Monodisperse and multilayer core–shell latex via surface cross-linking emulsion polymerization

Mu, Yuanchun; Qiu, Teng; Li, Xiaoyü

doi:10.1016/j.matlet.2009.04.029

Cited by 40 publications

(17 citation statements)

References 18 publications

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“…Recently, there are many reports about the synthesis, characterization and application research of multi-layer core-shell latex particles (17,18) and surface functionalization core-shell latex particles (19)(20)(21). In our previous work, the poly(n-butyl acrylate)-poly(methyl methacrylateitaconic acid) (PBA-P(MMA-ITA)) had been successfully synthesized by a seeded emulsion polymerization method via batch process using itaconic acid (ITA) as the functional monomer (22).…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Large Dimension PBA-P(MMA-ITA) Latex Particles with Core-Shell Morphology

Liu

Tian

et al. 2013

Journal of Macromolecular Science, Part A

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In this paper, a novel large dimension poly(n-butyl acrylate)-poly(methyl methacrylate-itaconic acid) (PBA-P(MMA-ITA)) core-shell latex particles (CSR) with diameter of 200 nm∼300 nm were successfully synthesized via pre-emulsion and semi-continuous seeded emulsion polymerization process. The analysis on the surface tension and coagulation rate of polymeric system, size and distribution of latex particles indicated that the composite emulsifier of sodium dodecyl sulfonate/polyoxyethylene nonyl phenyl ether (SDS/OP-10) had the best emulsified effect. The optimal ratio of SDS/OP-10 was 1:1 and its optimum dosage was 1.0% of monomer amount. FTIR analysis results confirmed that ITA participated in the copolymerization reaction and the chemical bond between P(MMA-ITA) copolymer and PBA core existed in the interfacial of core and shell. DSC analysis results showed that the glass transition temperature (T g ) of P(MMA-ITA) copolymer increased with the increase of the ITA dosage and decreased with the increase of the core shell mass ratio. TEM images revealed that CSR particles had core-shell morphology indeed, but the particles' core-shell morphology would be changed at higher ITA dosage and core shell mass ratio. The size of CSR particles was 330 nm, and the diameter of PBA core was 290 nm. ITA content in the shell of CSR particles was analyzed by non-aqueous acid-base titration. ITA content was the highest at 6% of ITA dosage, ITA amount which chemically bonded with PBA core was the highest at 8% of ITA dosage. When the core shell mass ratio was 60/40, ITA content and ITA amount which grafted onto PBA core were both the highest. ITA content of CSR particles achieved above 1.11% in this work, and it is completely possible for using CSR particles toughening and compatibilizing polyamide 6 (PA 6).

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Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Large Dimension PBA-P(MMA-ITA) Latex Particles with Core-Shell Morphology

Liu

Tian

et al. 2013

Journal of Macromolecular Science, Part A

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“…Th e morphology consisted of Figure 3 shows the morphology of the PEI-coated silica nanoparticles. As shown in the TEM image, the resulting hybrid silica nanoparticles have a clear spherical and core -shell structure (Mu et al 2009), the dark-colored core for silica and light-colored shell for polymers. As it can be seen, with branched PEI modifi cation, silica nanoparticles were wrapped in the PEI molecule.…”

Section: Preparation and Characterization Of Pei Coated Silica Nanopamentioning

confidence: 94%

Acetylcholinesterase immobilized onto PEI-coated silica nanoparticles

Tümtürk

Yüksekdag

2014

Artificial Cells, Nanomedicine, and Biotechnology

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Polyethyleneimine (PEI) coated-silica nanoparticles were prepared by the Stöber method. The formation and the structure of the nanoparticles were characterized by ATR-FT-IR spectroscopy and transmission electron microscopy (TEM). TEM images of the silica and PEI-coated nanoparticles revealed that they were well dispersed and that there was no agglomeration. The acetylcholineesterase enzyme was immobilized onto these nanoparticles. The effects of pH and temperature on the storage stability of the free and immobilized enzyme were investigated. The optimum pHs for free and immobilized enzymes were determined as 7.0 and 8.0, respectively. The optimum temperatures for free and immobilized enzymes were found to be 30.0 and 35.0°C, respectively. The maximum reaction rate (Vmax) and the Michaelis-Menten constant (Km) were investigated for the free and immobilized enzyme. The storage stability of acetylcholinesterase was increased when immobilized onto the novel PEI-coated silica nanoparticles. The reuse numbers of immobilized enzyme were also studied. These hybrid nanoparticles are desirable as carriers for biomedical applications.

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“…The core structure as seed was prepared by emulsion polymerization [23]. Then the monomers were polymerized on the seed surface.…”

Section: Preparation Of Core-shell Mip For Lincomycin Amentioning

confidence: 99%

Preparation of core–shell molecular imprinting polymer for lincomycin A and its application in chromatographic column

Wang

Cao

2015

Process Biochemistry

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Monodisperse and multilayer core–shell latex via surface cross-linking emulsion polymerization

Cited by 40 publications

References 18 publications

Synthesis and Characterization of Large Dimension PBA-P(MMA-ITA) Latex Particles with Core-Shell Morphology

Synthesis and Characterization of Large Dimension PBA-P(MMA-ITA) Latex Particles with Core-Shell Morphology

Acetylcholinesterase immobilized onto PEI-coated silica nanoparticles

Preparation of core–shell molecular imprinting polymer for lincomycin A and its application in chromatographic column

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