高透明紫外阻隔聚碳酸酯/ZnO纳米复合高分子膜的制备与表征

Fabrication and characterization of highly transparent polycarbonate/ZnO nanocomposite films with novel UV-shielding optical-properties

采用溶液共混法将纳米ZnO颗粒添加到聚碳酸酯(PC)中,制备得到了具有高透明性、高紫外线屏蔽能力的PC/ZnO纳米复合高分子膜。分别使用傅立叶转换红外线光谱(FT-IR)、扫描电子显微镜(SEM)、紫外-可见分光光度计对纳米复合膜的光学性能进行了分析和表征。结果表明当纳米ZnO的添加量为10%(质量分数)时,复合膜的可见光透过率为98%,与未添加纳米ZnO的PC膜一致。与市售隔紫外线PC产品对比,纳米复合膜同时具有较好的透明度和紫外线屏蔽能力,紫外线的阻隔率可达92%。

Highly transparent polycarbonate （PC）/ZnO nanocomposite films with good ultraviolet （UV）-shielding performance have been successfully obtained by a simple solution mixing method using cyclohexanone （CYC） as a co-solvent. The prepared nanoeomposite films were characterized by Fourier transform infrared （FT-IR） spectrosco- py, scanning electron microscopy （SEM）, and UV-visible spectroscopy. The nanocomposite films exhibited good UV-shielding properties （above 92% ） without loss of visible transparency （98%） even when the ZnO content was 10% （mass fraction）. The as-prepared PC/ZnO composite films possess higher transmittance in the visible light region and better UV-shielding properties than a eommercial product.