Synthesis of mesoporous poly(melamine-formaldehyde) particles by inverse emulsion polymerization

Schwarz, Dana; Weber, Jens

doi:10.1016/j.jcis.2017.03.064

Cited by 15 publications

(5 citation statements)

References 39 publications

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“…This disposition is also confirmed by the PMF images obtained by Schwarz and Weber, 2017. When comparing the micrographs of Cel-M-Si and PMF-Si materials, it can be concluded that the hydrogel has a morphology that allows greater water retention, but has a smaller amount of dispersed particles on its surface.…”

Section: Scanning Electron Microscopy Of Compositessupporting

confidence: 62%

Melamine-formaldehyde-silica and melamine-silica-cellulose composites in removing Iron and N-ammonia from landfill leachate

Santos

Junior

Silva

et al. 2021

RSD

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Melamine-formaldehyde based composites are versatile and can be applied in the treatment of contaminated effluents such as landfill leachate that have a high pollutant load, as they are rich in nitrogen atoms, the sites allow interaction with molecules, atoms or ions of interest. Aiming compares the efficiency of two materials based on the same precursors, evaluating the efficiency of two composites, melamine-silica (PMF-Si) and melamine-silica-cellulose (Cel-M-Si) in removing iron and ammonia nitrogen in landfill leachate. Adsorption kinetics showed that PMF-Si and Cel-M-Si composites adsorb iron from 30 min, with an average removal of ~ 93.4%. Application of Cel-M-Si to removed leachate ca. 75.7% iron and 76.6% ammonia nitrogen. In contrast, it was observed that PMF-Si had a removal efficiency of 70.9% for iron and 55.0% for ammonia nitrogen. The comparative tests allowed to conclude that the composites PMF-Si and Cel-M-Si have potential for the treatment of landfill leachate, being low cost materials and easy synthesis.

show abstract

Section: Scanning Electron Microscopy Of Compositessupporting

confidence: 62%

Melamine-formaldehyde-silica and melamine-silica-cellulose composites in removing Iron and N-ammonia from landfill leachate

Santos

Junior

Silva

et al. 2021

RSD

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show abstract

“…The basic formation mechanism of polymer-wrapped PQD is a reversed emulsion process. 36 It is shown in Scheme 1 and described in the text. In the reversed emulsion, the water-phase solvent (DMF) is dispersed in the oil-phase solvent (n-hexane) in the form of several small droplets.…”

Section: Resultsmentioning

confidence: 99%

“…Unlike the previous method of synthesizing PQDs first and then coating the PQDs with a protective layer, ,, our method is used to synthesize the PQDs inside the emulsion directly. The basic formation mechanism of polymer-wrapped PQD is a reversed emulsion process . It is shown in Scheme and described in the text.…”

Section: Resultsmentioning

confidence: 99%

Fluorescence Lifetime-Tunable Water-Resistant Perovskite Quantum Dots for Multidimensional Encryption

Liu

Zou

Chen

et al. 2020

ACS Appl. Mater. Interfaces

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Using temporal dimension in optical multiplexing is a promising method to increase the security of data encryption. However, adjusting the fluorescence lifetime of light-emitting material often results in inevitable changes in their fluorescence spectra, which is unfavorable for confidential information protection. Here, we report the preparation of various perovskite quantum dot/polymer nanospheres (PQD/polymer) with tunable and long fluorescence lifetimes but identical fluorescence spectra, which are ideal multidimensional data encryption materials. This new data encryption strategy utilizes the water sensitivity of perovskite and achieves spatial dimension encryption of information using different water stabilities between uncoated perovskite quantum dots and PQD/ polymer. The fluorescence lifetime of PQD/polymer is used as the coding element to achieve temporal dimension data encryption, and the data are decrypted by fluorescence lifetime imaging microscopy and time-gated luminescence imaging techniques. This study shows the potential of PQD/polymer as a new class of materials for advanced data encryption.

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“…Inverse emulsion polymerization and cross‐linking reaction were widely used to prepare microparticles and nanoparticles . In the present investigation, HMs were prepared using inverse emulsion and cross‐linking reaction.…”

Section: Resultsmentioning

confidence: 99%

Tannic Acid Cross‐linked Polysaccharide‐Based Multifunctional Hemostatic Microparticles for the Regulation of Rapid Wound Healing

Xiao

et al. 2018

Macromolecular Bioscience

101

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Hemostatic microparticles (HMs) have been widely used in surgery. To improve the comprehensive performance of HMs, multifunctional HMs named HM15 and HM15′ are prepared from starch, carboxymethyl chitosan, hyaluronic acid, and tannic acid. Herein, tannic acid is used as an effective cross‐linker. A 3D network structure for cell growth and wound repair can be formed by secondary cross‐linking. Through synergistic effect of these natural materials, the process of wound healing can be regulated controllably. HM15 and HM15′ have the ability of rapid hemostasis. Moreover, HM15′ shows excellent properties in antibacteria and wound healing acceleration. Blood clotting time treated with different HMs is shortened obviously from 436.8 s to 126 s. Compared with Celox, HM15 and HM15′ exhibited better broad spectrum antibacterial activity against both Escherichia coli and Staphylococcus aureus. Notably, the wound can be repaired rapidly by HM15′ in 14 days. These multifunctional HMs might have an important prospect in clinical application.

show abstract

Synthesis of mesoporous poly(melamine-formaldehyde) particles by inverse emulsion polymerization

Cited by 15 publications

References 39 publications

Melamine-formaldehyde-silica and melamine-silica-cellulose composites in removing Iron and N-ammonia from landfill leachate

Melamine-formaldehyde-silica and melamine-silica-cellulose composites in removing Iron and N-ammonia from landfill leachate

Fluorescence Lifetime-Tunable Water-Resistant Perovskite Quantum Dots for Multidimensional Encryption

Tannic Acid Cross‐linked Polysaccharide‐Based Multifunctional Hemostatic Microparticles for the Regulation of Rapid Wound Healing

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