TY - JOUR
T1 - High-performance polyketone nanocomposites achieved via plasma-assisted mechanochemistry
AU - You, J.
AU - Choi, Han Hyeong
AU - Kim, Tae Ann
AU - Park, Min
AU - Ha, Jeong Sook
AU - Lee, Sang Soo
AU - Park, Jong Hyuk
N1 - Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Trade, Industry and Energy , Republic of Korea. We also acknowledge the financial support from a Korea Institute of Science and Technology internal project. S.-S. Lee appreciates the research grant from the KU- KIST Graduate School .
Funding Information:
This research was supported by a grant from the Fundamental R&D Program for Technology of World Premier Materials funded by the Ministry of Trade, Industry and Energy, Republic of Korea. We also acknowledge the financial support from a Korea Institute of Science and Technology internal project. S.-S. Lee appreciates the research grant from the KU-KIST Graduate School.
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/10/20
Y1 - 2019/10/20
N2 - Polyketone (PK) is an engineering plastic with excellent impact strength, chemical resistance, barrier properties, and flame retardancy. However, the development of PK nanocomposites with further improved properties obtained via compounding is challenging due to the poor compatibility between PK and nanofillers. Also, since PK is not soluble in common organic solvents, it is difficult to enhance the affinity between components by applying wet chemistry processes widely used to make other composites. Herein, we report an effective solution to improve the compatibility of PK and nanofillers via a completely dry process. The plasma-assisted mechanochemistry (PMC) process can form chemical bonds between polymers and nanofillers, thereby promoting the dispersion of the nanofillers in polymer composites. PK was compounded with graphite nanoplatelets (GNPs) using the PMC process, and the structure and properties of the composites were investigated. The composites displayed greatly improved mechanical and gas barrier properties, and thermal conductivity; compared with conventionally prepared composites having the same GNP content (10 wt%), the composites prepared via the PMC process had 9.7 times higher elongation at break (112.1%), 2.2 times higher impact strength (89.2 J/m), 2.2 times better barrier performance (0.9 g/m2·day), and 2.5 times higher thermal conductivity (1.6 and 13.9 W/mK in the through-plane and in-plane directions). This approach is an innovative route to high-performance polymer nanocomposites, even those constructed from insoluble and incompatible polymers such as PK.
AB - Polyketone (PK) is an engineering plastic with excellent impact strength, chemical resistance, barrier properties, and flame retardancy. However, the development of PK nanocomposites with further improved properties obtained via compounding is challenging due to the poor compatibility between PK and nanofillers. Also, since PK is not soluble in common organic solvents, it is difficult to enhance the affinity between components by applying wet chemistry processes widely used to make other composites. Herein, we report an effective solution to improve the compatibility of PK and nanofillers via a completely dry process. The plasma-assisted mechanochemistry (PMC) process can form chemical bonds between polymers and nanofillers, thereby promoting the dispersion of the nanofillers in polymer composites. PK was compounded with graphite nanoplatelets (GNPs) using the PMC process, and the structure and properties of the composites were investigated. The composites displayed greatly improved mechanical and gas barrier properties, and thermal conductivity; compared with conventionally prepared composites having the same GNP content (10 wt%), the composites prepared via the PMC process had 9.7 times higher elongation at break (112.1%), 2.2 times higher impact strength (89.2 J/m), 2.2 times better barrier performance (0.9 g/m2·day), and 2.5 times higher thermal conductivity (1.6 and 13.9 W/mK in the through-plane and in-plane directions). This approach is an innovative route to high-performance polymer nanocomposites, even those constructed from insoluble and incompatible polymers such as PK.
KW - Functionalities
KW - Interfacial affinity
KW - Nanocomposites
KW - Plasma-assisted mechanochemistry
KW - Polyketone
UR - http://www.scopus.com/inward/record.url?scp=85071875700&partnerID=8YFLogxK
U2 - 10.1016/j.compscitech.2019.107800
DO - 10.1016/j.compscitech.2019.107800
M3 - Article
AN - SCOPUS:85071875700
SN - 0266-3538
VL - 183
JO - Composites Science and Technology
JF - Composites Science and Technology
M1 - 107800
ER -