Synthesis and characterization of novel acrylate emulsion containing phosphorus and silicon prepared via semi-continuous seeded emulsion polymerization

Jiang, Wei; Li, Wen; Chen, Lijun

doi:10.1080/15685551.2014.971393

Cited by 5 publications

(3 citation statements)

References 4 publications

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“…Therefore, it was necessary to control the usage amount of KH-570 to lower the cross-linking degree during the emulsion polymerization. In addition, Jiang et al (2015) compared the effects of different ways of adding KH-570 on the performance of the latex, and discovered that adding KH-570 after other monomers could reduce the time of KH-570 in the weak acid (phosphoric acid) emulsion. At the same time, the study had confirmed that a small amount of KH-570 could enhance the roughness, toughness and weather resistance of latex film (Lu et al , 2016; Sui et al , 2019).…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of self-cross-linking long fluorocarbon polyacrylate latex modified by silane cross-linker

Shao

Chen

2020

PRT

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Purpose Silane cross-linkers have been used to strengthen the mechanical stabilities and friction resistance of plastic products. Therefore, the effect of silane cross-linkers on latex has been studied through preparing modified self-cross-linking long fluorocarbon polyacrylate latex. In this paper, nonionic surfactant alcohol ether glycoside (AEG1000) and anionic polymerizable surfactant 1-allyloxy-3-(4-nonylphenol)-2-propanol polyoxyethylene (10) ether ammonium sulfate (DNS-86) acted as mixed emulsifier and 3-(methacryloyloxy) propyltrimethoxysilane (KH-570) and bis (2-ethylhexyl) maleate (DOM) were used as functional monomers. Design/methodology/approach The modified acrylate polymer latex was synthesized through the semi-continuous seeded emulsion polymerization with methyl methacrylate (MMA), butyl acrylate (BA), dodecafluoroheptyl methacrylate (DFMA) and hydroxypropyl methacrylate (HPMA) as main monomers. Potassium persulfate (KPS) was applied to initiate polymerization reaction, nonionic surfactant AEG1000 and DNS-86 acted as emulsifier, KH-570 and DOM were used as functional monomers, respectively. Findings The optimum conditions of synthesizing the modified latex were the following. The mass ratio of monomers containing MMA, BA, DFMA, HPMA, KH-570 and DOM was 13.58:13.58:0.90:1.20:0.15:0.60, the usage of initiator KPS was 0.5% of the total weight of monomers and the amount of emulsifier was 7% of all monomers with AEG1000:DNS-86 = 1:1. The results indicated that the conversion of monomer was 99% and the coagulation was about 2.0%. Originality/value The resultant latex was modified silane cross-linker KH-570 and DOM, which positively affected the comprehensive properties of latex and its film. Apart from this, the novel mixed emulsifier was used to improve the size and distribution of latex particles and reduce environmental problems caused by the use of emulsifiers.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of self-cross-linking long fluorocarbon polyacrylate latex modified by silane cross-linker

Shao

Chen

2020

PRT

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“…Silicon-containing polymers have many attractive surface properties, such as an exceptionally low glass transition (T g ) temperature, low elastic modulus, and good thermal and chemical stability. Organic silicon monomer with its coupling effect can effectively improve the adhesion of the polymer to a substrate [16]. In addition, the price of organic silicon monomer is lower than that of organic fluorine monomer, so the introduction of silicon monomer to polyacrylate latex can not only save costs but also improve adhesion performance.…”

Section: Introductionmentioning

confidence: 99%

Fluoro‐silicone Modified Polyacrylate Latex Emulsified with Green Surfactants

Wang

Zhang

Chen

2017

J Surfact & Detergents

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Fluoro‐silicone modified polyacrylate latex was successfully prepared by semi‐continuous seeded emulsion polymerization in the presence of a green mixed emulsifier consisting of cashew phenol polyoxyethylene ether sulfonate (BCE‐10B) anionic surfactant and alkyl polyglycoside (APG) nonionic surfactant, in which the mixed monomers were initiated with potassium persulfate (KPS). The structure and properties were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and contact angle (CA), respectively. Results show that the optimal conditions of synthesizing the novel emulsion are as follows: the total concentration of mixed emulsifiers is 5.0%; the optimum mass ratio of APG to BCE‐10B is 2:1; the amount of initiator is 0.6%; the composition of main monomers of MMA:BA = 1:1; and the concentrations of HFMA and VTES are 4.0 and 6%, respectively. In this case, the resultant emulsion showed good thermal stability and hydrophobicity.

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“…[1][2][3][4][5][6][7] However, determining the relationship between particle coagulation and particle size distribution of final latex particles is still a matter of debate, for instance, Ishii et al [8] considered that a steady growth without the aggregation of particles was necessary for preparing monodisperse polymer particles; In contrast, Telford et al [9] considered that the monodisperse polymer particles could be obtained in the presence of particle coagulation.…”

Section: Introductionmentioning

confidence: 99%

A novel approach to prepare large-scale and narrow-dispersed latex particles by emulsion polymerization based on particle coagulation mechanism

Liu

Deng

Sun

et al. 2015

Designed Monomers and Polymers

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In order to understand the mechanism of narrow particle size distribution of the final latex during particle coagulation, a series of experiments were performed to investigate the effect of polymer nature on particle coagulation capability. In particular, thermodynamics and kinetics in aqueous phase were considered to illustrate the detail process of particle coagulation. The final particle size decreased with the increasing side chain length of alkyl methacrylate from 181.5 nm in MMA to 131.6 nm in EMA, 119.3 nm in PMA, and 115.1 nm in BMA, indicating that the particle coagulation capability was proportional to the hydrophilicity of polymer. With increasing polymer hydrophilicity, the affinity between surfactant molecules and particle surface decreased, thus enhancing the particle coagulation capability. Moreover, the critical length of oligomer radical also increased with increasing hydrophilicity and the efficiency of radical capture decreased, thus increasing the saturation of monomer concentration in the inner part of particle, promoting particle coagulation. Combining these results and the La Mer Diagram, a novel approach was developed to prepare large-scale, narrow-dispersed, and high solid content polymer latex based on particle coagulation mechanism. Three criteria, namely, rapid nucleation, fast coagulation, and a long growth period, should be met to produce latex with a narrow particle size distribution.

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Synthesis and characterization of novel acrylate emulsion containing phosphorus and silicon prepared via semi-continuous seeded emulsion polymerization

Cited by 5 publications

References 4 publications

Preparation and characterization of self-cross-linking long fluorocarbon polyacrylate latex modified by silane cross-linker

Preparation and characterization of self-cross-linking long fluorocarbon polyacrylate latex modified by silane cross-linker

Fluoro‐silicone Modified Polyacrylate Latex Emulsified with Green Surfactants

A novel approach to prepare large-scale and narrow-dispersed latex particles by emulsion polymerization based on particle coagulation mechanism

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