU - You, Jiwan
AU - Park, Jong Hyuk
AU - Bang, Joona
AU - Lee, Sang-Soo
N1 - Funding Information:
This research was financially supported by the Ministry of Culture, Sports and Tourism (MCST) and the Korea Creative Content Agency (KOCCA) as part of the Culture Technology (CT) Research & Development Program (2R2019020040). M. Kim, J. H. Park and S.-S. Lee also acknowledge the financial support from the 2021 internal project of KIST.
Publisher Copyright:
© 2021 The Korean Society of Industrial and Engineering Chemistry
PY - 2022/3/25
Y1 - 2022/3/25
N2 - In preparing a non-polar polymer composite employing functional fillers, the chemical inertness of non-polar polymer does not easily allow efficient interfacial affinity change. Here, a wet-free interfacial affinity modulation to incompatible polypropylene (PP)/graphite nanoplatelet (GNP) composite was performed with a nitrogen plasma-assisted mechanochemical (PM) treatment. It was surprising that the PP/GNP composite subjected to the PM treatment demonstrated the formation of chemical bonds between PP and GNP and the dramatic improvement of GNP dispersion in PP, resulting in a novel PP composite deploying efficient heat transfer along with mechanical performance comparable to that of neat PP. Due to the interfacial affinity control, the elongation at break of the PM-treated PP/GNP composite with 5 wt% of GNP was improved ten-folds compared to the untreated PP/GNP composite. The thermal conductivity of the PM-treated PP/GNP composite employing 20 wt% of GNP reached ca. 21 W/mK, whereas the untreated PP/GNP composite containing comparable amount of GNP exhibited 7 W/mK. Based on the findings, it can be noted that a solvent-free plasma-assisted mechanochemical treatment could be meaningful in developing a novel composite capable of efficient mechanical load transfer and heat transfer with non-polar polymers known to be poor at chemical reaction.
AB - In preparing a non-polar polymer composite employing functional fillers, the chemical inertness of non-polar polymer does not easily allow efficient interfacial affinity change. Here, a wet-free interfacial affinity modulation to incompatible polypropylene (PP)/graphite nanoplatelet (GNP) composite was performed with a nitrogen plasma-assisted mechanochemical (PM) treatment. It was surprising that the PP/GNP composite subjected to the PM treatment demonstrated the formation of chemical bonds between PP and GNP and the dramatic improvement of GNP dispersion in PP, resulting in a novel PP composite deploying efficient heat transfer along with mechanical performance comparable to that of neat PP. Due to the interfacial affinity control, the elongation at break of the PM-treated PP/GNP composite with 5 wt% of GNP was improved ten-folds compared to the untreated PP/GNP composite. The thermal conductivity of the PM-treated PP/GNP composite employing 20 wt% of GNP reached ca. 21 W/mK, whereas the untreated PP/GNP composite containing comparable amount of GNP exhibited 7 W/mK. Based on the findings, it can be noted that a solvent-free plasma-assisted mechanochemical treatment could be meaningful in developing a novel composite capable of efficient mechanical load transfer and heat transfer with non-polar polymers known to be poor at chemical reaction.
KW - Graphite nanoplatelet
KW - Heat transfer composite
KW - Interfacial affinity modulation
KW - Non-polar polymer
KW - Plasma-assisted mechanochemistry
UR - http://www.scopus.com/inward/record.url?scp=85121932196&partnerID=8YFLogxK
U2 - 10.1016/j.jiec.2021.12.003
DO - 10.1016/j.jiec.2021.12.003
M3 - Article
AN - SCOPUS:85121932196
SN - 1226-086X
VL - 107
SP - 346
EP - 353
JO - Journal of Industrial and Engineering Chemistry
JF - Journal of Industrial and Engineering Chemistry
ER -