Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
Ultrason Sonochem. 2018 Mar;41:361-374. doi: 10.1016/j.ultsonch.2017.09.052. Epub 2017 Sep 30.
In the present project in order to prevent agglomeration and better dispersion of TiO nanoparticles (NPs) in the poly(vinyl chloride) (PVC) matrix, initially, the surface of TiO NPs was covered by bovine serum albumin protein (BSA) via sonication method. Then, the TiO-BSA powders were embedded into the PVC matrix using ultrasonic irradiations. With mechanical and magnetic stirring homogenous mixture was not obtained. So sonication process was very essential and vital. Physical, chemical and structural properties of the samples were investigated with various tools. Morphology studies showed the well distribution of spherical TiO NPs in the PVC matrix. TGA analysis showed that nanocomposites (NCs) have higher thermal stability than the pristine polymer. The photocatalytic activity tests by destroying the methylene blue dye on the pristine TiO NPs, TiO-BSA NPs and PVC/TiO-BSA NC 6 wt% were examined. The results showed that the photocatalytic activity of TiO NPs was reduced in the presence of BSA and PVC. It can be concluded that the TiO-BSA NPs and PVC/TiO-BSA NC 6 wt% have UV shielding properties and can protect film from degradation by UV.
在本项目中，为了防止 TiO 纳米粒子（NPs）在聚氯乙烯（PVC）基体中的团聚和更好的分散，首先通过超声法将 TiO NPs 的表面用牛血清白蛋白（BSA）覆盖。然后，通过超声波辐照将 TiO-BSA 粉末嵌入到 PVC 基体中。通过机械和磁力搅拌无法获得均匀的混合物。因此，超声处理非常重要。使用各种工具研究了样品的物理、化学和结构性质。形貌研究表明，球形 TiO NPs 在 PVC 基体中分布良好。TGA 分析表明，纳米复合材料（NCs）比原始聚合物具有更高的热稳定性。通过破坏原始 TiO NPs、TiO-BSA NPs 和 PVC/TiO-BSA NC 6wt%上的亚甲基蓝染料来测试光催化活性。结果表明，BSA 和 PVC 的存在降低了 TiO NPs 的光催化活性。可以得出结论，TiO-BSA NPs 和 PVC/TiO-BSA NC 6wt% 具有紫外线屏蔽性能，可以保护薄膜免受紫外线降解。
