Emulsion Polymerization

Aerdts, Annemieke M.; Herk, Alex M. van; Klumperman, Bert; Kurja, Jenci; German, Anton L.

doi:10.1002/9783527619313.ch9

Cited by 3 publications

(3 citation statements)

References 200 publications

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“…Step two is the formation of admicelle by the adsorption of surfactant layers onto the surface of the carbon nanotubes. The admicelle was defined as adsorbed micelle. , Because of the hydrophobic feature of carbon nanotubes, the hydrophobic chain of surfactant will anchor on the surface of carbon nanotubes. Step three is adsorption and adsolublization of monomer.…”

Section: Resultsmentioning

confidence: 99%

Polymer-Encapsulated Carbon Nanotubes Prepared through Ultrasonically Initiated In Situ Emulsion Polymerization

2003

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In this study, a novel ultrasonically initiated in situ emulsion polymerization approach was used to modify multi-walled carbon nanotubes (MWCNTs). The dispersion behavior of MWCNTs in aqueous solution under ultrasonic irradiation was investigated by spectrophotometry. Ultrasonically initiated emulsion polymerization of monomer n-butyl acrylate (BA) and methyl methacrylate (MMA) are reported. By employing the multiple effects of ultrasound, i.e., dispersion, pulverizing, activation, and initiation, the aggregation and entanglement of carbon nanotubes in aqueous solution can be broken down, while in situ polymerization of monomer BA or MMA on the surface of MWCNTs proceeds without any added chemical initiator; consequently, the MWCNTs are coated by the formed polymer. Transmission electron microscopy confirms that after surface modification through ultrasonically initiated in-situ polymerization, the size of MWCNTs increased; even after 72 h of Soxhlet extraction with boiling acetone there are still unextracted polymers in the modified MWCNTs, indicating strong interaction between the polymer and carbon nanotubes. The results of thermogravimetric analysis show that there are high encapsulation rates for PBA. The characteristic peak of CO in carbonyl groups at ∼1733 cm-1 still appears in the Fourier transform infrared spectrum of the extracted polymer-encapsulated MWCNTs. X-ray photoelectron spectroscopy further confirms the presence of polymer-encapsulated MWCNTs and strong interaction between polymer and MWCNTs. Therefore, ultrasonically initiated in situ emulsion polymerization provides a novel surface modification method for carbon nanotubes. The polymer-encapsulated carbon nanotubes can be well dispersed in Nylon 6 matrix. The interface adhesion between polymer-encapsulated carbon nanotubes and Nylon 6 is improved. The yield strength is improved ∼30% and the Young's modulus is improved ∼35% at only 1 wt % content of polymer-encapsulated carbon nanotubes.

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Section: Resultsmentioning

confidence: 99%

Polymer-Encapsulated Carbon Nanotubes Prepared through Ultrasonically Initiated In Situ Emulsion Polymerization

2003

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“…Polymer particles have attracted a great deal of interest and have been utilized in a wide range of elds. 1 Waterborne polymer colloids, oen referred to as 'emulsion dispersions', are wellestablished for diverse applications in many commercial products from different industrial segments, including cosmetics, pharmaceuticals, adhesives, coatings and paints [2][3][4][5] . A key advantage of the colloidal approach is that it enables direct control of the internal structure organization of the particles at nanoscale.…”

Section: Introductionmentioning

confidence: 99%

“…Examples of miniemulsion, suspension or dispersion polymerization processes can be found in the literature, but emulsion polymerization is by far the most frequently used technique. 7 Traditional AE methods to study emulsions and emulsion polymerization processes include FTIR, 1 H NMR or 13 C NMR, DSC, TGA, TEM, SEM, and laser diffraction particle size analysis, which study chemical substance, structure, morphologies, and thermodynamic performance. 1,7 However, as a multiphase system, a lot of research conclusions about it are still obscure, and further investigation is still needed to research the properties of emulsions systematically.…”

Section: Introductionmentioning

confidence: 99%

Systemic research of fluorescent emulsion systems and their polymerization process with a fluorescent probe by an AIE mechanism

Yang

Shen

et al. 2016

RSC Adv.

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Studying a novel AIE coating and its handling process via fluorescence spectrum

Yao

Wang

et al. 2017

RSC Adv.

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For polymer materials, both their compositions and preparation process greatly influence their service performance. Thus, the sound understanding of the relationship between materials' preparation processes and their properties is paramount. However, current research methods are partially limited due to the absence of a direct testing method to track the entire process, e.g. synthesizing, curing, ageing, and so on. With the ability for real-time sensitive characterization, fluorescence spectroscopy may be applied in testing polymer materials' performance. Here, we synthesized a novel aggregation induced emission (AIE) resin named TPE-EPOXY resin and prepared an AIE coating based on it.According to restriction of intramolecular rotation (RIR) mechanism, the preparation, curing, and aging processes for the AIE polymer resins & coatings could be studied with real-time observation. In addition, their properties could also be studied systematically. The results in this paper pave a good way to understand the relationship between the internal structure and the properties of polymer materials.Moreover, the prepared AIE polymer resins has a potential to expand the application fields of the AIE mechanism.

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Emulsion Polymerization

Cited by 3 publications

References 200 publications

Polymer-Encapsulated Carbon Nanotubes Prepared through Ultrasonically Initiated In Situ Emulsion Polymerization

Polymer-Encapsulated Carbon Nanotubes Prepared through Ultrasonically Initiated In Situ Emulsion Polymerization

Systemic research of fluorescent emulsion systems and their polymerization process with a fluorescent probe by an AIE mechanism

Studying a novel AIE coating and its handling process via fluorescence spectrum

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