Synthesis and Characterization of Surface-Grafted Magnesium Oxide Whiskers with poly(L-lactide)

Abstract:

Firstly, Magnesium oxide (MgO) whiskers were prepared by calcination of magnesium carbonate (MgCO₃₎ whiskers which were obtained by solution method. Then, surface-grafted MgO whiskers with poly (L-lactide) were synthesized by bulk ring-opening polymerization of L-lactide onto the surface of MgO whiskers. The MgO whiskers and surface-grafted MgO whiskers were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), x-ray diffraction (XRD) and fourier transformation infrared (FTIR). Results showed that MgO whiskers diameter in the range of 0.02-0.5μm, the length is between 10-80μm and well dispersed. A new characteristic stretching vibration absorption peak of C=O apppeared in the IR spectrum of the surface-grafted MgO whiskers, which suggested that poly (L-lactide) chains were successfully grafted on the surface of MgO whiskers.

• Periodical: Advanced Materials Research (Volume 820)
• Pages: 41-44
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.820.41
• Online since: September 2013
• Authors: Wei Wen, Bing Hong Luo, Cai Rong Li, Wan Xu, Chang Ren Zhou
• Keywords: MgO Whiskers, Poly (L-lactide) (PLLA), Surface Modification

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