Preparation and structure of rare earth/thermoplastic polyurethane fiber for X‐ray shielding

Abstract

Rare earth/polypropylene (PP)/thermoplastic polyurethane (TPU) fibers were prepared by melting spinning with different mass ratios of PP to TPU. Then the rare earth/TPU shielding fiber was obtained by removing the PP matrix phase from the blend fiber using xylene. The fibers were characterized by Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), X-ray diffraction (XRD), thermogravimetric analyzer (TG), and scanning electron microscopy (SEM). Short fibers were compressionmolded for the test of lead equivalent. The results showed that the lead equivalent of the rare earth/TPU composite fibers was 0.19 mmPb when the mass ratio of PP/TPU increased to 60/40. At this mass ratio, the X-ray shielding performance of the fiber was the best.

Study on Organic Modification of Lanthanum Oxide

“…It is a good radiation protection material. A variety of rare earth/polymer radiation protection materials have been developed, such as rare earth/NR composite [1][2] , rare earth / PP composite fibers [3][4][5] , and rare earth doped barium tellurate glass [6] .…”

“…Therefore, organic modification of rare earth is needed to improve the compatibility, interfacial strength and dispersion between rare earth and polymer matrix. Acrylic acid, methacrylic acid and silane coupling agent are generally used for organic modification of rare earth [1][2][3][4][5][6] . However, the structure and modification methods of these modifiers are relatively simple, and the effects of modifier types on the structure and properties of rare earth and its dispersion in polymers have not been studied in detail.…”

Preparation of modified rare earth lanthanum oxide/polypropylene nonwoven fabric by meltblown method

“…Lou et al [12] found that the addition of rare earth oxides between the nonwoven layers can greatly improve the radiation protection properties of the composites. It was also found that used xylene method to remove PP matrix phase from melt-spun rare earth/polypropylene (PP)/ thermoplastic polyurethane (TPU) fibers, and prepared rare earth /TPU fibers with X-ray protection properties [13] . P. Vani et al [14] synthesized rare earth doped barium tellurate glasses and found that the increase of thulium doping in barium tellurate glasses can produce highly efficient high energy radiation shielding materials.…”

Multifiller nanocomposites containing gadolinium oxide and bismuth nanoparticles with enhanced X‐ray attenuation property

“…7 Polymer nanocomposites are shown to be promising candidates for diagnostic X-ray attenuation. 4,5,[8][9][10][11][12][13][14][15][16][17][18] For example, Ozdemir et al, have reported the development of 3-layered polydimethylsiloxane rubber composite containing hexagonal boron nitride, boron (III) oxide, bismuth (III) oxide in each layer for the shielding of mixed radiation. 17 Yilmaz et al, have discussed the mechanical, thermal and rheological properties of polydimethylsiloxane/bismuth (III) oxide composite for X/Gamma ray shielding.…”

“…20 Similarly, Lou et al, have reported the X-ray shielding property of rare earth/polypropylene/thermoplastic polyurethane fibers with a lead equivalence of 0.19 mm. 15 Wang et al, have developed X-ray shielding material consisting of high atomic number elements and natural leather. 21 Similarly, Jiang et al, have reported the radiation shielding property of BaSO 4 -cellulose nanocomposite against X-rays at 50 kV.…”