TY - JOUR
T1 - Nanodiamond/poly (lactic acid) nanocomposites
T2 - Effect of nanodiamond on structure and properties of poly (lactic acid)
AU - Zhao, Yong Qing
AU - Lau, Kin Tak
AU - Kim, Jang Kyo
AU - Xu, Cai Ling
AU - Zhao, Dan Dan
AU - Li, Hu Lin
N1 - Funding Information:
This work was funded by a grant from the Research Grants Council of the Hong Kong SAR, China (PolyU 5198/07E).
PY - 2010/12
Y1 - 2010/12
N2 - Nanodiamond (ND)/poly (lactic acid) (PLA) nanocomposites with potential for biological and biomedical applications were prepared by using melting compound methods. By means of transmission electron microscopy (TEM), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analyses (TGA), Dynamic mechanical analyses (DMA), Differential scanning calorimetry (DSC) and Tensile test, the ND/PLA nanocomposites were investigated, and thus the effect of ND on the structural, thermal and mechanical properties of polymer matrix was demonstrated for the first time. Experimental results showed that the mechanical properties and thermal stability of PLA matrix were significantly improved, as ND was incorporated into the PLA matrix. For example, the storage modulus (E′) of 3 wt% ND/PLA nanocomposites was 0.7 GPa at 130 °C which was 75% higher than that of neat PLA, and the initial thermal decomposition was delayed 10.1 °C for 1 wt% ND/PLA nanocomposites compared with the neat PLA. These improvements could be ascribed to the outstanding physical properties of ND, homogeneous dispersion of ND nanoclusters, unique ND bridge morphology and good adhesion between PLA matrix and ND in the ND/PLA nanocomposites.
AB - Nanodiamond (ND)/poly (lactic acid) (PLA) nanocomposites with potential for biological and biomedical applications were prepared by using melting compound methods. By means of transmission electron microscopy (TEM), Scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), Thermogravimetric analyses (TGA), Dynamic mechanical analyses (DMA), Differential scanning calorimetry (DSC) and Tensile test, the ND/PLA nanocomposites were investigated, and thus the effect of ND on the structural, thermal and mechanical properties of polymer matrix was demonstrated for the first time. Experimental results showed that the mechanical properties and thermal stability of PLA matrix were significantly improved, as ND was incorporated into the PLA matrix. For example, the storage modulus (E′) of 3 wt% ND/PLA nanocomposites was 0.7 GPa at 130 °C which was 75% higher than that of neat PLA, and the initial thermal decomposition was delayed 10.1 °C for 1 wt% ND/PLA nanocomposites compared with the neat PLA. These improvements could be ascribed to the outstanding physical properties of ND, homogeneous dispersion of ND nanoclusters, unique ND bridge morphology and good adhesion between PLA matrix and ND in the ND/PLA nanocomposites.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Mechanical properties
KW - B. Thermal properties
UR - http://www.scopus.com/inward/record.url?scp=78249260918&partnerID=8YFLogxK
U2 - 10.1016/j.compositesb.2010.09.003
DO - 10.1016/j.compositesb.2010.09.003
M3 - Article
AN - SCOPUS:78249260918
SN - 1359-8368
VL - 41
SP - 646
EP - 653
JO - Composites Part B: Engineering
JF - Composites Part B: Engineering
IS - 8
ER -