Radiation shielding polymer composites: Ray-interaction mechanism, structural design, manufacture and biomedical applications

Chang, Qiru; Guo, Shaoyun; Zhang, Xianlong

doi:10.1016/j.matdes.2023.112253

Cited by 32 publications

(4 citation statements)

References 103 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, if the shielding thickness is insufficient, the dose may increase owing to secondary radiation generated by the reaction between fast neutrons and the shielding material, or neutrons whose energy is reduced because of the shielding material. The particle size of the shielding material affects the shielding effect [31,32]. As shown in Figure 12, gadolinium has a high neutron reaction cross-section; therefore, it is effective in shielding low-energy neutrons.…”

Section: Discussionmentioning

confidence: 99%

Fabrication of a Gd2O3-Based Film to Shield from Space Radiation inside Aircraft and Its Effectiveness

Kim,

Kim

2023

Aerospace

View full text Add to dashboard Cite

Aircraft are exposed to cosmic radiation depending on their flight altitude and latitude. Therefore, flight attendants are exposed to radiation for long periods. In this study, a 0.3 mm thick fabric was designed with which to manufacture crew clothes to shield them against external exposure to space radiation, and the shielding performance was analyzed based on empirical experiments in a real environment. Gadolinium oxide, which has a high neutron reaction cross-section, and tungsten, which is useful for gamma-ray shielding, were proposed as the main raw materials for the shielding fabric, and the shielding performance was evaluated using detectors on Arctic flight routes. Composite (KG-01) and single (KG-02) shielding materials were used. In the case of KG-01, the transmission dose rate was 90.7 ± 5.6% compared with the unshielded case, showing an average space-radiation dose reduction of 9.3%. With KG-02, the transmission dose rate was 103.1 ± 2.0% compared with the unshielded case, and the average dose rate increased by 3.1%; therefore, there was no shielding effect against space radiation. Considering the statistical error of the environmental radiation at aircraft flight altitudes, KG-01 had a shielding effect of at least 5%; however, KG-02 yielded no significant shielding effects.

show abstract

Section: Discussionmentioning

confidence: 99%

Fabrication of a Gd2O3-Based Film to Shield from Space Radiation inside Aircraft and Its Effectiveness

Kim,

Kim

2023

Aerospace

View full text Add to dashboard Cite

show abstract

“…To increase the accuracy of measuring the shielding rate of the thin film sheet, the radiation dose was measured in the presence and absence of the thin film sheet. The shielding ratio was calculated using Equation (4), where S denotes the shielding rate of the thin film sheet, D is the radiation dose before penetration, and D 0 is the radiation dose after penetration of the shielding film [ 32 ].

…”

Section: Methodsmentioning

confidence: 99%

The Development of a Composite Thin Film Barrier of Tungsten Fe3O4-rGO (FerGO) for the Radiation Shielding of Medical Personnel

Kim,

Hou,

Jang

et al. 2024

Polymers

View full text Add to dashboard Cite

Tungsten is the most effective eco-friendly material used for radiation shielding in hospitals. However, despite its commendable density and shielding performance, tungsten faces challenges in miscibility with other materials because of its elevated melting point and strength. In this study, to protect medical personnel against scattered rays, which are indirect X-rays, a lightweight material was prepared by mixing graphite oxide material, considering its thinness and flexibility. Tungsten particles were evenly dispersed in the polymer, and nanofibers were prepared using this blended polymer solution via electrospinning. Concurrently, the process technology was explored to craft a thin film sheet and obtain a lead-like shielding effect. A spinning solution was prepared by mixing Fe3O4-rGO (FerGO) and tungsten. At 60 kVp, 0.1 mm was measured as 0.097 mmPb, at 80 kVp, 0.2 mm was measured as 0.196 mmPb, and at 100 kVp, 0.3 mm was measured as 0.279 mmPb, showing similar shielding performance to lead. As density directly affects the shielding effect, graphene oxide played an important role in increasing the density of the material from 1.941 g/cm3 to 2.302 g/cm3. Thus, this study provides an effective process for producing thin film sheets equivalent to lead.

show abstract

“…81,82 Remarkably, this method accomplishes these transformations without necessitating the inclusion of toxic additives, marking a clear departure from conventional chemical techniques. [83][84][85] Additionally, analogous processes involving alternative curing or treatment sources like UV, 86 lasers, glow discharge, 87 visible light, and incoherent dielectric excimer lamps share similarities with irradiation treatment but typically result in comparatively milder changes. 88,89 Furthermore, these techniques offer the potential to introduce a variety of functional groups onto the surfaces of these emerging polymers.…”

Section: Radiation Synthesis and Modification Of Biopolymersmentioning

confidence: 99%

Sustainable natural biopolymers for biomedical applications

Monia

2023

Journal of Thermoplastic Composite Materials

View full text Add to dashboard Cite

Biopolymers are materials specifically engineered to interact with biological systems. They can be derived from either natural or synthetic sources, depending on the biological resources used or the manufacturing process employed. Over recent decades, these materials have gained significant popularity within the medical field due to their remarkable attributes such as biodegradability, bioactivity, and compatibility with human tissue. One notable application is their use as scaffolds for bone regeneration. Biopolymers, being renewable biomaterials, provide opportunities for continuous manufacturing and technological progress across various industries. These biomaterials have demonstrated great promise in medical sectors, including nerve regeneration and the production of surgical devices. Additionally, their versatility extends to non-biomedical applications, like food packaging. This paper aims to provide a comprehensive overview of different biopolymers, elucidating their properties, showcasing their latest applications, and delving into the state-of-the-art manufacturing technologies used in their production. Special emphasis is placed on their suitability as bone tissue repair and regeneration scaffolds, owing to their unique properties, which render them an ideal choice for this specific application.

show abstract

Radiation shielding polymer composites: Ray-interaction mechanism, structural design, manufacture and biomedical applications

Cited by 32 publications

References 103 publications

Fabrication of a Gd2O3-Based Film to Shield from Space Radiation inside Aircraft and Its Effectiveness

Fabrication of a Gd2O3-Based Film to Shield from Space Radiation inside Aircraft and Its Effectiveness

The Development of a Composite Thin Film Barrier of Tungsten Fe3O4-rGO (FerGO) for the Radiation Shielding of Medical Personnel

Sustainable natural biopolymers for biomedical applications

Contact Info

Product

Resources

About