Enhanced Radiation Shielding with Conformal Light-Weight Nanoparticle–Polymer Composite

• DOI: 10.1021/acsami.8b10600
• Publication Date: 2018-09-17T12:46:47Z
• Authors: Qingxuan Li; Qilin Wei; Wenjun Zheng; Yiting Zheng; Nsikak Okosi; Zhiqiang Wang; Ming Su
• Keywords: Bismuth

This article reports a new property enabled by nanoparticles, where bismuth nanoparticles added in polymer matrix can block X-ray radiation several times more efficient than microparticles at the same mass ratio. Bismuth are made with cellulose nanofibers and dispersed evenly into polymer. A four time reduction of material is identified 2% ratio when (5 nm diameter) used composite to shield given flux energy radiation, relative those μm diameter). The enhancement shielding primarily attributed close packing normal incoming direction, which strong affinity interstitial space even distribution inside Given its low cost, light weight, structure conformability, nanoparticle-polymer will find use wide range fields related personal protection.