A core-shell composite pigment with rutile TiO_(2) intensification for UV inhibition

作     者：Xiao Lv Baowei Yan Yuanyuan Shao Haiping Zhang Hui Zhang Jesse Zhu Xiao Lv;Baowei Yana;Yuanyuan Shao;Haiping Zhang;Hui Zhang;Jesse Zhu

作者机构：Cllaborative Innovation Center of Chemical Science and Engineering(Tianjin)School of Chemical Engineering and TechnologyTionjin UniversityTianjin 300350China Department of Chemical and Biochemical Engineering.Western UniversiyOntario N6A 589Canada 

出 版 物：《Particuology》 (颗粒学报（英文版）)

年 卷 期：2022年第20卷第8期

页      面：18-26页

核心收录：

学科分类：08[工学] 0817[工学-化学工程与技术] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：the Natural Sciences and Engineering Research Council of Canada(NSERC) Discovery Grant RGPIN-2018-06256 for supporting this work. 

主　　题：Sol-gel RutileTiO_(2) Organic pigment Core-shell UV resistance Powder coating 

摘      要：Organic pigments generlly have bright colors but poor ultraviolet(UV)resistance.To improve the UV for UVinhibition is proposed by afacile sol-gel method inthis work.Acore-shellstructure,witha homo resistance and extend the applications,a core-shell composite pigment with rutile Tio intensification geneous sol-gel TiO_(2) shell containing additional nanosized rutile TiO2 particles and with the pigment as the core,was established taking advantage of UV resistance of TiO2 and binding ability of sol-gel.While the sol-gel TiO2 shell alone has already shown obvious ultraviolet shielding effect,as tested over different sol-gel aging times and Tio2 loadings,the UV resistance of the fluorescent pigments was further enhanced by binding the nanosized rutile TiO2 in the sol-gel shell At a sol-gel TiO2 to rutile TiO2 ratio of 2:1,the UV exposure time is extended about eight times compared with that of the original pigment and twice as that of the modifed pigment with pure sol-gel TiO2 for the same color change.Therefore,the novel core-shell composite pigment intensified with nanosized rutile Tio2 particles is proved to be effcient in improving the uV resistance of organic pigments.