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El-Ghoul Y, Altuwayjiri AS, Alharbi GA. Synthesis and characterization of new electrospun medical scaffold-based modified cellulose nanofiber and bioactive natural propolis for potential wound dressing applications. RSC Adv 2024; 14:26183-26197. [PMID: 39161434 PMCID: PMC11332191 DOI: 10.1039/d4ra04231j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2024] [Accepted: 08/14/2024] [Indexed: 08/21/2024] Open
Abstract
Recently, the design of polymer nanofibers using the electrospinning process has attracted much interest. Particularly the use of natural polymers has promoted many advantages in their biomedical applications. However, the combination of multiple natural polymers remains a great challenge in terms of electrospun production and applied performance. From this perspective, the current investigation highlights the study of the preparation of electrospun nanomaterial scaffolds based on combined natural polymers for improved wound healing performance. First, we have synthesized a crosslinked polymer by reacting microcrystalline cellulose (MC) and chitosan (CS) biopolymer via the intermediate of citric acid as a crosslinking agent. Then a natural propolis biomolecule was incorporated into the polymer network. Different MC/CS blend ratios of 90/10 and 70/30 were then used and various machine parameters were optimized to obtain nanofiber scaffolds with excellent strength and structures. SEM, IR, physicochemical, mechanical, and morpho-logical characterization were then performed. SEM evaluation revealed homogeneous and bead-free nanofibrous structures, with well-defined morphology and a random deposition that could accurately mimic the extracellular matrix of native skin. The calculated average nanofiber diameters for the MC/CS blend ratios at 90/10 and 70/30 were 431.4 and 441.2 nm, respectively. The results showed that when the chitosan amount increased, larger nanofibers with narrow diameter distribution appeared. The prepared nanomaterials had a significant and close water vapor permeability of about 1735.12 and 1698.52 g per m per day for the two blend ratios of 90/10 and 70/30, respectively. The examination of swelling behavior revealed a noteworthy enhancement in hydrophilicity, a necessary attribute for improved healing efficacy. FT-IR analysis confirmed the success and the stability of the chemical crosslinking reaction between the two biopolymers before nanofiber conception. Excellent mechanical properties were acquired, based on the chitosan content. Both developed nanofiber scaffolds exhibited high tensile strength and Young's modulus values. The incorporation of 30% chitosan versus 10% results in an increase in tensile strength of 11% and 14% in Young's modulus. Therefore, we could adjust the different mechanical properties simply by varying the mixing rate of the electrospun polymers. Using epithelial HepG2 cells, viability and kinetic cell adhesion assays were assessed to obtain biological evaluation. No cytotoxicity was observed and good cytocompatibility was confirmed. Functionalized nanofiber biomaterials with different MC/CS ratios substantiated significant bactericidal effectiveness against Gram-positive and Gram-negative bacterial culture strains. The novel functional electrospun wound dressing scaffold demonstrated effective and promising biomedical performance, healing both acute and chronic wounds.
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Affiliation(s)
- Yassine El-Ghoul
- Department of Chemistry, College of Science, Qassim University Buraidah 51452 Saudi Arabia
- Textile Engineering Laboratory, University of Monastir Monastir 5019 Tunisia
| | | | - Ghadah A Alharbi
- Department of Chemistry, College of Science, Qassim University Buraidah 51452 Saudi Arabia
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Al-Hazmy SM, EL-Ghoul Y, Al-Harby J, Tar H, Alminderej FM. Synthesis, Characterization, and Performance of Pyridomethene-BF2 Fluorescence Dye-Doped PVA Thin Film and PVP Nanofibers as Low γ-ray Dosimeters. ACS OMEGA 2022; 7:34002-34011. [PMID: 36188249 PMCID: PMC9520551 DOI: 10.1021/acsomega.2c03174] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Accepted: 08/09/2022] [Indexed: 06/16/2023]
Abstract
Currently, particular attention is paid to public health related to the field of γ-ray dosimetry, which is becoming increasingly important in medical diagnostic processes. Incorporating sensitive dyes as radiation dose sensors in different material hosts has shown promising radiation dosimetry application routes. In this perspective, the current study proposes a new fluorescent dye based on boron difluoride complex, the pyridomethene-BF2 named 2-(1-(difluoroboraneyl)-1,2-dihydroquinolin-2-yl)-2-(1-methylquinoxalin-2-ylidene) acetonitrile (DBDMA) as an indicator for low γ-ray doses. The different optical and quantum chemical parameters and the spectral behavior of the selected fluorescent dye were first studied. Then, PVP/DBDMA electrospun nanofibers and PVA/DBDMA thin films were prepared. The different UV-vis spectrophotometric and fluorescence studies revealed a clear change after exposure to different γ-ray doses. Thermogravimetric analysis exhibited excellent thermal stability of the prepared nanocomposite films, showing altered thermal behavior after γ-ray treatment. Furthermore, the SEM evaluation displayed a significant modification in the surface morphology of the two designed nanomaterials with increased radiation dose intensity. These novel forms of dosimeter designed in nanoscale composites could therefore constitute a promising and efficient alternative for rapid and accurate detection of low doses of γ-rays in various medical applications.
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Affiliation(s)
- Sadeq M. Al-Hazmy
- Department
of Chemistry, College of Science, Qassim
University, Buraidah 51452, Saudi Arabia
- Department
of Chemistry, College of Science, Sana’a
University, Sana’a 1247, Yemen
| | - Yassine EL-Ghoul
- Department
of Chemistry, College of Science, Qassim
University, Buraidah 51452, Saudi Arabia
- Textile
Engineering Laboratory, University of Monastir, Monastir 5019, Tunisia
| | - Jameelah Al-Harby
- Department
of Chemistry, College of Science, Qassim
University, Buraidah 51452, Saudi Arabia
| | - Haja Tar
- Department
of Chemistry, College of Science, Qassim
University, Buraidah 51452, Saudi Arabia
| | - Fahad M. Alminderej
- Department
of Chemistry, College of Science, Qassim
University, Buraidah 51452, Saudi Arabia
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Naseri E, Ahmadi A. A review on wound dressings: Antimicrobial agents, biomaterials, fabrication techniques, and stimuli-responsive drug release. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111293] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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EL-Ghoul Y, Alminderej FM, Alsubaie FM, Alrasheed R, Almousa NH. Recent Advances in Functional Polymer Materials for Energy, Water, and Biomedical Applications: A Review. Polymers (Basel) 2021; 13:4327. [PMID: 34960878 PMCID: PMC8708011 DOI: 10.3390/polym13244327] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Revised: 12/02/2021] [Accepted: 12/06/2021] [Indexed: 01/10/2023] Open
Abstract
Academic research regarding polymeric materials has been of great interest. Likewise, polymer industries are considered as the most familiar petrochemical industries. Despite the valuable and continuous advancements in various polymeric material technologies over the last century, many varieties and advances related to the field of polymer science and engineering still promise a great potential for exciting new applications. Research, development, and industrial support have been the key factors behind the great progress in the field of polymer applications. This work provides insight into the recent energy applications of polymers, including energy storage and production. The study of polymeric materials in the field of enhanced oil recovery and water treatment technologies will be presented and evaluated. In addition, in this review, we wish to emphasize the great importance of various functional polymers as effective adsorbents of organic pollutants from industrial wastewater. Furthermore, recent advances in biomedical applications are reviewed and discussed.
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Affiliation(s)
- Yassine EL-Ghoul
- Department of Chemistry, College of Science, Qassim University, King Abdulaziz Rd, P.O. Box 1162, Buraidah 51452, Saudi Arabia
- Textile Engineering Laboratory, University of Monastir, Monastir 5019, Tunisia
| | - Fahad M. Alminderej
- Department of Chemistry, College of Science, Qassim University, King Abdulaziz Rd, P.O. Box 1162, Buraidah 51452, Saudi Arabia
| | - Fehaid M. Alsubaie
- National Center for Chemical Catalysis Technology, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia;
| | - Radwan Alrasheed
- National Center for Desalination & Water Treatment Technology, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia;
| | - Norah H. Almousa
- National Center for Chemical Catalysis Technology, King Abdulaziz City for Science and Technology, P.O. Box 6086, Riyadh 11442, Saudi Arabia;
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Alashrah S, El-Ghoul Y, Almutairi FM, Omer MAA. Development, Characterization and Valuable Use of Novel Dosimeter Film Based on PVA Polymer Doped Nitro Blue Tetrazolium Dye and AgNO 3 for the Accurate Detection of Low X-ray Doses. Polymers (Basel) 2021; 13:polym13183140. [PMID: 34578041 PMCID: PMC8473152 DOI: 10.3390/polym13183140] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 09/09/2021] [Accepted: 09/11/2021] [Indexed: 12/26/2022] Open
Abstract
Currently, the uncontrolled exposure of individuals to X-rays during medical examinations represents a substantial danger that threatens both medical professionals and patients. Therefore, radiation dosimetry for low X-ray doses is a very important control of radiation practice in medical diagnostic radiology. In line with this, the current study proposes a valuable dosimeter-based PVA thin film doubly doped with silver nitrate salt and nitro blue tetrazolium dye. The nanocomposite film was prepared via a simple casting method and the different processing parameters were optimized. The performance of radiation detection was evaluated according to optical, chromic, chemical and structural changes after exposure to variable low X-ray doses (0, 2, 4, 10 and 20 mGy). The different film labels exhibited an excellent stability behavior in dark and light upon 30 days of storage. The UV-Vis spectrophotometric study showed a gradual increase in the maximum absorbance as a function of the dose and the corresponding response curve confirmed this linear variation (R = 0.998). A clear structural modification was recorded via X-ray diffraction (XRD) analysis revealing the increase in crystallinity with the level of the dose received by the nanocomposite films. Microscopic surface analysis via SEM assessments revealed a significant morphological change in PVA/Ag+/NBT films exposed to increased radiation doses and typical dendrites growing in needle- or tree-like microstructures appeared with a high X-ray dose. Finally, the nanocomposite films before and after irradiation were evaluated via a spectrocolorimetric study and the different CIELab coordinates, the color difference, as well as the color strength, showed a linear correlation with the intensity of the applied dose. This new dosimeter design could, therefore, provide a promising and efficient alternative for prompt and accurate detection of low X-rays doses in diagnostic radiology.
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Affiliation(s)
- Saleh Alashrah
- Department of Physics, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
| | - Yassine El-Ghoul
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia
- Textile Engineering Laboratory, University of Monastir, Monastir 5019, Tunisia
- Correspondence:
| | - Faisal Muteb Almutairi
- College of Science, Al-Imam Muhammad Ibn Saud Islamic University, Riyadh 11623, Saudi Arabia;
| | - Mohammed Ahmed Ali Omer
- Department of Radiologic Technology, College of Applied Medical Sciences, Qassim University, Buraidah 51452, Saudi Arabia;
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Synthesis and Characterization of a New Nanocomposite Film Based on Polyvinyl Alcohol Polymer and Nitro Blue Tetrazolium Dye as a Low Radiation Dosimeter in Medical Diagnostics Application. Polymers (Basel) 2021; 13:polym13111815. [PMID: 34072823 PMCID: PMC8197916 DOI: 10.3390/polym13111815] [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: 04/23/2021] [Revised: 05/25/2021] [Accepted: 05/27/2021] [Indexed: 02/06/2023] Open
Abstract
Dosimetry is a field of increasing importance in diagnostic radiology. There has been a realization among healthcare professionals that the dose of radiation received by patients via modern medical X-ray examinations could induce acute damage to the skin and eyes. The present study highlights the synthesis of polyvinyl alcohol/nitro blue tetrazolium nanocomposite films (PVA/NBT) for radiation detection depending on chromic, optical, chemical and morphologic changes. First, we synthesized the nanocomposite film-based PVA doped with NBT and the different parameters of the preparation procedure were optimized. Then The films were exposed to different low X-ray doses on the scale of mGy level (0, 2, 4, 10 and 20 mGy). The sensitivity and the performance of the made composite films were evaluated via different characterization methods. Indeed, the response curve based on UV-Vis absorptions revealed a linear increase in absorbance with increased radiation doses (R = 0.998). FTIR analysis showed a clear chemical modification in recorded spectra after irradiation. X-ray diffraction assessment revealed clear structural changes in crystallinity after ionization treatment. SEM analysis showed a clear morphological modification of PVA/NBT films after irradiation. In addition, the prepared PVA/NBT films exhibited excellent pre- and post-irradiation stability in dark and light. Finally, the quantitative colorimetry study confirmed the performance of the prepared films and the different colorimetric coordinates, the total color difference (∆E) and the color strength (K/S) showed a linear increase with increasing X-ray doses. The made nanocomposite PVA/NBT film might offer promising potential for an effective highly sensitive medical dosimeter applied for very low doses in X-ray diagnostic radiology.
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Preparation and Characterization of a New Polymeric Multi-Layered Material Based K-Carrageenan and Alginate for Efficient Bio-Sorption of Methylene Blue Dye. Polymers (Basel) 2021; 13:polym13030411. [PMID: 33525384 PMCID: PMC7865780 DOI: 10.3390/polym13030411] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Revised: 01/20/2021] [Accepted: 01/25/2021] [Indexed: 12/15/2022] Open
Abstract
The current study highlights a novel bio-sorbent design based on polyelectrolyte multi-layers (PEM) biopolymeric material. First layer was composed of sodium alginate and the second was constituted of citric acid and k-carrageenan. The PEM system was crosslinked to non-woven cellulosic textile material. Resulting materials were characterized using FT-IR, SEM, and thermal analysis (TGA and DTA). FT-IR analysis confirmed chemical interconnection of PEM bio-sorbent system. SEM features indicated that the microspaces between fibers were filled with layers of functionalizing polymers. PEM exhibited higher surface roughness compared to virgin sample. This modification of the surface morphology confirmed the stability and the effectiveness of the grafting method. Virgin cellulosic sample decomposed at 370 °C. However, PEM samples decomposed at 250 °C and 370 °C, which were attributed to the thermal decomposition of crosslinked sodium alginate and k-carrageenan and cellulose, respectively. The bio-sorbent performances were evaluated under different experimental conditions including pH, time, temperature, and initial dye concentration. The maximum adsorbed amounts of methylene blue are 124.4 mg/g and 522.4 mg/g for the untreated and grafted materials, respectively. The improvement in dye sorption evidenced the grafting of carboxylate and sulfonate groups onto cellulose surface. Adsorption process complied well with pseudo-first-order and Langmuir equations.
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EL-Ghoul Y, Ammar C, Alminderej FM, Shafiquzzaman M. Design and Evaluation of a New Natural Multi-Layered Biopolymeric Adsorbent System-Based Chitosan/Cellulosic Nonwoven Material for the Biosorption of Industrial Textile Effluents. Polymers (Basel) 2021; 13:polym13030322. [PMID: 33498334 PMCID: PMC7864031 DOI: 10.3390/polym13030322] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 01/09/2021] [Accepted: 01/12/2021] [Indexed: 01/21/2023] Open
Abstract
The adsorption phenomenon using low-cost adsorbents that are abundant in nature is of great interest when the adsorbed capacity is significant. A newly designed natural polyelectrolyte multi-layered (PEM) biopolymeric system-based chitosan/modified chitosan polymer and functionalized cellulosic nonwoven material was prepared and used as an effective adsorbent for Reactive Red 198 (RR198) dye solutions. The bio-sorbent was characterized by FTIR, SEM, and thermal (TGA/DTA) analysis. The swelling behavior was also evaluated, showing the great increase of the hydrophilicity of the prepared adsorbent biopolymer. The effect of various process parameters on the performance of RR198 dye removal such as pH, contact time, temperature, and initial dye concentration was studied. The biopolymeric system has shown good efficiency of adsorption compared to other adsorbents based on chitosan polymer. The highest adsorption capacity was found to be 722.3 mgg−1 at pH = 4 (ambient temperature, time = 120 min and dye concentration = 600 mg L−1). The adsorption process fitted well to both pseudo-second-order kinetics and Freundlich/Temkin adsorption isotherm models. Regarding its low cost, easy preparation, and promising efficient adsorption results, this new concepted multi-layered bio-sorbent could be an effective solution for the treatment of industrial wastewater.
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Affiliation(s)
- Yassine EL-Ghoul
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
- Textile Engineering Laboratory, University of Monastir, Monastir 5019, Tunisia;
- Correspondence: or ; Tel.: +966-595-519-071
| | - Chiraz Ammar
- Textile Engineering Laboratory, University of Monastir, Monastir 5019, Tunisia;
- Department of Fashion Design, College of Design, Qassim University, Al Fayziyyah Buraidah 52383, Saudi Arabia
| | - Fahad M. Alminderej
- Department of Chemistry, College of Science, Qassim University, Buraidah 51452, Saudi Arabia;
| | - Md. Shafiquzzaman
- Department of Civil Engineering, College of Engineering, Qassim University, Buraidah 51452, Saudi Arabia;
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In situ generated silica reinforced polyvinyl alcohol/liquefied chitin biodegradable films for food packaging. Carbohydr Polym 2020; 238:116182. [DOI: 10.1016/j.carbpol.2020.116182] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Revised: 03/13/2020] [Accepted: 03/14/2020] [Indexed: 12/14/2022]
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Jiao C, Li M, Chen X, Li S. Flame retardancy and thermal decomposition behavior of TPU/chitosan composites. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4752] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chuanmei Jiao
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
| | - Mingxin Li
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
| | - Xilei Chen
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
| | - Shaoxiang Li
- College of Environment and Safety EngineeringQingdao University of Science and Technology Qingdao Shandong 266042 China
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