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Fernandez JH, Ortega-Toro R, Castro-Suarez JR. Multiple Traces of Families of Epoxy Derivatives as New Inhibitors of the Industrial Polymerization Reaction of Propylene. Polymers (Basel) 2024; 16:2080. [PMID: 39065396 PMCID: PMC11280996 DOI: 10.3390/polym16142080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2024] [Revised: 07/16/2024] [Accepted: 07/17/2024] [Indexed: 07/28/2024] Open
Abstract
In this study, the impact of ethylene oxide, propylene oxide, 1,2-butene oxide, and 1,2-pentene oxide on the polymerization of propylene at an industrial level was investigated, focusing on their influence on the catalytic efficiency and the properties of polypropylene (PP) without additives. The results show that concentrations between 0 and 1.24 ppm of these epoxides negatively affect the reaction's productivity, the PP's mechanical properties, the polymer's fluidity index, and the PP's thermal properties. Fourier transform infrared spectroscopy (FTIR) revealed bands for the Ti-O bond and the Cl-Ti-O-CH2 bonds at 430 to 475 cm-1 and 957 to 1037 cm-1, respectively, indicating the interaction between the epoxides and the Ziegler-Natta catalyst. The thermal degradation of PP in the presence of these epoxides showed a similar trend, varying in magnitude depending on the concentration of the inhibitor. Sample M7, with 0.021 ppm propylene oxide, exhibited significant mass loss at both 540 °C and 600 °C, suggesting that even small concentrations of this epoxide can markedly increase the thermal degradation of PP. This pattern is repeated in samples with 1,2-butene oxide and 1,2-pentene oxide. These results highlight the need to strictly control the presence of impurities in PP production to optimize both the final product's quality and the polymerization process's efficiency.
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Affiliation(s)
- Joaquin Hernandez Fernandez
- Grupo de Investigation CECOPAT&A, Chemistry Program, Department of Natural and Exact Sciences, San Pablo Campus, University of Cartagena, Cartagena 130015, Colombia
- Chemical Engineering Program, School of Engineering, Universidad Tecnológica de Bolivar, Parque Industrial y Tecnológico Carlos Vélez Pombo Km 1 Vía Turbaco, Cartagena 130001, Colombia
- Department of Natural and Exact Science, Universidad de la Costa, Barranquilla 080002, Colombia
| | - Rodrigo Ortega-Toro
- Food Packaging and Shelf-Life Research Group (FP&SL), Food Engineering Department, Universidad de Cartagena, Cartagena 130015, Colombia;
| | - John R. Castro-Suarez
- Área Básicas Exactas, Universidad del Sinú Seccional Cartagena, Cartagena 130015, Colombia;
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2
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Barkhordari S, Alizadeh A. Zinc/aluminum-layered double hydroxide-gallic acid doped carboxymethyl cellulose nanocomposite films for wound healing. Int J Biol Macromol 2024; 260:129556. [PMID: 38244732 DOI: 10.1016/j.ijbiomac.2024.129556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/27/2023] [Accepted: 01/15/2024] [Indexed: 01/22/2024]
Abstract
Effective loading and delivering the wound healing-based materials to the wound site and area with an optimum concentration and limited cytotoxicity are essential for a complete and fast healing process. Here, we have designed Zn/Al-LDH nanoparticles-loaded CMC films for encapsulation and delivery of gallic acid (GA) in order to develop an effective and efficient wound-healing scaffold. The physicochemical properties of the prepared Zn/Al-LDH nanohybrids were thoroughly characterized by several characterization techniques, such as FESEM, Hi-TEM, FTIR, and XRD techniques. The thermal properties of the scaffolds were evaluated by DSC and TGA analysis. The release profiles of GA from fabricated films were studied over 8 h by UV-vis spectroscopy. In vitro drug release studies in PBS solutions with pH 7.4 showed a mono-phasic profile in which the liberation of the drug mainly occurred by scaffold erosion and increased by increasing the experiment period. The in vitro antibacterial activity of Zn/Al-LDH-GA-loaded CMC films was assessed by disk diffusion and cell viability contact tests. The results showed the desired antibacterial activity against Staphylococcus aureus and Escherichia coli bacteria. Incorporating GA within CMC and CMC-Zn/Al-LDH films rereleased good cytocompatibility at the studied incubation time and different concentrations toward human normal HFF cell line than the free drug. The results of the present study indicated that the Zn/Al-LDH and Zn/Al-LDH-GA-loaded CMC have promising wound healing features to further develop a better future for clinical remedy of the different non-healing and hard-to-heal wounds.
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Affiliation(s)
- Soroush Barkhordari
- Department of Organic Chemistry, Faculty Chemistry, Alzahra University, Tehran, Iran
| | - Abdolhmid Alizadeh
- Department of Organic Chemistry, Faculty Chemistry, Alzahra University, Tehran, Iran.
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3
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The effect of SiO2 calcination temperature and [Si]/[Mg] molar ratio on the performance of bi-supported Ziegler-Natta catalysts in ethylene polymerizations. JOURNAL OF POLYMER RESEARCH 2023. [DOI: 10.1007/s10965-023-03448-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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4
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Transition Metal-(μ-Cl)-Aluminum Bonding in α-Olefin and Diene Chemistry. Molecules 2022; 27:molecules27217164. [PMID: 36363991 PMCID: PMC9654437 DOI: 10.3390/molecules27217164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 10/19/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
Olefin and diene transformations, catalyzed by organoaluminum-activated metal complexes, are widely used in synthetic organic chemistry and form the basis of major petrochemical processes. However, the role of M−(μ-Cl)−Al bonding, being proven for certain >C=C< functionalization reactions, remains unclear and debated for essentially more important industrial processes such as oligomerization and polymerization of α-olefins and conjugated dienes. Numerous publications indirectly point at the significance of M−(μ-Cl)−Al bonding in Ziegler−Natta and related transformations, but only a few studies contain experimental or at least theoretical evidence of the involvement of M−(μ-Cl)−Al species into catalytic cycles. In the present review, we have compiled data on the formation of M−(μ-Cl)−Al complexes (M = Ti, Zr, V, Cr, Ni), their molecular structure, and reactivity towards olefins and dienes. The possible role of similar complexes in the functionalization, oligomerization and polymerization of α-olefins and dienes is discussed in the present review through the prism of the further development of Ziegler−Natta processes and beyond.
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Mahmoud ME, Amira MF, Daniele S, El Nemr A, Abouelanwar ME, Morcos BM. Adsorptive removal of Ag/Au quantum dots onto covalent organic frameworks@magnetic zeolite@arabic gum hydrogel and their catalytic microwave-Fenton oxidative degradation of Rifampicin antibiotic. J Colloid Interface Sci 2022; 624:602-618. [PMID: 35691228 DOI: 10.1016/j.jcis.2022.05.132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 05/17/2022] [Accepted: 05/22/2022] [Indexed: 11/16/2022]
Abstract
Recent progress in nanotechnology via incorporation of small particle size as quantum dots (QDs) (1-10 nm) in many industrial activities and commercial products has led to significant undesired environmental impacts. Therefore, QDs removal from wastewater represents an interesting research topic with a lot of challenges for scientists and engineers nowadays. In this work, the coagulative removal of metal quantum dots as silver and gold from industrial water samples is explored. A novel biosorbent was assembled via binding of covalent organic frameworks (COFs) with magnetic zeolite and Arabic gum hydrogel (COFs@MagZ@AGH) as a promising removal material for Ag-QDs and Au-QDs. This was fully characterized by EDX, SEM, TEM, FT-IR, XPS, XRD and surface area and applied in coagulative removal of Au-QDs and Ag-QDs in presence of several experimental factors as pH, presence of other electrolytes, stirring time, initial QDs concentration, coagulant dosage, and temperature in order to optimize the removal processes. At optimum conditions, COFs@MagZ@AGH was able to recover 99.19% and 87.57% of Ag-QDs and Au-QDs QDs, respectively via chemical adsorption mechanism with perfect fitting to pseudo-second order model. Reuse of the recovered Ag/Au-QDs@COFs@MagZ@AGH as efficient catalysts in catalytic degradation of Rifampicin antibiotic (Rf) from water was additionally investigated and optimized via microwave-Fenton catalysts with excellent oxidative degradation efficiency (100%). Reusability and applicability of the biosorbent (COFs@MagZ@AGH) and catalysts (Ag/Au-QDs@COFs@MagZ@AGH) in real industrial water samples were also explored and successfully accomplished.
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Affiliation(s)
- Mohamed E Mahmoud
- Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt.
| | - Mohamed F Amira
- Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt
| | - Stéphane Daniele
- Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYONUMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne, France
| | - Ahmed El Nemr
- Environmental Division, National Institute of Oceanography and Fisheries, Kayet Bey, El-Anfoushy, Alexandria, Egypt
| | - Magda E Abouelanwar
- Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt; Univ Lyon, Université Claude Bernard Lyon 1, CNRS, IRCELYONUMR 5256, 2 Avenue Albert Einstein, 69626 Villeurbanne, France
| | - Bishoy M Morcos
- Faculty of Sciences, Chemistry Department, Alexandria University, P.O. Box 426, Ibrahimia 21321, Alexandria, Egypt
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Jandaghian MH, Maddah Y, Sepahi A, Hosseini S, Nikzinat E, Masoori M, Afzali K, Rashedi R, Houshmandmoayed S. Chlorination of Mg(OEt) 2 with Halocarbons: A Promising Approach for Eliminating Chlorine-Containing Activators from Ziegler–Nattas’ Recipes. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.2c01857] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Affiliation(s)
- Mohammad Hossein Jandaghian
- Department of Chemical Engineering and Color Technology, Amirkabir University of Technology, Tehran 159163-4311, Iran
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
| | - Yasaman Maddah
- Department of Chemical Engineering and Color Technology, Amirkabir University of Technology, Tehran 159163-4311, Iran
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario N2L3G1, Canada
| | - Abdolhannan Sepahi
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
| | - Shahin Hosseini
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
| | - Ehsan Nikzinat
- Department of Chemical Engineering and Color Technology, Amirkabir University of Technology, Tehran 159163-4311, Iran
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
| | - Maryam Masoori
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
| | - Kamal Afzali
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
| | - Reza Rashedi
- Department of Chemical Engineering and Color Technology, Amirkabir University of Technology, Tehran 159163-4311, Iran
| | - Saeed Houshmandmoayed
- Department of Chemical Engineering and Color Technology, Amirkabir University of Technology, Tehran 159163-4311, Iran
- Research and Development Center, Jam Petrochemical Company, Pars Special Economic Energy Zone, Asaluyeh, Bushehr 11368-75118, Iran
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Eutectic solvents containing Al-compounds: new benign alternatives to BF3 co-initiator in producing low viscosity polyalphaolefin oils. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04435-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Investigation of Optimal Condition of Ethylene Polymerization Using a New Three-Metallic High-Performance Ziegler–Natta Catalyst: Experimental Design and Polymer Characterization. Catal Letters 2022. [DOI: 10.1007/s10562-022-03974-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Rezaeian A, Hanifpour A, Teimoury HR, Nekoomanesh-Haghighi M, Ahmadi M, Bahri-Laleh N. Synthesis of highly spherical Ziegler–Natta catalyst by employing Span 80 as an emulsifier suitable for UHMWPE production. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04122-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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