亚微米二氧化钛基功效性紫外屏蔽复合材料的制备及性能研究

Preparation and properties of submicron titanium dioxide based efficient UV shielding composites

首先制备了一种亚微米花状二氧化钛,依次对其进行无机和有机表面处理后制得TiO2/Al(OH)3/SS复合材料(TAS),最后在TAS表面包覆一种天然防晒剂姜黄素(Cur),得到最终产物TASC复合材料。通过XRD、UV-Vis、TEM、FT-IR、水接触角等技术手段对所得样品进行表征,结果表明:Al(OH)3、SS、Cur均以非晶态和物理吸附的形式包覆于TiO2表面,三者的适宜包覆量分别为8%,8%和6%;防晒指数分析表明:TASC的紫外屏蔽能力远强于市售亚微米TiO2(CR-50),接近市售纳米TiO2(626B)。此外,与TAS相比,TASC复合材料还具有较强的抗氧化性。

In this study,a sub-micron flower-like titanium dioxide was first prepared,followed by inorganic and organic surface treatment to prepare TiO_(2)/Al(OH)_(3)/SS composite(TAS).Finally,the surface of TAS was coated with curcumin(Cur),a natural sunscreen,to obtain the final product-TASC composite.The samples were characterized by XRD,UV-Vis,TEM,FT-IR and water contact angle.The results show that Al(OH)_(3),SS and Cur are all coated on the TiO_(2) surface in the form of amorphous state and physical adsorption,and the suitable coating amounts of the three are 8%,8%and 6%,respectively.The UV shielding ability of TASC is much stronger than that of the commercial submicron TiO_(2)(CR-50)and close to the level of the commercial nano TiO_(2)(626B).In addition,compared with TAS,TASC composite also has strong oxidation resistance.