Anhydrous ethanol, ethyl acetate, ChengDu Chron Chemicals Co., Ltd.; ethyl cellulose (intrinsic viscosity 90–110 mPa s; 5% in toluene/isopropanol 80 : 20 (v/v)), Shanghai Aladdin Biochemical Technology Co., Ltd.; uranyl nitrate, Chushengwei Chemical Co., Ltd. All reagents were analytically pure (AR).
Ethyl cellulose (EC) sols were obtained by dissolving a certain amount of EC in a mixed solvent of anhydrous ethanol and ethyl acetate. The EC sols were stirred at room temperature for 12 h in a flask to make the sol homogeneous. The content of anhydrous ethanol in the mixed solvent was 10% (v/v).
Ethyl cellulose (EC) sols were obtained by dissolving a certain amount of EC in a mixed solvent of anhydrous ethanol and ethyl acetate. The EC sols were stirred at room temperature for 12 h in a flask to make the sol homogeneous. The content of anhydrous ethanol in the mixed solvent was 10% (v/v).
