Controllable production of deuterated polymer beads for ICF

Liu, Meifang; Zheng, Yueqing; Chen, Qiang; Wang, Yuguang; Liu, Yiyang; Li, Jing; Li, Jie; Huang, Yawen; Yin, Qiang

doi:10.1016/j.jnucmat.2020.152159

Cited by 8 publications

(2 citation statements)

References 30 publications

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“…Previous work has confirmed that the weight loss of the microspheres below 200 C was due to the evaporation of residual solvents during the preparation of the microspheres. [30] Table 2 showed the weight loss percentages of the polymer material and microspheres at 200 C. The weight loss of the PS material and PS microspheres at 200 C are 0% and 0.1%, respectively, which indicated a residual FB mass fraction of 0.1% in the PS microspheres. The weight loss of the PAMS material and PAMS microspheres at 200 C are 0.3% and 0.6% respectively, indicating a residual FB mass fraction of 0.3% in the PAMS microspheres.…”

Section: Effect Of Polymer Molecular Structure On the Thermal Propert...mentioning

confidence: 99%

Effect of polymer molecular structure on the quality of thin‐walled hollow microspheres for inertial confinement fusion

Zhu

et al. 2023

Polymer Engineering & Sci

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Polymer microspheres can be used as fuel containers for laser inertial confinement fusion (ICF) due to their low atomic number, low density, and high thermal stability. The thin-walled polymer microspheres are prone to cracking due to an increase in the diameter to thickness ratio (diameter/wall thickness).The effect of polystyrene (PS) and Poly (α-methyl styrene) (PAMS) materials commonly used in ICF experiments on the quality of thin-walled microspheres is investigated. PS hollow microspheres show better sphericity, smoother surface, and lower cracking rate than PAMS microspheres. Moreover, the heat treatment of solidified PS microspheres can improve the strength so that the cracking rate of the microspheres decreases. The relative mechanism of how the molecular structure affect the quality is also discussed. This study provides some guidance for the preparation of thin-walled polymer microspheres with high quality for ICF experiments.

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Section: Effect Of Polymer Molecular Structure On the Thermal Propert...mentioning

confidence: 99%

Effect of polymer molecular structure on the quality of thin‐walled hollow microspheres for inertial confinement fusion

Zhu

et al. 2023

Polymer Engineering & Sci

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“…Polymer beads are solid polymer pellets. [64] This type of material is preferred to support enzymes' immobilization when it comes to bioreactors over resins and inorganic adsorbents. [28] Few works in the literature investigated the use of polyacrylonitrile beads for laccase immobilization.…”

Section: Beadsmentioning

confidence: 99%

A Perspective Review on the Application of Polyacrylonitrile‐Based Supports for Laccase Immobilization

Vieira

Gurgel

Henriques

et al. 2021

The Chemical Record

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The use of laccases applied in bioremediation processes has been increasingly studied, given the urgent need to overcome the environmental problems caused by emerging contaminants. It is known that immobilized enzymes have better operational stability under reaction conditions, allowing for greater applicability. However, given the lack of commercially available immobilized laccases, the search for immobilization materials and methods continues to gain effort. The use of polyacrylonitrile (PAN) to immobilize enzymes has been investigated since it is a low-cost material and can be modified and functionalized to well interact with the enzyme. This polymer can be used with different morphologies such as fibers, beads, and coreshell, presenting as an easily applicable alternative. This review presents the missing link between polymer and enzyme through an overview of PAN's current use as support for laccase immobilization and polymer functionalization methods, considering the importance of immobilized laccases in several industrial sectors.

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Fabrication and characterization of deuteration‐rich polymer microsphere for high‐yield neutron source

Liu,

Chen,

Liu

et al. 2024

Polymer Engineering & Sci

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A new type of deuterated polymer microspheres with a much higher deuterium/carbon (D/C) atom ratio was designed and fabricated to produce high‐yield thermonuclear neutrons. Supramolecular deuterated polycyclooctene (D‐PCOE) with ~1.7 D/C atom ratio was synthesized, which well meets the requirements including higher D/C atom ratio, good solubility for processability, and excellent mechanical properties. Monodispersed D‐PCOE microspheres including shells and beads are fabricated by a microfluidic technique. The properties of the D‐PCOE materials and corresponding microspheres are analyzed and compared with those of the deuterated polystyrene microspheres (~1 D/C atom ratio), which have been widely used in laser‐driven spherically convergent plasma fusion experiments. This work expands the category of deuterated polymeric materials and provides a new type of deuterated polymer microspheres in the forthcoming high‐yield neutron experiments.Highlights Supramolecular D‐PCOE with ~1.7 D/C atom ratio was successfully synthesized. Monodispersed D‐PCOE microspheres were successfully fabricated. The quality of D‐PCOE microspheres is also investigated.

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Controllable production of deuterated polymer beads for ICF

Cited by 8 publications

References 30 publications

Effect of polymer molecular structure on the quality of thin‐walled hollow microspheres for inertial confinement fusion

Effect of polymer molecular structure on the quality of thin‐walled hollow microspheres for inertial confinement fusion

A Perspective Review on the Application of Polyacrylonitrile‐Based Supports for Laccase Immobilization

Fabrication and characterization of deuteration‐rich polymer microsphere for high‐yield neutron source

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