Efficiently amplified ultrasonic degradation of spherical polyelectrolyte brushes by a magnetic field

Zhang, Rui; Hou, Xiaoyan; Cang, Yu; Yu, Zhenchuan; Shen, Zheqi; Zhou, Zhi; Guo, Xuhong; Wang, Junwei; Zhu, Xuedong

doi:10.1039/c5ra27405b

Cited by 5 publications

(3 citation statements)

References 51 publications

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“…Changes in polymer structure can be created during ultrasonic treatment as a result of cavitation and research has suggested that chain cleavage could occur preferentially at weak spots in the chain [36]. PS@PSS hairy nanoparticles used in this paper is a special fuzzy structure of dense core and loosened shell, so the thickness decrease in PS@PSS shown in Table 2 happened gradually from the chains outside to the inner side [37].…”

Section: Resultsmentioning

confidence: 99%

Stabilization of Pickering Emulsions by Hairy Nanoparticles Bearing Polyanions

et al. 2019

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Pickering emulsions are increasingly applied in drug delivery, oil–water separation, composite materials preparation, and other fields. However, systematic studies on the stabilization of Pickering emulsions to satisfy the growing application demands in multiple fields with long-term conservation are rare. Compared to conventional solid nanoparticles, polyanion-modified hairy nanoparticles are more stable in practical environments and are investigated in this study. Poly (sodium p-styrenesulfonate) was grafted to a polystyrene (PS) core via a photoemulsion polymerization. A hairy nanoparticle bearing polyanions called poly (sodium p-styrenesulfonate) brush (PS@PSS) was synthesized. The size and uniformity of the Pickering emulsions stabilized by PS@PSS were investigated via a polarizing microscope. The stability of Pickering emulsions were optimized by adjusting critical factors like ultrasonic power and time, standing time, oil phases, salt concentration, and water:oil ratio. Results indicated that the Pickering emulsions could be stabilized by PS@PSS nanoparticles, which showed remarkable and adjustable partial wetting properties. It was found that the optimized conditions were ultrasonic power of 150 W, ultrasonic time of 3 min, salt concentration of 0.1 mM, oil phase of hexadecane, and water:oil ratio of 1:1. The formation and stability of Pickering emulsion are closely related to the hairy poly (sodium p-styrenesulfonate) brush layer on the nanoparticle surface.

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Section: Resultsmentioning

confidence: 99%

Stabilization of Pickering Emulsions by Hairy Nanoparticles Bearing Polyanions

et al. 2019

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“…In the presence of the magnetic field, sonochemical efficiency increased 10-fold. Amplification of the magnetic field helped to decrease the viscosity of brush solution by boosting acoustic cavitation ( Zhang et al, 2016 ).…”

Section: Mechano-thermo-photo Irradiative and Green Chemical (Pre)treatment Of Plasticsmentioning

confidence: 99%

Progressing Plastics Circularity: A Review of Mechano-Biocatalytic Approaches for Waste Plastic (Re)valorization

Nikolaivits

Pantelic

Azeem

et al. 2021

Front. Bioeng. Biotechnol.

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“…Narrowly distributed hairy nanospheres (HNs) were prepared by the combination of conventional emulsion polymerization and photoemulsion polymerization according to our previous work [32][33][34]. First, a photoinitiator was generated on the core under the conditions of avoiding light.…”

Section: Synthesis Of Hairy Nanospheres (Hns)mentioning

confidence: 99%

Hairy Fluorescent Nanospheres Based on Polyelectrolyte Brush for Highly Sensitive Determination of Cu(II)

Wang

Chen

et al. 2020

Polymers

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Currently, it is an ongoing challenge to develop fluorescent nanosphere detectors that are uniform, non-toxic, stable and bearing a large number of functional groups on the surface for further applications in a variety of fields. Here, we have synthesized hairy nanospheres (HNs) with different particle sizes and a content range of carboxyl groups from 4 mmol/g to 9 mmol/g. Based on this, hairy fluorescent nanospheres (HFNs) were prepared by the traditional coupling method (TCM) or adsorption-induced coupling method (ACM). By comparison, it was found that high brightness HFNs are fabricated based on HNs with poly (acrylic acid) brushes on the surface via ACM. The fluorescence intensity of hairy fluorescent nanospheres could be controlled by tuning the content of 5-aminofluorescein (5-AF) or the carboxyl groups of HNs easily. The carboxyl content of the HFNs could be as high as 8 mmol/g for further applications. The obtained HFNs are used for the detection of heavy metal ions in environmental pollution. Among various other metal ions, the response to Cu (II) is more obvious. We demonstrated that HFNs can serve as a selective probe and for the separation and determination of Cu(II) ions with a linear range of 0–0.5 μM and a low detection limit of 64 nM.

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Efficiently amplified ultrasonic degradation of spherical polyelectrolyte brushes by a magnetic field

Abstract: This work describes a facile and green method about the ultrasonic degradation of polymer chains amplified by magnetic field.

Cited by 5 publications

References 51 publications

Stabilization of Pickering Emulsions by Hairy Nanoparticles Bearing Polyanions

Stabilization of Pickering Emulsions by Hairy Nanoparticles Bearing Polyanions

Progressing Plastics Circularity: A Review of Mechano-Biocatalytic Approaches for Waste Plastic (Re)valorization

Hairy Fluorescent Nanospheres Based on Polyelectrolyte Brush for Highly Sensitive Determination of Cu(II)

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