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Wang Y, Qi X, Qin Y, An C, Guo J, Wang J. Preparation of blast furnace dust particle electrodes and their application in synergistic electrochemical degradation of saline polyvinyl alcohol wastewater. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 337:122574. [PMID: 37722474 DOI: 10.1016/j.envpol.2023.122574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/14/2023] [Accepted: 09/15/2023] [Indexed: 09/20/2023]
Abstract
Polyvinyl alcohol (PVA) has been widely used as a water-soluble plastic in laundry and dish detergent pods, yet wastewater contaminated with PVA is too difficult to be treated due to its high salinity and foaming. Here, we fabricated blast furnace dust (BFD) particle electrodes, and developed a three-dimensional electrocatalytic system (3DEC) to treat saline PVA wastewater. The optimum preparation condition for BFD particle electrode was iron carbon ratio of 2:1 doping with TiO2. The optimal parameters of 3DECs for PVA wastewater degradation were thoroughly investigated, with current density of 30 mA/cm2, electrode distance of 30 mm, pH value of 7.0, and particle electrode filling rate of 50%. PVA wastewater degradation rate could reach 89.33% within 120 min. The underlying mechanism of iron-carbon micro electrolysis and electrocatalytic system was further studied. PVA wastewater was degraded by direct catalytic oxidation from electrodes. A scavenger experiment showed that free radicals consisting of •OH and HClO mainly contributed to the PVA wastewater degradation. HClO was generated by Cl- at the electrocatalysis and micro electrolysis of particles. In addition, the lifetime of the prepared BFD particle electrode was 120 h, which exhibited electrochemical stability. These findings highlight that the 3DECs coupled with BFD particle electrode is a promising electrocatalysis process for the removal of PVA wastewater.
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Affiliation(s)
- Yue Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Xinxin Qi
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Yanting Qin
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Chenyun An
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China
| | - Jianhua Guo
- Australian Centre for Water and Environmental Biotechnology, The University of Queensland, 4072, Australia
| | - Jie Wang
- State Key Laboratory of Separation Membranes and Membrane Processes, Tiangong University, Tianjin, 300387, China; School of Environmental Science and Engineering, Tiangong University, Tianjin, 300387, China; School of Material Science and Engineering, Tiangong University, Tianjin, 300387, China; Cangzhou Institute of Tiangong University, Cangzhou, 061000, China.
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2
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Zhang W, Chen S, Chen S, Wang G, Han S, Guo J, Yang L, Hu J. Physical cross-linked aliphatic polycarbonate with shape-memory and self-healing properties. J Mol Liq 2023. [DOI: 10.1016/j.molliq.2023.121798] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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3
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Ultrasound Viscoelastic Properties of Biomass Polysaccharide Hydrogels as Evaluated by Rheometer Equipped with Sono-Device. Gels 2022; 8:gels8030172. [PMID: 35323285 PMCID: PMC8950677 DOI: 10.3390/gels8030172] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 02/21/2022] [Accepted: 02/28/2022] [Indexed: 12/18/2022] Open
Abstract
A viscoelastic rheometer was equipped with a sono-device and a water bath to enable measurement of storage moduli G′ and loss moduli G″ of biomass polysaccharide hydrogels such as Kanten agarose, κ-carrageenan, and konjac glucomannan under ultrasound (US) exposure. The action of low power of 43 kHz US on their hydrogels significantly decreased G′ of Kanten agarose and carrageenan after a few seconds of US exposure 0.1% strain. When US with 20 W output power was exposed under mechanical strain at 0.1%, lower values were obtained cyclically for 3 min US intervals. The values then reverted to the original moduli values when US was stopped in cases of Kanten agarose and carrageenan hydrogels. As G″ values were increased during US operation, the anhydro-L-galactose segments in their hydrogels were unable to relax the external US forces within the gel sufficiently, thereby leading to gel structure collapse at a higher strain percentage. These results suggest that US exposure induced deformational change in the hydrogel structure formed by hydrogen-bonded cross-links. However, US deformation was less in the case of deacetylated cross-linkage in konjac glucomannan hydrogel.
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Iresha H, Kobayashi T. Ultrasound-triggered nicotine release from nicotine-loaded cellulose hydrogel. ULTRASONICS SONOCHEMISTRY 2021; 78:105710. [PMID: 34411843 PMCID: PMC8379513 DOI: 10.1016/j.ultsonch.2021.105710] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/21/2021] [Revised: 07/18/2021] [Accepted: 08/03/2021] [Indexed: 05/13/2023]
Abstract
Ultrasound (US)-triggered nicotine release system in a cellulose hydrogel drug carrier was developed with three different cellulose concentrations of 0.45 wt%, 0.9 wt%, and 1.8 wt%. The nicotine-loaded cellulose hydrogels were fabricated by the phase inversion method when the nicotine and cellulose mixture in the 6 wt% LiCl/N, N-dimethylacetamide solvent was exposed to water vapor at room temperature. Nicotine was used as the medicine due to its revealed therapeutic potential for neurodegenerative diseases like Alzheimer's and Parkinson's diseases. The behavior of US-triggered nicotine release from nicotine-cellulose hydrogel was studied at 43 kHz US frequency at the changing US output powers of 0 W, 5 W, 10 W, 20 W, 30 W, and 40 W. The significant US-triggered nicotine release enhancement was noted for the hydrogels made with 0.9 wt% and 1.8 wt% cellulose loading. The matrix made with 0.9 wt% cellulose was exhibited the highest nicotine release at the 40 W US power, and differences in nicotine release at different US powers were noticeable than at 0.45 wt% and 1.8 wt% cellulose loadings. For the three cellulose hydrogel systems, the storage modulus (G') values at the 0.01 wt% strain rate were dropped from their initial values due to the US irradiation. This reduction was proportionately decreased when the US power was increased. The deconvolution of FTIR spectra of nicotine-loaded cellulose films before and after US exposure was suggested breakage of cellulose-nicotine and cellulose-water in the matrix; thus, the stimulated nicotine release from the cellulose matrix was promoted by the US irradiation.
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Affiliation(s)
- Harshani Iresha
- Department of Energy and Environment Science, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Niigata, Japan
| | - Takaomi Kobayashi
- Department of Energy and Environment Science, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Niigata, Japan; Department of Science and Technology Innovation, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Niigata, Japan.
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In Situ Viscoelasticity Behavior of Cellulose-Chitin Composite Hydrogels during Ultrasound Irradiation. Gels 2021; 7:gels7030081. [PMID: 34209349 PMCID: PMC8293256 DOI: 10.3390/gels7030081] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 06/28/2021] [Accepted: 06/28/2021] [Indexed: 11/17/2022] Open
Abstract
Composite hydrogels with different cellulose and chitin loading were prepared, and their in-situ viscoelastic properties were estimated under cyclic exposure of 43 kHz and 30 W ultrasound (US) using a sono-deviced rheometer. US transmitted into the hydrogel caused it to soften within about 10 sec, thus causing a decline in the storage modulus (G′) and loss modulus (G″). However, when the US was stopped, the G′ and G″ returned to their initial values. Here, G′ dropped gradually in response to the US irradiation, especially in the first cycle. After the second and third cycles, the decline was much quicker, within a few seconds. When the chitin component in the hydrogel was increased, the drop was significant. FTIR analysis of the hydrogels suggested that the peaks of -OH stretching and amide I vibration near 1655 cm−1 shifted towards lower wave numbers after the third cycle, meaning that the US influenced the hydrogen bonding interaction of the chitin amide group. This repetitive effect contributed to the breakage of hydrogen bonds and increased the interactions of the acetylamine group in chitin and in the -OH groups. Eventually, the matrix turned into a more stabilized hydrogel.
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6
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Ghanbarinia Firozjah R, Sadeghi A, Khoee S. Ultrasonic De-cross-linking of the pH- and Magneto-Responsive PHEMA/PMMA Microgel to Janus Nanoparticles: A New Synthesis Based on "Grafting from"/"Grafting to" Polymerization. ACS OMEGA 2020; 5:27119-27132. [PMID: 33134672 PMCID: PMC7594003 DOI: 10.1021/acsomega.0c02710] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 10/02/2020] [Indexed: 05/05/2023]
Abstract
Stimuli-responsive Janus nanoparticles (NPs) with a two-facial structure have been used widely in biomedical applications. Among several methods to prepare these NPs, surface-initiated atom transfer radical polymerization (SI-ATRP) has received much attention due to the precise deposition of polymers on the surface of the substrate. In this study, Janus nanoparticles with asymmetric surface chemistry were prepared through a masking method in three steps involving the covalent deposition of super paramagnetic iron oxide nanoparticles (SPIONs) on the cross-linked substrate based on methotrexate (MTX)-grafted poly(2-hydroxyethyl methacrylate) (CPM), surface functionalization of unreacted sites of immobilized SPIONs with 2-bromoisobutyryl bromide (BIBB) in order to prepare the macro-initiator (Br-Fe3O4-CPM), growing poly(methyl methacrylate) (PMMA) on the surface of the macro-initiator through the SI-ATRP method. Optical microscopy was utilized to monitor the successful modification of SPIONs. Poly(methyl methacrylate)-iron oxide-poly(2-hydroxyethyl methacrylate) (PMMA-Fe3O4-PHEMA) microgel was exposed to optimum ultrasound (US) waves to prepare the PMMA-Fe3O4-PHEMA nanoparticle. Transmission electron microscopy (TEM) was used to confirm the precise deposition of polymers and the Janus structure. The MTX release of US-synthesized Janus NPs was studied in PBS at pH values of 7.4 and 5.8. The release data were analyzed using the Excel add-in DDSolver program to evaluate the kinetics of the drug release process from the nanocarrier under different pH values.
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Affiliation(s)
- Rahim Ghanbarinia Firozjah
- Polymer Laboratory, School
of Chemistry, College of Science, University
of Tehran, P.O. Box 14155
6455, Tehran 1417466191, Iran
| | - Amirhossein Sadeghi
- Polymer Laboratory, School
of Chemistry, College of Science, University
of Tehran, P.O. Box 14155
6455, Tehran 1417466191, Iran
| | - Sepideh Khoee
- Polymer Laboratory, School
of Chemistry, College of Science, University
of Tehran, P.O. Box 14155
6455, Tehran 1417466191, Iran
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Xu L, Lee W, Rotenberg A, Böhlke M, Yoon K, Yoo SS. Localized Disruption of Blood Albumin-Phenytoin Binding Using Transcranial Focused Ultrasound. ULTRASOUND IN MEDICINE & BIOLOGY 2020; 46:1986-1997. [PMID: 32402673 DOI: 10.1016/j.ultrasmedbio.2020.04.011] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Revised: 04/02/2020] [Accepted: 04/10/2020] [Indexed: 06/11/2023]
Abstract
Plasma protein binding (PPB) plays an important role in drug pharmacokinetics, particularly for central nervous system drugs, as PPB affects the blood concentration of unbound drug available to cross the blood-brain barrier (BBB). We report the non-invasive, spatially specific disruption of PPB to phenytoin, an anti-epileptic drug with high affinity to albumin, using 250-kHz focused ultrasound (FUS) delivered in a pulsed manner (55-ms tone burst duration, 4-Hz pulse repetitions). Equilibrium dialysis performed on sonicated phosphate-buffered saline solution containing phenytoin and bovine serum albumin revealed a 27.7% elevation in the unbound phenytoin concentration compared with an unsonicated control. Sonication of a unilateral brain hemisphere in rats (n = 10) after intraperitoneal phenytoin injection revealed increased parenchymal phenytoin uptake compared with the unsonicated hemisphere, without evidence of temperature change or BBB disruption. These findings illustrate the use of FUS as a novel technique for spatially selective disruption of PPB, which may be applied to a wide range of drug-plasma protein interactions.
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Affiliation(s)
- Linda Xu
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Wonhye Lee
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Alexander Rotenberg
- Department of Neurology, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Mark Böhlke
- Massachusetts College of Pharmacy and Health Sciences University, Boston, Massachusetts, USA
| | - Kyungho Yoon
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA
| | - Seung-Schik Yoo
- Department of Radiology, Brigham and Women's Hospital, Harvard Medical School, Boston, Massachusetts, USA.
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8
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Kang HJ, Kim JH. Removal of Residual Toluene and Methyl Tertiary Butyl Ether from Amorphous Paclitaxel by Simple Rotary Evaporation with Alcohol Pretreatment. BIOTECHNOL BIOPROC E 2020. [DOI: 10.1007/s12257-019-0337-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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10
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Kwedi-Nsah LM, Kobayashi T. Ultrasonic degradation of diaminobenzidine in aqueous medium. ULTRASONICS SONOCHEMISTRY 2019; 52:69-76. [PMID: 30528487 DOI: 10.1016/j.ultsonch.2018.11.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/26/2018] [Revised: 11/05/2018] [Accepted: 11/06/2018] [Indexed: 06/09/2023]
Abstract
By using 500 kHz high frequency ultrasound (US), 3,3'-diaminobenzidine (DAB) was treated at pH 2 under air atmosphere. The US effect of DAB absorption at 280 nm was composed at 43 and 141 kHz for the detection of fluorescence. When 100 W of US power was used, the DAB absorption band decreased with exposure time. It was noted that, a new absorption broad band at 350 nm-500 nm appeared only under 141 and 500 kHz. Also, fluorescence spectra of the treated DAB were measured when excited at 370 nm. Increasing US exposure time resulted to a broad emission band at 478 nm, indicating that 1H,1'H-5,5'-Bibenzotriazole (BBT) was produced by US exposure at 500 kHz. This product was confirmed by NMR spectroscopy to be a triazine ring formed from NH2 proton in DAB, due to the formation of nitrite ions in the US aqueous medium at 500 kHz. Hence, DAB was degraded while BBT was formed.
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Affiliation(s)
- Louis-Marly Kwedi-Nsah
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
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11
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Mallakpour S, Azimi F. Using sonochemistry for the production of poly(vinyl alcohol)/MWCNT–vitamin B1 nanocomposites: exploration of morphology, thermal and mechanical properties. NEW J CHEM 2019. [DOI: 10.1039/c9nj00116f] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Functionalized MWCNTs with vitamin B1 as a green material were applied for the enhancement of poly(vinyl alcohol) properties.
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Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory
- Department of Chemistry, Isfahan University of Technology
- Isfahan 84156-83111
- Islamic Republic of Iran
- Research Institute for Nanotechnology and Advanced Materials
| | - Faezeh Azimi
- Chemistry Group
- Pardis College
- Isfahan University of Technology
- Isfahan 84156-83111
- Islamic Republic of Iran
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12
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Ge X, Liang WJ, Ge JF, Chen XJ, Ji JY, Pang XY, He M, Feng XM. Hexagonal Boron Nitride/Microfibril Cellulose/Poly(vinyl alcohol) Ternary Composite Film with Thermal Conductivity and Flexibility. MATERIALS (BASEL, SWITZERLAND) 2018; 12:E104. [PMID: 30598004 PMCID: PMC6337459 DOI: 10.3390/ma12010104] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 12/15/2018] [Accepted: 12/21/2018] [Indexed: 11/17/2022]
Abstract
Microfibril cellulose (MFC), which is detrimental to soil cultivation and environmental protection, is derived from waste pineapple leaves. Hexagonal boron nitride (h-BN) was modified with polydopamine (PDA)-PDA@h-BN named pBN, and then combined with MFC to prepare a novel hybrid powder. The effect of PDA on h-BN and the binding effect between pBN and MFC were characterized by X-ray photoelectron spectroscopy (XPS), Thermogravimetric (TG), scanning electron microscopy (SEM), and Fourier Transform-Infrared (FT-IR). Poly (vinyl alcohol) (PVA) was used as an eco-friendly polymeric matrix to prepare a pBN-MFC-PVA composite film. The mechanical strength, hydrophobicity, and thermal conductivity of the film were studied and the results confirmed that h-BN was chemically modified with PDA and was uniformly distributed along the MFC. The thermal conductivity of the pBN-MFC-PVA composite film increased with the addition of a pBN-MFC novel powder. MFC acted as "guides" to mitigate the h-BN agglomerate. In addition to the possible usage in the pBN-MFC-PVA composite film itself, the pBN-MFC hybrid powder may be a potential filler candidate for manufacturing thermal interface materials and wearable devices or protective materials.
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Affiliation(s)
- Xin Ge
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Wei-Jie Liang
- School of Materials Science and Engineering, Northwestern Polytechnical University, Xi'an 710072, China.
| | - Jian-Fang Ge
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Xun-Jun Chen
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Jian-Ye Ji
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Xiao-Yan Pang
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Ming He
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
| | - Xiao-Meng Feng
- College of Chemistry and Chemical Engineering, Zhongkai University of Agriculture and Engineering, Guangzhou 510230, China.
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Mohammadinezhad A, Marandi GB, Farsadrooh M, Javadian H. Synthesis of poly(acrylamide-co-itaconic acid)/MWCNTs superabsorbent hydrogel nanocomposite by ultrasound-assisted technique: Swelling behavior and Pb (II) adsorption capacity. ULTRASONICS SONOCHEMISTRY 2018; 49:1-12. [PMID: 30082252 DOI: 10.1016/j.ultsonch.2017.12.028] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2017] [Revised: 12/15/2017] [Accepted: 12/15/2017] [Indexed: 06/08/2023]
Abstract
In this research, the poly (acrylamide-co-itaconic acid)/multi-walled carbon nanotubes (P(AAm-co-IA)/MWCNTs) as a novel superabsorbent hydrogel nanocomposite was synthesized by graft copolymerization of acrylamide (AAm) and itaconic acid (IA) mixture in the presence of the MWCNTs using ammonium persulfate (APS) as a free radical initiator and methylenebisacrylamide (MBA) as a crosslinker under ultrasound-assisted condition. The blank P(AAm-co-IA) hydrogel and its composite with the MWCNTs were characterized by means of SEM, FTIR, XRD and TGA methods. The effects of different parameters such as pH, time, the MWCNTs content and salt solutions on swelling behavior were investigated. The stability of the hydrogel increased by any increase in the MWCNTs content, which might be attributed to the hydrophobic nature of the MWCNTs as well as the increase of the crosslinker density. The water retention capacity (WRC) of the P(AAm-co-IA) hydrogel increased in the presence of the MWCNT (10 wt%). The synthesized hydrogel nanocomposite was studied for Pb (II) adsorption from aqueous solution. The effects of different parameters such as contact time (5-90 min), Pb (II) initial concentration (25-175 mg/L) and initial pH (1.5-4.5) of solution on Pb (II) adsorption were investigated by batch method. In comparison to P(AAm-co-IA) hydrogel, the P(AAm-co-IA)/MWCNTs hydrogel nanocompoite showed better adsorption behavior toward Pb (II). One of the most important aspects of this research was to investigate the effects of ultrasonic waves on polymer matrix and its ability.
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Affiliation(s)
- Alireza Mohammadinezhad
- Department of Chemistry, College of Basic Sciences, Karaj Branch, Islamic Azad University, P.O. Box 31485-313, Karaj, Iran.
| | - Gholam Bagheri Marandi
- Department of Chemistry, College of Basic Sciences, Karaj Branch, Islamic Azad University, P.O. Box 31485-313, Karaj, Iran
| | - Majid Farsadrooh
- Young Researchers and Elite Club, Rasht Branch, Islamic Azad University, Rasht, Iran
| | - Hamedreza Javadian
- Universitat Politècnica de Catalunya, Department of Chemical Engineering, ETSEIB, Diagonal 647, 08028 Barcelona, Spain.
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Piergiovanni M, Cappiello A, Famiglini G, Termopoli V, Palma P. Determination of benzodiazepines in beverages using green extraction methods and capillary HPLC-UV detection. J Pharm Biomed Anal 2018; 154:492-500. [DOI: 10.1016/j.jpba.2018.03.030] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 03/14/2018] [Accepted: 03/15/2018] [Indexed: 01/03/2023]
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15
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Mallakpour S, Abdolmaleki A, Tabesh F. Ultrasonic-assisted manufacturing of new hydrogel nanocomposite biosorbent containing calcium carbonate nanoparticles and tragacanth gum for removal of heavy metal. ULTRASONICS SONOCHEMISTRY 2018; 41:572-581. [PMID: 29137788 DOI: 10.1016/j.ultsonch.2017.10.022] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/27/2017] [Revised: 10/22/2017] [Accepted: 10/23/2017] [Indexed: 06/07/2023]
Abstract
This article reports the first incorporation of calcium carbonate nanoparticles (CC NPs) into tragacanth gum (TG) to prepare a new hydrogel nanocomposite (HNC) system using a green, safe, and eco-friendly method, ultrasound irradiation as an efficient biosorbent of heavy metal ions from wastewater. Morphological studies revealed that the surface of obtained HNCs is rough, homogeneous, and porous-like due to the embedding of CC NPs as well as sonication in comparison to the neat TG which has a smooth surface. The particle size reduction was observed for CC NPs in the matrix (from 57 to 10 nm), which is owing to the extraordinary effect of sonication on this process. Thermal stability of HNCs has been increased after using CC NPs from 8.5 wt% for TG to about 22 wt% for HNCs. The optical band gap of TG/CC HNC 5 wt% calculated to be 4.46 eV which is less than that of CC NPs (5.58 eV) and even TG (6.28 eV) and this result indicated that TG/CC HNC 5 wt% is relatively more conductive than CC NPs and TG. The nitrogen adsorption-desorption disclosed an isotherm type III of Brunauer classification for TG/CC HNC 5 wt% and the surface area has been increased from 0.7 m2.g-1 for TG to 2.3 m2.g-1 for TG/CC HNC 5 wt%. Also, the BET surface area for TG/CC HNC 5 wt% calculated to be 7.8 nm which is classified into mesoporous materials. The Pb2+ ions were significantly removed from water using TG/CC HNC 5 wt% and the removal efficiency was determined as 83% at optimized conditions (pH = 5, adsorbent dosage = 0.015 g, time = 3 h, and Pb2+ concentration = 70 mg.L-1).
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Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; College of Pardis, Chemistry Section, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
| | - Amir Abdolmaleki
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; College of Pardis, Chemistry Section, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
| | - Farbod Tabesh
- College of Pardis, Chemistry Section, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
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16
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Mallakpour S, Hajjari Z. Ultrasound-assisted surface treatment of ZrO 2 with BSA and incorporating in PVC to improve the properties of the obtained nanocomposites: Fabrication and characterization. ULTRASONICS SONOCHEMISTRY 2018; 41:350-360. [PMID: 29137761 DOI: 10.1016/j.ultsonch.2017.09.041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Revised: 09/22/2017] [Accepted: 09/23/2017] [Indexed: 06/07/2023]
Abstract
This paper describes the preparation of poly(vinyl chloride) (PVC) nanocomposites (NCs) reinforced with modified zirconia (ZrO2) nanoparticles (NPs). The ZrO2 NPs were defined as efficient filler for PVC NCs. For achieving the best dispersion and improvement of properties, the surface of ZrO2 NPs was modified by Bovine Serum Albumin (BSA). Carboxylic acids and amines are important functional groups of BSA which handle the grafting BSA on the surface of ZrO2 NPs. The PVC/ZrO2-BSA NCs were fabricated by incorporation of various amounts of the ZrO2-BSA NPs (3, 6 and 9wt%) into PVC matrix. All the above processes were accomplished by ultrasonication asa green and environmentally-friendly method. Also, the magnetic and mechanical stirrer was used for the preparation of samples but the results are not suitable and the aggregation was observed which indicated the use of ultrasonic irradiation is the best method for the preparation of NC. The products were characterized by Fourier transform infrared spectroscopy, Transmission electron microscopy, Field emission scanning electron microscopy, X-ray diffraction, Thermogravimetric analysis, Ultraviolet-visible spectroscopy, photoluminescence spectroscopy, energy dispersive X-ray spectroscopy, wettability, and mechanical tests. The achieved PVC/ZrO2-BSA NCs showed high thermal stability, good mechanical, optical and wettability properties compared to the pure PVC. In addition, among the obtained NCs, the PVC/ZrO2-BSA NC 6wt% showed the best improvement.
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Affiliation(s)
- Shadpour Mallakpour
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran; Research Institute for Nanotechnology and Advanced Materials, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran.
| | - Zahra Hajjari
- Organic Polymer Chemistry Research Laboratory, Department of Chemistry, Isfahan University of Technology, Isfahan 84156-83111, Islamic Republic of Iran
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17
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Liu Q, Chen N, Bai S, Li W. Effect of silver nitrate on the thermal processability of poly(vinyl alcohol) modified by water. RSC Adv 2018; 8:2804-2810. [PMID: 35541492 PMCID: PMC9077398 DOI: 10.1039/c7ra12941f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2017] [Accepted: 01/07/2018] [Indexed: 11/23/2022] Open
Abstract
The thermal processing of poly(vinyl alcohol) (PVA) is a big challenge worldwide. In this article, silver nitrate (AgNO3), which can combine with the hydroxyl groups of PVA and water, was introduced to further improve the thermal processability of the poly(vinyl alcohol)/water system. The water states, thermal performance, and rheological properties of PVA modified by AgNO3 were investigated. The results showed that with the increasing of AgNO3 content, the content of bound water in system increased ascribing to the interaction among PVA, water and AgNO3, indicating that the bondage of PVA matrix on water enhanced, thus retarding the tempestuous evaporation of water in system during melt process and making more water remain in system to play the role of plasticizer. Meanwhile, that AgNO3 combined with the hydroxyl groups of PVA further weakened the self-hydrogen bonding of PVA, guaranteeing a lower melting point and higher decomposition temperature, and broadening the thermal processing window. The rheological properties of the modified PVA system showed that the torque and die pressure of the modified PVA system turned to stabilization during melt processing, testifying that the thermal processability of the PVA/water system was largely improved.
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Affiliation(s)
- Qing Liu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University Chengdu 610065 China +86-28-85402465 +86-28-85405136
| | - Ning Chen
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University Chengdu 610065 China +86-28-85402465 +86-28-85405136
| | - Shibing Bai
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University Chengdu 610065 China +86-28-85402465 +86-28-85405136
| | - Wenzhi Li
- State Key Laboratory of Special Functional Water Proof Materials, Beijing Oriental Yuhong Waterproof Technology Co., Ltd Beijing 100000 China
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18
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Zhu J, Li L, Wang Q. Effect of β-tricalcium phosphate on the thermal foaming behavior of poly(vinyl alcohol)/water system. J Appl Polym Sci 2017. [DOI: 10.1002/app.44737] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jun Zhu
- State Key Laboratory of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065 China
| | - Li Li
- State Key Laboratory of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065 China
| | - Qi Wang
- State Key Laboratory of Polymer Materials Engineering; Polymer Research Institute of Sichuan University; Chengdu 610065 China
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19
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Li K, Noguchi S, Kobayashi T. Ultrasound-Responsive Behavior of Gelatinous Ionic Liquid/Poly(vinyl alcohol) Composites. Ind Eng Chem Res 2016. [DOI: 10.1021/acs.iecr.6b02264] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kai Li
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Sarara Noguchi
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
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20
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Hirano K, Kobayashi T. Coumarin fluorometry to quantitatively detectable OH radicals in ultrasound aqueous medium. ULTRASONICS SONOCHEMISTRY 2016; 30:18-27. [PMID: 26703198 DOI: 10.1016/j.ultsonch.2015.11.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2015] [Revised: 11/18/2015] [Accepted: 11/19/2015] [Indexed: 05/20/2023]
Abstract
When ultrasound (US) was exposed to aqueous coumarin solution in air atmosphere, the UV-visible and fluorescence spectra of the probe were measured at different US exposure times. The US exposure was carried out at 43 kHz and 500 kHz with different out-put power. It was found that the 500 kHz US produced umbelliferone fluorescence, while the 43 kHz US had no fluorescence. In addition, the coumarin absorbance at 270 nm maximum was decreased with in cases of the US exposure time. In contrary, the fluorescent intensity of umbelliferone at 460 nm increased with increasing of US exposure time. This exhibited that the coumarin probe was converted to umbelliferone by the US exposure, when the 500 kHz US was operated. This was facted that the coumarin framework was caused with addition of OH groups which was generated by the 500 kHz US. Therefore, the umbelliferone fluorescent became a probe to estimate OH radical in US medium. Furthermore, the chemo-fluorometry showed that the emission maximum of the formed umbelliferone could probe the bulk pHs in the US aqueous medium.
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Affiliation(s)
- Kohsuke Hirano
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
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21
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Li K, Kobayashi T. Ultrasound response of aqueous poly(ionic liquid) solution. ULTRASONICS SONOCHEMISTRY 2016; 30:52-60. [PMID: 26597539 DOI: 10.1016/j.ultsonch.2015.10.021] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Revised: 10/30/2015] [Accepted: 10/30/2015] [Indexed: 06/05/2023]
Abstract
Ultrasound (US) effects on aqueous poly(ionic liquid) (PIL) solution were investigated using viscosity and FT-IR spectroscopy after exposure to US of 23, 43, and 96 kHz frequencies at 50 W. The viscosity of the poly(1-vinyl-3-butyl-imidazolium chloride) (PIL) aqueous solution decreased during exposure to US. It then increased gradually within about 10 min as US stopped. The aqueous PIL behavior was then observed using FT-IR spectroscopy. The US exposure enhanced the FT-IR band intensity of the OH stretching. The band intensity returned to its original value after the US stopped. These results responded cyclically to the US on/off. Analysis of the FT-IR spectra revealed that US influenced the breakage and reformation of hydrogen bonds in the PIL and water. Two-dimensional correlation and deconvolution were used to analyze the change of components in the region of 3000-3700 cm(-1) for US exposure. Results of these analyses suggest that US exposure might break hydrogen bonds between PIL segments and water. In the absence of US, hydrogen bonds reformation was also observed between the PIL and water.
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Affiliation(s)
- Kai Li
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Japan.
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22
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Li K, Kobayashi T. A FT-IR spectroscopic study of ultrasound effect on aqueous imidazole based ionic liquids having different counter ions. ULTRASONICS SONOCHEMISTRY 2016; 28:39-46. [PMID: 26384881 DOI: 10.1016/j.ultsonch.2015.06.030] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 06/29/2015] [Accepted: 06/29/2015] [Indexed: 06/05/2023]
Abstract
Ultrasound (US) effect on 1-butyl-3-methyl-imidazolium (BMI) ionic liquids having different counter anions, BF4(-), PF6(-) and Cl(-) in aqueous medium was studied by FT-IR spectroscopy. Their deconvolution spectra were used to analyze the change of hydrogen bond in the absence and presence of US exposure to the ionic liquid. The FT-IR spectra were measured in different water contents without and with US at 23 kHz. These results indicated that the counter anion species in the imidazole based the ionic liquids played an important role for water solvation, when the US was exposed. The US hardly changed hydrogen bonding in the aqueous BMI-PF6, while the BMI-BF4 and BMI-Cl showed obvious change in their FT-IR spectra. Especially for the BMI-Cl, significant change was observed by the US exposure in the range of 2.6 wt% to 20 wt% of water contents. The results showed that the US could break the hydrogen bond in the BMI-Cl ionic liquids. In the case of BMI-BF4, the FT-IR band at 950-1152 cm(-1) was significantly intensified under US exposure, due to that the US influenced BF4(-)-water interaction. But, it was observed that the ionic liquid having PF6(-) was very less changed in the US system.
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Affiliation(s)
- Kai Li
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, Kamitomioka 1603-1, Nagaoka 940-2188, Japan.
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23
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Hirano K, Kobayashi T. Quantitatively chemo-fluorometry diagnostic to nitrite ion in ultrasound aqueous medium containing 2,3-diaminonaphthalene. ULTRASONICS SONOCHEMISTRY 2015; 26:345-350. [PMID: 25882207 DOI: 10.1016/j.ultsonch.2015.03.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/19/2015] [Accepted: 03/19/2015] [Indexed: 06/04/2023]
Abstract
When ultrasound (US) was exposed in aqueous solution of 2,3-diaminonaphthalene (DAN) in air atmosphere, fluorescent spectra were measured after different US exposure times. US exposure was carried out at 43, 141 and 500 kHz with constant out-put power of 50 W. It was found that the DAN fluorescent having 410 nm emission maximum was decreased as the US exposure was increased, but, the fluorescent at 505 nm for 1-[H]-naphthotriazole (NTTA) was increased. This exhibited that the DAN fluorophore was converted to NTTA by the US exposure, especially at 141 kHz. The calibration analysis was indicated the DAN framework was changed to triazole ring from DAN and NO2(-) ion. As a result, the characteristic NTTA fluorescent became probe to NO2(-) ion in US medium. The chemo-fluorometry of the DAN was original work to be useful detecting to nitric acid ion in US exposure solution.
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Affiliation(s)
- Kohsuke Hirano
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan
| | - Takaomi Kobayashi
- Department of Materials Science and Technology, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, Niigata 940-2188, Japan.
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24
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Morandim-Giannetti ADA, Silva RC, Magalhães O, Schor P, Bersanetti PA. Conditions for obtaining polyvinyl alcohol/trisodium trimetaphosphate hydrogels as vitreous humor substitute. J Biomed Mater Res B Appl Biomater 2015. [DOI: 10.1002/jbm.b.33473] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Rosianne Cristina Silva
- Departamento de Engenharia Química; Centro Universitário da FEI, São Bernardo do Campo; São Paulo Brazil
| | - Octaviano Magalhães
- Departamento de Oftalmologia e Ciências Visuais; Escola Paulista de Medicina, Universidade Federal de São Paulo, UNIFESP; São Paulo Brazil
| | - Paulo Schor
- Departamento de Oftalmologia e Ciências Visuais; Escola Paulista de Medicina, Universidade Federal de São Paulo, UNIFESP; São Paulo Brazil
| | - Patrícia Alessandra Bersanetti
- Departamento de Oftalmologia e Ciências Visuais; Escola Paulista de Medicina, Universidade Federal de São Paulo, UNIFESP; São Paulo Brazil
- Departamento de Informática em Saúde; Escola Paulista de Medicina, Universidade Federal de São Paulo, UNIFESP; São Paulo Brazil
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25
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26
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Wang C, Zheng Y, Qiao K, Xie Y, Zhou X. An environmentally friendly preparation and characterization of waterborne polyurethane hydrogels by polyvinyl alcohol physical cross-linking to improve water absorption. RSC Adv 2015. [DOI: 10.1039/c5ra11109a] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The PU/PVA hydrogels had three stages of water absorption. The quick absorption kinetics and high equilibrium water absorption of 70% PU/PVA as wound dressing material could absorb excess exudate and create a moist wound healing environment.
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Affiliation(s)
- Cai Wang
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Yudong Zheng
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Kun Qiao
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Yajie Xie
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
| | - Xiaoteng Zhou
- School of Materials Science and Engineering
- University of Science and Technology Beijing
- Beijing 100083
- PR China
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