图为添加不同量纳米二氧化钛粒子所得多孔微球的热重曲线。从图中可知，所得微球的热失重开始于200℃，这应当是由于乙基纤维素在高温下的降解。此外，在350℃与500 ℃的温度范围内，有一个较小的失重，则可能源于残余有机物的分解。根据热重分析所得数据，计算了乙基纤维素多孔微球实际负载纳米二氧化钛的含量。根据计算，随着纳米二氧化钛粒子添加量的增加，所得微球二氧化钛与乙基纤维素质量之比分别为12.7%、25.5%和49.6%，而若是所添加二氧化钛粒子全部负载成功，则二氧化钛与乙基纤维素质量之比分别为12.5%，25.0%和50.0%。考虑到误差的影响，可以基本确定纳米二氧化钛在乙基纤维素微球中的负载率为100%。

The figure shows the thermogravimetric curves of porous microspheres obtained by adding different amounts of nano-sized titanium dioxide particles.  It can be seen from the figure that the thermogravimetry of the obtained microspheres begins at 200℃, which should be due to the degradation of ethyl cellulose at high temperatures.  In addition, in the temperature range of 350 ° C and 500 ° C, there is a small weight loss, which may result from the decomposition of residual organic matter.  Based on the data obtained by thermogravimetric analysis, the content of nano-tio2 loaded on the ethylcellulose porous microspheres was calculated.  According to the calculation, with the increase of the addition of nano-tio2 particles, the mass ratio of titanium dioxide and ethyl cellulose of the obtained microspheres is 12.7%, 25.5% and 49.6%, and if the added titanium dioxide particles are successfully loaded, the mass ratio of titanium dioxide and ethyl cellulose is 12.5%, 25.0% and 50.0%, respectively.  Considering the influence of error, it can be basically determined that the loading rate of nano-titanium dioxide in ethyl cellulose microspheres is 100%.