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Preparation of light-responsive block copolymer modified cellulose nanocrystal@polydopamine particle and its application in fluorinated polyacrylate film |
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| Authors: | Jianhua Zhou Yan Li Sitong Li Mengyuan Zhou Kai Lu Jiarui Yu |
| Affiliation: | 1. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China;2. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China
Sichuan Decision New Material Technology Co., Ltd., Deyang, China Contribution: Investigation (lead);3. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology), Xi'an, China Contribution: Visualization (lead), Writing - review & editing (equal);4. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology), Xi'an, China Contribution: Data curation (equal);5. College of Bioresources Chemical and Materials Engineering, Shaanxi University of Science and Technology, Xi'an, China National Demonstration Center for Experimental Light Chemistry Engineering Education (Shaanxi University of Science and Technology), Xi'an, China Contribution: Writing - review & editing (equal) |
| Abstract: | Light-responsive cellulose nanocrystal@polydopamine (CNC@PDA) modified fluorinated polyacrylate was synthesized by Pickering emulsion polymerization with light-responsive block copolymer modified CNC@PDA as stabilizer. The epoxy groups in poly(acrylic acid-co-acrylamide)-b-poly(glycidyl methacrylate)-b-poly(hexafluorobutyl acrylate-co-coumarin) amphiphilic triblock copolymer reacted with the hydroxyl and amino groups on the surface of CNC@PDA to form the modified CNC@PDA. The successful preparation of modified CNC@PDA was confirmed by means of FT-IR, XRD, TG, UV–Vis, surface tension measurement, and X-ray photoelectron spectroscopy (XPS) techniques. The results showed that the modified CNC@PDA had light-responsive and amphiphilic properties, and could be used as stabilizer to form stable Pickering emulsion. And the influence of modified CNC@PDA dosage on emulsion polymerization and film performance was systematically studied. The latex particle size decreased initially with increasing modified CNC@PDA dosage, from 0.6 to 1.0 wt%, and then increased. The mechanical, self-healing, and water–oil repellent properties of film were enhanced initially with increasing modified CNC@PDA dosage, from 0.6 to 1.0 wt%, and then declined. Atomic force microscope confirmed that the latex film had a rough surface. Moreover, the latex film comprising 1.0 wt% modified CNC@PDA presented not only high tensile strength (4.92 MPa), large elongation at break (657.70%), and superior oil/water repellency but also excellent self-healing property. |
| Keywords: | cellulose nanocrystal fluorinated polyacrylate Pickering emulsion polymerization self-healing performance water and oil proof agent |