Table 3.

Optimization of Loading Capacity and Encapsulation rate.The Loading Efficiency and Encapsulation Rate of GO-PEG Were Detected by HPLC, and Different Proportions of GO-PEG and OH30 Were Mixed to Obtain Better Loading Efficiency and Encapsulation Rate (Mean ± SD, n =3)

Ratio of OH30 and GO-PEG	Loading Efficiency(%)	Encapsulation Efficiency (%)
0.1mg/ml GO-PEG+0.4mg/ml OH30	55.15±3.30	30.71±3.64
0.1mg/ml GO-PEG+0.6mg/ml OH30	61.69±0.99	26.87±1.15
0.1mg/ml GO-PEG+1mg/ml OH30	69.56±0.93	22.89±0.99
0.1mg/ml GO-PEG+2mg/ml OH30	80.83±1.15	20.47±2.45
0.1mg/ml GO-PEG+2.5mg/ml OH30	79.88±0.11	13.0±0.31

Abbreviations: GO-PEG, PEGylated graphite oxide; OH30, OH-CATH30.