Effect of Bi2O3 particle sizes and addition of starch into Bi2O3–PVA composites for X-ray shielding

Azman, Nurul Zahirah Noor; Musa, Nurfadhlina; Razak, Nik Noor Ashikin Nik Ab; Ramli, Ramzun Maizan; Mustafa, Iskandar Shahrim; Rahman, Azhar Abdul; Yahaya, Nor Zakiah

doi:10.1007/s00339-016-0329-8

Cited by 36 publications

(13 citation statements)

References 27 publications

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“…McCaffrey et al (2007) have carried out a detailed study on the radiation attenuation properties of lead-based and non-lead-based shielding materials, where tungsten-rubber materials are found to be at par with lead-containing materials in attenuating X-rays of 100 and 120 keV energy. Thus, polymer nanocomposites containing non-lead-based fillers are gaining much attention as radiopaque materials which also provide an ease of handling due to their flexibility paving way for a wide range of applications (Azman et al 2016;Nambiar and Yeow 2012;Rathod et al 2017;Wozniak et al 2017). Silicone polymers, as discussed in our previous studies (Jayakumar et al 2017(Jayakumar et al , 2018, are widely used as polymer matrix for X-ray attenuating nanocomposites.…”

Section: Introductionmentioning

confidence: 98%

Synergistic effect of β-Bi2O3 and graphene/MWCNT in silicone-based polymeric matrices on diagnostic X-ray attenuation

et al. 2019

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The prolonged exposure of high-energy ionizing radiations during treatment of cancer/tumour and radiological examinations is hazardous to occupational workers and patients. Lead-incorporated composite materials are traditionally used as radiopaque fabrics, but are heavy, bulky and hence often cause inconvenience to users. Therefore, superior radiopaque protective wears that are preferably lead-free, light weight and flexible are being explored. Towards this goal, we study here the synergistic effect of graphene nanoplatelets and multi-walled carbon nanotube (MWCNT) on the X-ray attenuation property of polymer nanocomposites containing β-Bi 2 O 3 nanofillers. The effect of graphene and MWCNT at different concentrations on Bi 2 O 3 -based polymer nanocomposites is studied to attain optimal compositions with respect to its X-ray attenuation property and thermal stability. Surface topography and surface roughness of the nanocomposite blocks are studied using an atomic force microscope (AFM). The effect of the density of polymer on the curing, thermal stability and X-ray attenuation property is also studied by using silicone polymers of density 1.7 (G1) and 1.04 g/cm 3 (G2). The X-ray attenuation property of nanocomposites with G1 polymer matrix is found to be better than that of G2. The G1-based nanocomposite containing β-Bi 2 O 3 and graphene is found to be better than the one with G1 polymer containing β-Bi 2 O 3 and MWCNT. Thermal stability of multifiller nanocomposites is found to be better than the one without nanofillers. AFM topography images show a variation in surface roughness of nanocomposites with different fillers, which contributes to the different micro-and nano-structural architectures due to polymer-nanofiller interaction, thereby, affecting the X-ray attenuation of the nanocomposites. Our study shows that the multifiller nanocomposite containing β-Bi 2 O 3 and graphene nanoplatelets offer greater potential for the development of efficient radiopaque fabric materials.

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Section: Introductionmentioning

confidence: 98%

Synergistic effect of β-Bi2O3 and graphene/MWCNT in silicone-based polymeric matrices on diagnostic X-ray attenuation

et al. 2019

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“…Hence, to overcome this difficulty, the use of composites with high radiopaque fillers is being investigated. Barium sulfate (BaSO 4 ) [ 13 , 14 , 15 ], ferrous oxide (Fe 3 O 4 ) [ 16 ] and bismuth oxide (Bi 2 O 3 ) [ 17 , 18 ] have been previously reported as radiopaque composite fillers, and BaSO 4 is currently the most commonly used in medical applications. Barium sulfate (BaSO 4 ) is a standard in medical applications, approved by the FDA and used for X-ray assisted implantation to control the position of polymer implants and drug delivery systems during biodegradation [ 9 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Crystallization Behavior and Mechanical Properties of Poly(ε-caprolactone) Reinforced with Barium Sulfate Submicron Particles

et al. 2021

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Poly(ε-caprolactone) (PCL) was mixed with submicron particles of barium sulfate to obtain biodegradable radiopaque composites. X-ray images comparing with aluminum samples show that 15 wt.% barium sulfate (BaSO4) is sufficient to present radiopacity. Thermal studies by differential scanning calorimetry (DSC) show a statistically significant increase in PCL degree of crystallinity from 46% to 52% for 25 wt.% BaSO4. Non-isothermal crystallization tests were performed at different cooling rates to evaluate crystallization kinetics. The nucleation effect of BaSO4 was found to change the morphology and quantity of the primary crystals of PCL, which was also corroborated by the use of a polarized light optical microscope (PLOM). These results fit well with Avrami–Ozawa–Jeziorny model and show a secondary crystallization that contributes to an increase in crystal fraction with internal structure reorganization. The addition of barium sulfate particles in composite formulations with PCL improves stiffness but not strength for all compositions due to possible cavitation effects induced by debonding of reinforcement interphase.

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“…However, high mass element containing fillers may be added to PLA to obtain radiopaque composites and improve its mechanical properties. Barium sulfate (BaSO 4 ) [5][6][7], ferrous oxide (Fe 3 O 4 ) [8] and bismuth oxide [9,10] have been previously reported as radiopaque composite additives.…”

Section: Introductionmentioning

confidence: 99%

Benefits of Polydopamine as Particle/Matrix Interface in Polylactide/PD-BaSO4 Scaffolds

Sadaba

Larrañaga

Orpella‐Aceret

et al. 2020

IJMS

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This work reports the versatility of polydopamine (PD) when applied as a particle coating in a composite of polylactide (PLA). Polydopamine was observed to increase the particle–matrix interface strength and facilitate the adsorption of drugs to the material surface. Here, barium sulfate radiopaque particles were functionalized with polydopamine and integrated into a polylactide matrix, leading to the formulation of a biodegradable and X-ray opaque material with enhanced mechanical properties. Polydopamine functionalized barium sulfate particles also facilitated the adsorption and release of the antibiotic levofloxacin. Analysis of the antibacterial capacity of these composites and the metabolic activity and proliferation of human dermal fibroblasts in vitro demonstrated that these materials are non-cytotoxic and can be 3D printed to formulate complex biocompatible materials for bone fixation devices.

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Effect of Bi2O3 particle sizes and addition of starch into Bi2O3–PVA composites for X-ray shielding

Cited by 36 publications

References 27 publications

Synergistic effect of β-Bi2O3 and graphene/MWCNT in silicone-based polymeric matrices on diagnostic X-ray attenuation

Synergistic effect of β-Bi2O3 and graphene/MWCNT in silicone-based polymeric matrices on diagnostic X-ray attenuation

Crystallization Behavior and Mechanical Properties of Poly(ε-caprolactone) Reinforced with Barium Sulfate Submicron Particles

Benefits of Polydopamine as Particle/Matrix Interface in Polylactide/PD-BaSO4 Scaffolds

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