Journal
POLYMERS
Volume 12, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/polym12050997
Keywords
polymer-matrix composites; carbon nanotubes; micro-mechanics
Categories
Funding
- Fundamental R&D Program for Technology of World Premier Materials - Ministry of Trade, Industry, and Energy, Republic of Korea
- Korea Institute of Science and Technology
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Education [2017R1C1B5077037]
- Ministry of Trade, Industry and Energy (MOTIE, Korea) under Industrial Technology Innovation Program [10082586]
- Korea Evaluation Institute of Industrial Technology (KEIT) [10082586] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2017R1C1B5077037] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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To induce uniform dispersion and excellent interfacial properties, we adopted a strategy of combining both polyamide 6 (PA6) grafting for multi-walled carbon nanotubes (MWCNTs) and reactive extrusion of PA6 matrix, based on anionic ring-opening polymerization of epsilon -caprolactam (CL). Compared to -COOH and -NCO treatments of MWCNTs, enhanced MWCNT dispersion and tensile properties of the composites were achieved using the applied strategy, and the tensile strength and modulus of the PA6-grafted MWCNT-filled PA6 composites were 5.3% and 20.5% higher than those of the purified MWCNT-filled PA6 composites, respectively. In addition, they were almost similar to the theoretical ones calculated by the modified Mori-Tanaka method (MTM) assuming a perfect interface, indicating that the tensile properties of MWCNT-filled PA6 composites can be optimized by PA6 grafting and reactive extrusion based on the anionic ring-opening polymerization of CL due to uniform MWCNT dispersion and excellent interfacial property.
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