Chobpattana Varistha, Khemthong Nopparat, Ngok-Ngam Warawut, Leelawattanachai Jeerapond, Sodsai Tippawan, Kumnorkaew Pisist, Muangnapoh Tanyakorn, Muangnapoh Kullachate
Department of Materials and Metallurgical Engineering, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand.
National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani 12120, Thailand.
ACS Omega. 2021 Oct 20;6(43):28671-28677. doi: 10.1021/acsomega.1c03333. eCollection 2021 Nov 2.
This research studies the physical, superhydrophobic, and optical properties of functionalized silica-coated copper phthalocyanine (CuPc) pigments. The silica coating was confirmed by the size increase and the atomic ratio of silicon and copper of the coated pigments. Under optimal conditions, the green and blue shades of the pigments were enhanced as indicated by the increase in solar reflectance at 450-540 nm for the CuPc green and 380-520 nm for the CuPc blue. The total near-infrared (NIR) reflectance of the CuPc green and blue also increases by 10.6 and 11.5% compared to the uncoated pigments, respectively. The functionalized silica layer also adds a superhydrophobic property to the pigments. The contact angles of the functionalized pigments with water and oil are 154.4 and 54.3° for the CuPc green pigment and 142.9 and 78.1° for the CuPc blue pigment, respectively. The improved optical and hydrophobic properties make the pigment suitable for outdoor applications as an advanced protection layer to slow down material degradations from heat and humidity.
本研究考察了功能化二氧化硅包覆酞菁铜（CuPc）颜料的物理、超疏水和光学性能。通过包覆颜料的尺寸增大以及硅和铜的原子比证实了二氧化硅涂层的存在。在最佳条件下，颜料的绿色和蓝色调得到增强，如对于酞菁铜绿色颜料，在450 - 540 nm处的太阳反射率增加；对于酞菁铜蓝色颜料，在380 - 520 nm处的太阳反射率增加。与未包覆的颜料相比，酞菁铜绿色和蓝色颜料的总近红外（NIR）反射率也分别增加了10.6%和11.5%。功能化二氧化硅层还赋予了颜料超疏水性能。对于酞菁铜绿色颜料，功能化颜料与水和油的接触角分别为154.4°和54.3°；对于酞菁铜蓝色颜料，与水和油的接触角分别为142.9°和78.1°。光学和疏水性能的改善使得该颜料适合作为一种先进的保护层用于户外应用，以减缓材料因热和湿度导致的降解。
