Synthesis and Properties of Cross-linked Fluorine and Silicon VAc-VeoVa Polymer Latex Emulsified by Green Mixed Surfactant

Chen, Lijun; Shao, Tantan; Gong, Yilu; Wang, Xiuming; Sun, Zhijuan

doi:10.32381/jpm.2018.35.03.3

Cited by 4 publications

(3 citation statements)

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“…Tertiary vinyl carbonate has a similar reactivity rate with vinyl acetate, which makes the chemical reaction of emulsion copolymerization between tertiary vinyl carbonate and vinyl acetate easier. [1][2][3][4][5] Since tertiary vinyl carbonate can improve the water resistance of vinyl acetate emulsions, there are some reports on tertiary vinegar copolymer latex, which is prepared with the efficient and environmentally friendly emulsifiers and new functional monomers. [6][7][8][9][10][11] Soapfree emulsion polymerization can be used to obtain emulsion particles with clean surface and uniform size.…”

Section: Introductionmentioning

confidence: 99%

Study on modified VAc-VeoVa10 latex prepared by soap-free emulsion polymerization

Gong,

Chen

2023

Journal of Elastomers & Plastics

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Modified latex is prepared via the soap-free emulsion polymerization of ethyl acetate (VAc) and vinyl versatate (VeoVa10). DFHMA is used as modified monomers. The composite surfactants of SR-10 and ANPEO-10 are used as the composite emulsifiers. The polymerization is initiated by potassium sulfate (KPS). The structure of latex film was characterized by Fourier transform infrared spectroscopy (FTIR). The latex films were tested by thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and contact angle (CA) determinator. The particle size of the latex emulsion particle size is determined by the Zetatrac dynamic light scatter. Results show that the optimum condition of preparing the modified latex can be obtained, i.e. the amount of emulsifier is 4.0%; the mass ratio of SR-10 to ANPEO-10 is 1:1; the amount of initiator is 0.5%; the mass ratio ofVAc to VeoVa10 is 1:1; the amount of DFHMA is 5.0%. The appearance of the latex is blue and translucent with a small particle size. The conversion rate is more than 98%. Compared with the conventional latex, the hydrophobicity and heat resistance of the film have been improved. Moreover, the latex has good chemical stability and mechanical stability.

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Section: Introductionmentioning

confidence: 99%

Study on modified VAc-VeoVa10 latex prepared by soap-free emulsion polymerization

Gong,

Chen

2023

Journal of Elastomers & Plastics

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“…Hydrophobic or water-repellent coatings are highly demanded due to many useful properties such as antifouling [4,5], anticorrosion [6][7][8], low dirt pickup, and selfcleanability [9][10][11]. Copolymerization with a fluorinated acrylic monomer has traditionally been used to introduce hydrophobicity into latex coatings [12][13][14][15]. Fluorinated groups, which can impart several extraordinary properties to coatings [16,17], tend to enrich the film-air interface during latex film formation to reduce interfacial energy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Fluorinated Comonomer, Polymerizable Emulsifier, and Crosslinking on Water Resistance of Latex Coatings

et al. 2022

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Common latex coatings suffer from poor water resistance, which often limits their practical application. This paper reports on the preparation of polyacrylate latexes using various approaches to tune the water resistance, wettability, and surface properties of their coating films. The mutual effects of fluorinated monomer copolymerization, emulsifier type (polymerizable and general), and intra- or interparticle covalent crosslinking (due to allyl methacrylate copolymerization and a keto-hydrazide reaction, respectively) were studied. The polyacrylate latexes were synthesized through a two-step semicontinuous emulsion polymerization of 2,2,2-trifluoroethyl methacrylate, butyl acrylate, methyl methacrylate, and methacrylic acid as the basic monomers. The fluorinated monomer was incorporated into the second-step polymer (at a content of 30 wt.% based on the second-step monomer feeds). The water resistance, wettability, and surface properties of the coating films were evaluated with focus on the water absorption, water whitening, water contact angle, and surface topography using atomic force microscopy. It was found that highly water-resistant and hydrophobic coatings that possessed a self-healing ability were prepared, provided that the polymerizable emulsifier and the fluorinated monomer were involved in the latex synthesis, along with the intra- and interparticle covalent crosslinking.

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“…For example, when the waterborne coating prepared by the polymer is exposed to water in the application, the fluorocarbon group is internally migrated due to the hydrophobic nature of the fluorine group, causing the fluoromonomer to fail to perform its own function. Therefore, the introduction of cross-linked monomers makes the polymer molecules present a network structure or a three-dimensional structure, and a large steric hindrance can effectively prevent the fluorocarbon group from migrating inward (Machotova et al , 2018; Fang et al , 2019; Chen et al , 2003; Wang et al , 2016).…”

Section: Introductionmentioning

confidence: 99%

Comparative study on cross-linked fluorocarbon acrylate latex

Zhao

Chen

2022

PRT

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Purpose Self-crosslinked long fluorocarbon acrylate polymer latex has good hydrophobic and oleophobicity, weather resistance, aging resistance, stability and other excellent properties, which make the polymer be widely used in coatings, dyes, adhesives and other products. The purpose of this study is to prepare self-crosslinked long fluorocarbon acrylate polymer latex via semi-continuous seeded emulsion technology and carry out comparative study on two different cross-linked monomers. Design/methodology/approach Methyl methacrylate (MMA) and butyl acrylate (BA) were used as the main monomers, dodecafluoroheptyl methacrylate (DFMA) as the fluoromonomer, hydroxypropyl methacrylate (HPMA) and N-methylol acrylamide (NMA) as cross-linked monomers, and 1-allyloxy-3–(4-nonylphenol)-2-propanol polyoxyethylene (10) ether (ANPEO10) and 1-allyloxy-3–(4-nonylphenol)-2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) as compound emulsifiers via the semicontinuous-seeded emulsion polymerization. Findings The properties of the polymer emulsions, which are prepared with two different cross-linked monomers, are compared and discussed, and it is concluded that HPMA is more suitable for the preparation of self-crosslinked polymer emulsions. The formula of the polymer latex is ANPEO10: DNS-86 = 1:1, and the mass ratio of the monomers used in the polymer is MMA: BA: DFMA: HPMA = 14.40:14.40:0.60:0.60. Practical implications Self-crosslinked long fluorocarbon acrylate polymer latex can be used in many fields such as coatings, dyes, adhesives and other products. Originality/value The self-crosslinked long fluorocarbon acrylate polymer latex is prepared by mixing the nonionic emulsifier ANPEO10 and the anionic emulsifier DNS-86 when potassium persulfate is used as the thermal decomposition initiator and the semicontinuous-seeded emulsion technology is adopted and the comparative study on two different cross-linked monomer is carried out, which is not reported in the open literatures.

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Synthesis and Properties of Cross-linked Fluorine and Silicon VAc-VeoVa Polymer Latex Emulsified by Green Mixed Surfactant

Cited by 4 publications

References 0 publications

Study on modified VAc-VeoVa10 latex prepared by soap-free emulsion polymerization

Study on modified VAc-VeoVa10 latex prepared by soap-free emulsion polymerization

Effect of Fluorinated Comonomer, Polymerizable Emulsifier, and Crosslinking on Water Resistance of Latex Coatings

Comparative study on cross-linked fluorocarbon acrylate latex

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