Barium sulfate/regenerated cellulose composite fiber with X-ray radiation resistance

Cellophane is a composite polymer material, made up of regenerated cellulose (usually derived from wood pulp) which has been chemically transformed into "viscose", then formed into a (1 mil thickness) transparent sheet through an extrusion process. Although primarily produced for the food industry, cellophane's use as a separator material in the silver-zinc secondary battery system has proved to be another important market. We examined 14 samples from five producers of cellophane, which are being evaluated as the separator material for a silver/zinc alkaline battery system in an autonomous underwater target vehicle. Our intent was to identify structural and/or chemical differences between samples which could be related to the functional differences seen in the lifetimes of these various battery separators. The unused cellophane samples were examined by transmission electron microscopy (TEM) and energy dispersive X-ray spectroscopy (EDS). Cellophane samples were cross sectioned (125-150 nm) using a diamond knife on a RMC MT-6000 ultramicrotome. Sections were examined in a Philips 430-T TEM at 200 kV. Analysis included morphological characterization, and EDS (for chemical composition). EDS was performed using an EDAX windowless detector.

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Biodegradable N, O-carboxymethyl chitosan/oxidized regenerated cellulose composite gauze as a barrier for preventing postoperative adhesion

Carbohydrate Polymers ◽

10.1016/j.carbpol.2018.10.077 ◽

2019 ◽

Vol 207 ◽

pp. 180-190 ◽

Cited By ~ 22

Author(s):

Feng Cheng ◽

Yadong Wu ◽

Hongbin Li ◽

Tingsheng Yan ◽

Xinjing Wei ◽

...

Keyword(s):

Carboxymethyl Chitosan ◽

Postoperative Adhesion ◽

Regenerated Cellulose ◽

Oxidized Regenerated Cellulose ◽

Cellulose Composite

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X-ray induced degradation of regenerated cellulose membrane films

Polymer Degradation and Stability ◽

10.1016/0141-3910(95)00145-c ◽

1995 ◽

Vol 50 (1) ◽

pp. 125-130 ◽

Cited By ~ 13

Author(s):

Yoshio Kawano ◽

Amadeu J.M. Logarezzi

Keyword(s):

Regenerated Cellulose ◽

Cellulose Membrane ◽

X Ray

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High-Strength Regenerated Cellulose Fiber Reinforced with Cellulose Nanofibril and Nanosilica

Nanomaterials ◽

10.3390/nano11102664 ◽

2021 ◽

Vol 11 (10) ◽

pp. 2664

Author(s):

Yu Xue ◽

Letian Qi ◽

Zhaoyun Lin ◽

Guihua Yang ◽

Ming He ◽

...

Keyword(s):

Cellulose Nanofibrils ◽

Cellulose Fiber ◽

High Strength ◽

Composite Fiber ◽

Regenerated Cellulose ◽

Fiber Reinforced ◽

Physical Strength ◽

Nano Sio2 ◽

Shear Thinning Fluids ◽

Regenerated Fibers

In this study, a novel type of high-strength regenerated cellulose composite fiber reinforced with cellulose nanofibrils (CNFs) and nanosilica (nano-SiO2) was prepared. Adding 1% CNF and 1% nano-SiO2 to pulp/AMIMCl improved the tensile strength of the composite cellulose by 47.46%. The surface of the regenerated fiber exhibited a scaly structure with pores, which could be reduced by adding CNF and nano-SiO2, resulting in the enhancement of physical strength of regenerated fibers. The cellulose/AMIMCl mixture with or without the addition of nanomaterials performed as shear thinning fluids, also known as “pseudoplastic” fluids. Increasing the temperature lowered the viscosity. The yield stress and viscosity sequences were as follows: RCF-CNF2 > RCF-CNF2-SiO22 > RCF-SiO22 > RCF > RCF-CNF1-SiO21. Under the same oscillation frequency, G’ and G” decreased with the increase of temperature, which indicated a reduction in viscoelasticity. A preferred cellulose/AMIMCl mixture was obtained with the addition of 1% CNF and 1% nano-SiO2, by which the viscosity and shear stress of the adhesive were significantly reduced at 80 °C.

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X-ray studies of regenerated cellulose fibers wet spun from cotton linter pulp in NaOH/thiourea aqueous solutions

Polymer ◽

10.1016/j.polymer.2006.02.044 ◽

2006 ◽

Vol 47 (8) ◽

pp. 2839-2848 ◽

Cited By ~ 82

Author(s):

Xuming Chen ◽

Christian Burger ◽

Dufei Fang ◽

Dong Ruan ◽

Lina Zhang ◽

...

Keyword(s):

Aqueous Solutions ◽

Cellulose Fibers ◽

Regenerated Cellulose ◽

Cotton Linter ◽

X Ray

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Overview radiography of abdominal organs in dogs and cats

Veterinariya, Zootekhniya i Biotekhnologiya ◽

10.36871/vet.zoo.bio.202004001 ◽

2020 ◽

Vol 1 (4) ◽

pp. 6-14

Author(s):

V. N. Baymatov ◽

◽

A. V. Metelev ◽

Keyword(s):

Barium Sulfate ◽

Bile Ducts ◽

Individual Characteristics ◽

Correct Selection ◽

X Ray ◽

Abdominal Organs ◽

Modern Methods ◽

Extrahepatic Bile Ducts ◽

Selection Of

Today, less attention has been paid to x-ray studies of animals in connection with the advent of more modern methods. At the same time, the quality of radiopaque substances decreased, which is reflected in this article. The Omnipack, Urografin, Visipack, Barium sulfate, Iodipamide, Bilignost and Biligrafin used in radiopaque contrast studies in most cases did not reveal the hepatobiliary system. Only the last two drugs gave satisfactory results. The complexity of the X-ray examination of the biliary system in cats and dogs lies in the features of the location of the extrahepatic bile ducts and the condition of the intestine, the size of the liver, its structure, echogenicity, the state of the vessels and surrounding organs. In this work, we took into account the anatomical variants of the development and location of organs in animals, which may complicate the study or evaluation of the data obtained. These included changes in the contours, shape, location of the gallbladder and its filling. The results obtained were compared with the available general species standards, taking into account the possible individual characteristics of each animal. Other studied drugs gave satisfactory results with an overall assessment of the abdominal organs, but we preferred Omnipack. Survey radiography provides a large amount of information with the correct selection of radiopaque substances.

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Ion-Exchange Paper—X-Ray Emission Procedure for Determination of Microgram Quantities of Mercury

Journal of AOAC INTERNATIONAL ◽

10.1093/jaoac/47.2.391 ◽

1964 ◽

Vol 47 (2) ◽

pp. 391-394

Author(s):

William B Link ◽

Keith S Heine ◽

J H Jones ◽

Percy Wattlington

Keyword(s):

Zinc Oxide ◽

Titanium Dioxide ◽

Emission Spectroscopy ◽

Barium Sulfate ◽

Magnesium Stearate ◽

Magnesium Carbonate ◽

Acid Solutions ◽

X Ray ◽

Aqueous Acid

Abstract A method has been developed for determining 1 μg of mercury in 100 ml of aqueous acid solution with a precision of ± 0.25 μg. In the method, the mercury is adsorbed by anion resinloaded paper and determined by X-ray emission spectroscopy. The method gave 75—125% recoveries of 1 μg of mercury from acid solutions containing 10 g of sodium sulfate, sodium chloride, iron oxide, magnesium carbonate, and calcium carbonate, and satisfactory recoveries from the HCl extract of carbon, barium sulfate, chromic oxide, bentonite, kaolin, talc, titanium dioxide, and magnesium stearate. Substantial changes in flow rate or acid concentration seem to have little effect on mercury absorption from HC1 solution. Mercury in zinc oxide or bismuth oxychloride cannot be determined by this technique.

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Formation and Application of High Reflectivity Controllable Barium Sulfate Microspheres

Crystals ◽

10.3390/cryst8090333 ◽

2018 ◽

Vol 8 (9) ◽

pp. 333 ◽

Cited By ~ 1

Author(s):

Yuejiao Liu ◽

Xiaoyan Guo ◽

Qingyang Gu ◽

Guangxiang He ◽

Suohe Yang ◽

...

Keyword(s):

Barium Sulfate ◽

Ethylenediaminetetraacetic Acid ◽

Density Lipoprotein ◽

High Sensitivity ◽

Particle Morphology ◽

Disodium Edta ◽

Reaction Conditions ◽

X Ray ◽

High Reflectivity ◽

Good Repeatability

This paper investigated the influence of reaction conditions on particle morphology. X-ray powder diffraction (XRD), particle size distribution (PSD), and scanning electron microscopy (SEM) were used to characterize the morphology of barium sulfate. The barium sulfate microspheres were synthesized with BaCl2, Na2SO4, and ethylenediaminetetraacetic acid disodium (EDTA·2Na). The reflectivity of the synthesized barium sulfate microspheres was greater than 99% in the range of 400–700 nm, which was characterized by a reflectance spectrometer. The morphology of the barium sulfate particles and their cross-section were observed by SEM. The prepared microspheres were applied to high-density lipoprotein dry tablets due to their high reflectivity, and the results showed that the prepared tablets had high sensitivity and good repeatability.

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Centrifugally Spun α-Fe2O3/TiO2/Carbon Composite Fibers as Anode Materials for Lithium-Ion Batteries

Applied Sciences ◽

10.3390/app9194032 ◽

2019 ◽

Vol 9 (19) ◽

pp. 4032 ◽

Cited By ~ 5

Author(s):

Luis Zuniga ◽

Gabriel Gonzalez ◽

Roberto Orrostieta Chavez ◽

Jason C. Myers ◽

Timothy P. Lodge ◽

...

Keyword(s):

Electron Microscopy ◽

Electrochemical Performance ◽

Lithium Ion Batteries ◽

Specific Capacity ◽

Lithium Ion ◽

Composite Fiber ◽

Carbon Composite ◽

Composite Fibers ◽

X Ray ◽

Binder Free

We report results on the electrochemical performance of flexible and binder-free α-Fe2O3/TiO2/carbon composite fiber anodes for lithium-ion batteries (LIBs). The composite fibers were produced via centrifugal spinning and subsequent thermal processing. The fibers were prepared from a precursor solution containing PVP/iron (III) acetylacetonate/titanium (IV) butoxide/ethanol/acetic acid followed by oxidation at 200 °C in air and then carbonization at 550 °C under flowing argon. The morphology and structure of the composite fibers were characterized using X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). These ternary composite fiber anodes showed an improved electrochemical performance compared to the pristine TiO2/C and α-Fe2O3/C composite fiber electrodes. The α-Fe2O3/TiO2/C composite fibers also showed a superior cycling performance with a specific capacity of 340 mAh g−1 after 100 cycles at a current density of 100 mA g−1, compared to 61 mAh g−1 and 121 mAh g−1 for TiO2/C and α-Fe2O3/C composite electrodes, respectively. The improved electrochemical performance and the simple processing of these metal oxide/carbon composite fibers make them promising candidates for the next generation and cost-effective flexible binder-free anodes for LIBs.

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Preparation and Characterization of Cellulose Films with Curcumin

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.834-836.555 ◽

2013 ◽

Vol 834-836 ◽

pp. 555-558

Author(s):

Jaranya Suksulap ◽

Potjanart Suwanruji ◽

Jantip Setthayanond

Keyword(s):

Tensile Testing ◽

Color Change ◽

Sodium Hydroxide Solution ◽

Cellulose Fiber ◽

Regenerated Cellulose ◽

Color Strength ◽

X Ray ◽

Cellulose Films ◽

Regenerated Cellulose Fiber

The cellulose film was prepared from regenerated cellulose fiber residue by dissolving the cellulose in sodium hydroxide solution at low temperature (-15 °C). The properties of the prepared film were investigated by tensile testing, Scanning Electron Microscope (SEM), X-ray Diffractometer (XRD) and also swelling ratio. Curcumin was added into the film with three different concentrations. The color strength of the curcumin-added film was evaluated and the color change of this film in different pH was also reported.

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