Comparative Study on the Nanocomposites of Cellulose and Alkali Earth Metal Fluorides (MF2, M = Ca, Mg, Sr, Ba) via Microwave-Assisted Method

摘要

The purposes of this study were to investigate the different nanocomposites of cellulose and alkali earth metal fluorides (MF2, M = Ca, Mg, Sr, Ba), which were synthesized via the microwave-assisted method using cellulose solution pretreated with NaOH/urea. In this study, sodium fluoride (NaF) was used as the source of fluoride ion and the alkali earth metal nitrate (Ca(NO3)(2), Mg(NO3)(2), Sr(NO3)(2), and Ba(NO3)(2)) was used as the reaction initiator. The influences of the parameters such as the different cellulose types and different kinds of alkali earth metal fluorides were investigated by X-ray powder diffraction (XRD), Fourier transform infrared spectrometry (FTIR), scanning electron microscopy (SEM), thermogravimetric analysis (TG), and derivative thermogravimetric (DTG). The results demonstrated that the cellulose types played an important role in the recombination of cellulose and alkali earth metal fluorides, and the types of alkali earth metal fluorides also displayed different compound abilities. What's more, cytotoxicity experiments revealed that the alkali earth metal fluorides on the cellulose substrate had nice biocompatibility and could be candidates for the potential applications of biomedical, drug loading and releasing fields.