Waterborne Acrylic/CeO2 Nanocomposites for UV Blocking Clear Coats

Miren Aguirre, M. Paulis, J. R. Leiza
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引用次数: 1

Abstract

The encapsulation of inorganic nanoparticles into polymer particles opens the door to countless applications taking advantage of the properties of both phases. In this chapter the UV absorbing capacity of CeO 2 nanoparticles and the film forming capacity of acrylic polymers are combined. A synthetic route to produce waterborne acrylic/CeO 2 hybrid nanocomposites for UV absorbing coatings applications is presented. This strategy leads to encapsulated morphology of the CeO 2 nanoparticles into the polymer particles and therefore to the lack of agglomeration during film formation. A mathematical model developed for inorganic/organic hybrid systems is able to explain the morphology evolution from the initial monomer droplet to the polymer particles. The films cast from these latexes are transparent and show excellent UV absorption that increases with the amount of cerium oxide nanoparticles in the hybrid latex. Finally, the photoactivity behavior that the CeO 2 nanoparticles may have on the polymeric matrix is studied, discarding addi- tional effects on the acrylic polymer matrix.
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防紫外线透明涂层用水性丙烯酸/CeO2纳米复合材料
将无机纳米颗粒封装到聚合物颗粒中,为利用这两种相的特性的无数应用打开了大门。本章将ceo2纳米粒子的紫外吸收能力与丙烯酸聚合物的成膜能力相结合。提出了一种用于紫外吸收涂料的水性丙烯酸/ ceo2杂化纳米复合材料的合成路线。这种策略导致ceo2纳米颗粒的封装形态进入聚合物颗粒,因此在成膜过程中缺乏团聚。为无机/有机杂化体系建立的数学模型能够解释从初始单体液滴到聚合物颗粒的形态演变。由这些乳胶制成的薄膜是透明的,并表现出优异的紫外线吸收能力,这种吸收能力随着混合乳胶中氧化铈纳米颗粒的量的增加而增加。最后,研究了ceo2纳米颗粒在聚合物基体上的光活性行为,排除了对丙烯酸聚合物基体的附加效应。
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