![]() ![]() The results showed that the addition of MWCNTs in PMMA matrix can further reduce the secondary neutron generation of the pure polymer, while no obvious change was found in the proton transmission property. The role of MWCNTs embedded in PMMA matrix, in terms of radiation shielding effectiveness, was experimentally evaluated by comparing the proton transmission properties and secondary neutron generation of the PMMA/MWCNT nanocomposite with pure PMMA and aluminum. In this study, poly(methyl-methacrylate)/multi-walled carbon nanotube (PMMA/MWCNT) nanocomposite was fabricated. Polymers, on the other hand, can be filled with different filler materials for reinforcement of material properties, while at the same time provide sufficient radiation shielding function with lower weight and less secondary radiation generation. However, the issues related to weight and the secondary radiation generation make alloys not suitable for space radiation shielding. Low atomic-number materials are efficient in shielding particle- radiation, but they have relatively weak material properties compared to alloys that are widely used in space applications as structural materials. Radiation shielding in space missions is critical in order to protect astronauts, spacecraft and payloads from radiation damage. Li, Zhenhao Chen, Siyuan Nambiar, Shruti Sun, Yonghai Zhang, Mingyu Zheng, Wanping Yeow, John T. ![]() PMMA/MWCNT nanocomposite for proton radiation shielding applications ![]()
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