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首页> 外文期刊>Journal of Applied Polymer Science >Surface organic modification of titanium dioxide fine particles through photo polymerization
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Surface organic modification of titanium dioxide fine particles through photo polymerization

机译：通过光聚合对二氧化钛微粒进行表面有机改性

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摘要

C=C unsaturated groups were chemically inserted onto TiO _2 particles surfaces through chemical reaction of hydroxyl group on the TiO _2 fine particle surface with 2,4-diidocyanatotoluene (TDI) first, and then with 2-hydroxyethyl acrylate (HEA). Finally, TiO _2 fine particles with surface organic modification were made through the free radical copolymerization reaction with n-butyl acrylate (BA) monomer under UV irradiation. The structure and properties of unmodified and modified TiO _2 were studied by FT-IR, XPS, TGA, TEM, lipophilic rates, and adhesion properties tests. The results show that the surface of TiO _2 has been successfully introduced with the organic chains through chemical bonding linkage; the surface lipophilic rates of TiO _2 particles are increased. The dispersion and compatibility of the modified TiO _2 particles in a commercial ink 508C resin greatly improve as compared with that of unmodified TiO _2, and agglomeration of particles obviously reduces. The adhesion strength between the white printing ink made from the modified TiO _2 particles and BOPP is much better than that from the unmodified TiO _2. When the organic rate reached 24.93%, the adhesion strength reaches Grade I.
机译：通过首先使TiO _2细颗粒表面上的羟基与2,4-二氨基氰基甲苯（TDI），然后与丙烯酸2-羟乙酯（HEA）进行化学反应，将C = C不饱和基团化学插入到TiO _2颗粒表面上。最后，通过与丙烯酸正丁酯（BA）单体在紫外线辐射下的自由基共聚反应，制备了具有表面有机改性的TiO _2细颗粒。通过FT-IR，XPS，TGA，TEM，亲脂率和粘附性能测试研究了未改性和改性的TiO _2的结构和性能。结果表明，通过化学键联成功地将TiO _2表面引入了有机链。 TiO _2颗粒的表面亲脂率增加。与未改性的TiO _2相比，改性的TiO _2颗粒在市售油墨508C树脂中的分散性和相容性大大提高，并且颗粒的团聚明显减少。由改性的TiO _2颗粒制成的白色印刷油墨与BOPP的粘合强度比未经改性的TiO _2更好。当有机率达到24.93％时，粘合强度达到I级。

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