Enhanced thermal conductivity of poly(L-lactide) composites with synergistic effect of aluminum nitride and modified multi-walled carbon nanotubes. Issue 10 (2nd October 2016)

• Record Type: Journal Article
• Authors: Du, Fei-Peng; Li, Jing-Jing; Fu, Ping; Wu, Yan-Guang; Liao, Gui-Ying; Zhang, Yun-Fei; Luo, Shuai
• Is Part Of: Fullerenes, nanotubes and carbon nanostructures. Volume 24:Issue 10(2016)
• Page Start: 667
• Page End: 673
• Publication Date: 2016-10-02
• Subjects: Poly(L-lactide) -- Multi-walled carbon nanotubes -- Aluminum nitride -- Nanocomposites -- Thermal conductivity; Fullerenes -- Periodicals; Nanotubes -- Periodicals; Nanostructures -- Periodicals; 546.6812
• DOI: 10.1080/1536383X.2016.1224236
• Languages: English
• ISSNs: 1536-383X

Abstract

ABSTRACT: Poly (ethylene glycol)-grafted multi-walled carbon nanotubes (PEG-MWNTs) were prepared and added into poly(L-lactide) (PLLA)/aluminum nitride (AlN) composites to obtain PLLA/AlN/PEG-MWNTs nanocomposites. Microstructure and thermal conductivity of the composites were investigated on the basis of the influence of PEG-MWNTs incorporated. The results showed that PEG-MWNTs were well-dispersed in the PLLA matrix and had strong interfacial adhesion with the matrix. The addition of PEG-MWNTs improved the thermal conductivity of PLLA/AlN composites. When 3 wt.% of PEG-MWNTs and 50 wt.% of AlN were both added into the PLLA matrix, the thermal conductivity reached 0.7734 W/mK with enhancement almost by 400% as compared to a neat PLLA. However, the thermal conductivity is 0.3401 W/mK for the PLLA composite with 3 wt.% of PEG-MWNTs and 0.4286 W/mK for the one with 50 wt.% of AlN. The synergistic effect of aggregated AlN particles and well-dispersed MWNTs could form efficient thermal conductive paths for improving the thermal conductivity of PLLA composites greatly.