Preparation and characterization of modified self-crosslinking fluorocarbon acrylate latex
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ORIGINAL PAPER
Preparation and characterization of modified self‑crosslinking fluorocarbon acrylate latex Tantan Shao1 · Yilu Gong1 · Xiaolong Chen1 · Lijun Chen1 Received: 12 June 2020 / Accepted: 9 September 2020 © Institute of Chemistry, Slovak Academy of Sciences 2020
Abstract The modified self-crosslinking fluorocarbon acrylate (MSFA) latex has been successfully synthesized via semi-continuous seeded emulsion polymerization. Methyl methylacrylate (MMA), butyl acrylate (BA), dodecafluoroheptyl methacrylate (DFMA), and hydroxypropyl methacrylate (HPMA) were chosen as main monomers, vinyl triethoxysilane (VTES), and benzyl methacrylate (BZMA) served as functional monomers. Latex was emulsified by mixed emulsifier containing nonionic surfactant alcohol ether glycoside (AEG1000) and anionic surfactant fatty alcohol polyoxyethylene ether sulfate (AES), and the reaction process was initiated by potassium persulfate (KPS). The optimal conditions were studied and obtained. The results indicated that the monomer conversion was up to 99.36%, and the coagulation was lowered to 0.60% under the optimal conditions. At the same time, the outward appearance of resultant latex presented blue white which confirmed the latex was a successful preparation. The latex was tested through Fourier-transform infrared spectroscopy (FTIR). The mechanical stability and chemical stability of latex were measured. Thermogravimeter (TGA) results demonstrated that the introduction of functional monomers has extensively augmented the thermal stability of prepared film. The glass transform temperature (Tg) was detected by differential scanning calorimetry (DSC) and the water resistance of film was evaluated through water contact angle (WCA). The average particle size of latex was 62.99 nm and PDI was 0.069. Keywords MSFA · VTES · BZMA · Novel emulsifier · Preparation
Introduction Self-crosslinking fluorocarbon acrylate (SFA) latex has been applied to various fields, such as painting industry, medical instruments, textile, printing dye, aerospace, adhesives, and so on. Due to excellent performance like good film formation, mechanical stability, anticorrosion, gloss, antifouling, adhesion, and tensile strengthen, SFA latex has received more and more attention (Hao et al. 2013; Xu et al. 2012a, b, 2014; Machotova et al. 2017; Zhang et al. 2018). Conventional acrylate polymer has been substituted by modified latex for its defects. Poor water resistance, heat resistance, and thermal stability of acrylate latex made it not suitable for further expansion of the scope of application (Xu et al. 2014; Zhang et al. 2018; Zhong et al. 2019; Sui et al. 2019; Hao * Lijun Chen [email protected] 1
School of Chemical Engineering, Zhejiang University of Technology, No. 18 Chaowang Road, Hangzhou 310032, Zhejiang, People’s Republic of China
2018). Thus, many researchers have contributed to looking for appropriate methods to solve such these problems. The earlier measure tackling this dilemma was to introduce in functional monomers such as fluorine and sili
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