Double in-situ synthesis of polyacrylate/nano-TiO2 composite latex |
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| Affiliation: | 1. College of Resources and Environment, Shaanxi University of Science & Technology, Xi’an 710021, Shaanxi, China;2. Shaanxi Research Institute of Agricultural Products Processing Technology, Xi’an 710021, Shaanxi, China;1. Hebei Key Laboratory of Forensic Medicine, Department of Forensic Medicine, Hebei Medical University, PR China;2. Institute of Forensic Sciences, Soochow University, Suzhou, Jiangsu, PR China;3. Department of Forensic Medicine, Wenzhou Medical University, Wenzhou, Zhejiang, PR China;4. Institute of Forensic Science, Wenzhou Medical University, Wenzhou, Zhejiang, PR China;1. Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran;2. Nanotechnology and Advanced Materials Institute, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran;3. Center of Excellence in Sensors and Green Chemistry, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran;1. Division of Cardiac Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland;2. Division of Pulmonary and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland;3. Division of Thoracic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland;4. Department of Cardiac Surgery, Vanderbilt University School of Medicine, Nashville, Tennessee;1. Department of Cardiology, Institute of Cardiovascular Research, General Hospital of Shenyang Military Region, Shenyang 110016, China;2. Center for Translational Medicine, Temple University School of Medicine, Philadelphia, PA 19140, USA |
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| Abstract: | Polyacrylate/nano-TiO2 composite latex was prepared via double in-situ polymerization using acrylamide (AM), vinyl acetate (VAc), butyl acrylate (BA) and methyl methacrylate (MMA) as monomers, tetrabutyl titanate (Ti(OBu)4) as precursor of TiO2. The morphology, structure and distribution of composite latex were characterized by Transmission Electron Microscope (TEM), Fourier Transform Infrared Spectroscopy (FTIR), Dynamic Light Scattering (DLS) and X-Ray Diffraction (XRD). The thermal stability, anti-yellowing and antibacterial properties of composite latex were also investigated. The results showed that nano-TiO2 consisted in polyacrylate latex and it was located on the surface of latex particles. The average particle size of polyacrylate/nano-TiO2 composite latex was 156.6 nm, which was bigger than that of pure polyacrylate (125.1 nm). The introduction of nano-TiO2 improved the thermal stability, anti-yellowing and antibacterial properties of the latex film. At last, the polyacrylate/nano-TiO2 composite latex was applied in leather finishing. Compared with polyacrylate latex, the properties of the leather finished by polyacrylate/nano-TiO2 composite latex were enhanced: water vapor permeability increased by 58% and water uptake decreased by 3.52%. |
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| Keywords: | Polyacrylate Composite latex Double in-situ polymerization |
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