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Cherumukkil S, Agrawal S, Jasra RV. Sulfur Polymer as Emerging Advanced Materials: Synthesis and Applications. ChemistrySelect 2023. [DOI: 10.1002/slct.202204428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Sandeep Cherumukkil
- Research Centre, Vadodara Manufacturing Division, Reliance Industries Limited Vadodara Gujarat 391346 India
| | - Santosh Agrawal
- Research Centre, Vadodara Manufacturing Division, Reliance Industries Limited Vadodara Gujarat 391346 India
| | - Raksh Vir Jasra
- Research Centre, Vadodara Manufacturing Division, Reliance Industries Limited Vadodara Gujarat 391346 India
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2
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Sheydaei M. Sodium sulfide-based polysulfide polymers: synthesis, cure, thermal and mechanical properties. J Sulphur Chem 2022. [DOI: 10.1080/17415993.2022.2088235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Milad Sheydaei
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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Development of Efficient and Selective Processes for the Synthesis of Commercially Important Chlorinated Phenols. ORGANICS 2021. [DOI: 10.3390/org2030012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
para-Selective processes for the chlorination of phenols using sulphuryl chloride in the presence of various sulphur-containing catalysts have been successfully developed. Several chlorinated phenols, especially those derived by para-chlorination of phenol, ortho-cresol, meta-cresol, and meta-xylenol, are of significant commercial importance, but chlorination reactions of such phenols are not always as regioselective as would be desirable. We, therefore, undertook the challenge of developing suitable catalysts that might promote greater regioselectivity under conditions that might still be applicable for the commercial manufacture of products on a large scale. In this review, we chart our progress in this endeavour from early studies involving inorganic solids as potential catalysts, through the use of simple dialkyl sulphides, which were effective but unsuitable for commercial application, and through a variety of other types of sulphur compounds, to the eventual identification of particular poly(alkylene sulphide)s as very useful catalysts. When used in conjunction with a Lewis acid such as aluminium or ferric chloride as an activator, and with sulphuryl chloride as the reagent, quantitative yields of chlorophenols can be obtained with very high regioselectivity in the presence of tiny amounts of the polymeric sulphides, usually in solvent-free conditions (unless the phenol starting material is solid at temperatures even above about 50 °C). Notably, poly(alkylene sulphide)s containing longer spacer groups are particularly para-selective in the chlorination of m-cresol and m-xylenol, while, ones with shorter spacers are particularly para-selective in the chlorination of phenol, 2-chlorophenol, and o-cresol. Such chlorination processes result in some of the highest para/ortho ratios reported for the chlorination of phenols.
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Kalaee M, Abdouss M, Shakiba M. Synthesis and characterization of aliphatic polysulfides by interfacial polycondensation of sodium tetrasulfide with dichloroalkanes in the presence of quaternary onium salts. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1787413] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Mohammadreza Kalaee
- Department of Polymer and Chemical Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Majid Abdouss
- Department of Chemistry, Amirkabir University of Technology, Tehran, Iran
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Sheydaei M, Alinia-Ahandani E. Synthesis and characterization of methylene-xylene-based polysulfide block-copolymer/carbon nanotube nanocomposites via in situ polymerization method. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1746790] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Milad Sheydaei
- Faculty of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
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Smith K, Hegazy AS, El-Hiti GA. para-Selective chlorination of cresols and m-xylenol using sulfuryl chloride in the presence of poly(alkylene sulfide)s. J Sulphur Chem 2020. [DOI: 10.1080/17415993.2020.1740226] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Keith Smith
- School of Chemistry, Cardiff University, Cardiff, UK
| | - Amany S. Hegazy
- School of Chemistry, Cardiff University, Cardiff, UK
- Department of Chemistry, University of Wales, Swansea, UK
| | - Gamal A. El-Hiti
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Smith K, Hegazy AS, El-Hiti GA. The use of polymeric sulfides as catalysts for the para-regioselective chlorination of phenol and 2-chlorophenol. J Sulphur Chem 2019. [DOI: 10.1080/17415993.2019.1688815] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Keith Smith
- School of Chemistry, Cardiff University, Cardiff, UK
| | - Amany S. Hegazy
- School of Chemistry, Cardiff University, Cardiff, UK
- Department of Chemistry, University of Wales Swansea, Swansea, UK
| | - Gamal A. El-Hiti
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Pirayesh A, Salami-Kalajahi M, Roghani-Mamaqani H, Najafi F. Polysulfide Polymers: Synthesis, Blending, Nanocomposites, and Applications. POLYM REV 2018. [DOI: 10.1080/15583724.2018.1492616] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Amin Pirayesh
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Mehdi Salami-Kalajahi
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Hossein Roghani-Mamaqani
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
| | - Faezeh Najafi
- Department of Polymer Engineering, Sahand University of Technology, Tabriz, Iran
- Institute of Polymeric Materials, Sahand University of Technology, Tabriz, Iran
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Yousif E, Hasan A, El-Hiti GA. Spectroscopic, Physical and Topography of Photochemical Process of PVC Films in the Presence of Schiff Base Metal Complexes. Polymers (Basel) 2016; 8:polym8060204. [PMID: 30979299 PMCID: PMC6432278 DOI: 10.3390/polym8060204] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Revised: 05/17/2016] [Accepted: 05/20/2016] [Indexed: 11/18/2022] Open
Abstract
The photostability of poly(vinyl chloride), PVC, containing various Schiff base metal complexes (0.5% by weight) was investigated. Various indices corresponding to a number of functional groups were monitored with irradiation of polymeric films to determine their photostabilization activities. The quantum yield of the chain scission (Φcs) of modified polymeric films was found to be (1.15–4.65) × 106. The surface morphology of a PVC sample was investigated by the use of atomic force microscope (AFM). The photostability of PVC films in the presence of Schiff base additives was found to follow the following order: PVC < PVC + CuL2 < PVC + CdL2 < PVC + ZnL2 < PVC + SnL2 < PVC + NiL2. Various mechanisms for PVC films photostability containing the Schiff base additives have been suggested.
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Affiliation(s)
- Emad Yousif
- Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq.
| | - Ali Hasan
- Department of Chemistry, College of Science, Al-Nahrain University, Baghdad 64021, Iraq.
| | - Gamal A El-Hiti
- Cornea Research Chair, Department of Optometry, College of Applied Medical Sciences, King Saud University, P.O. Box 10219, Riyadh 11433, Saudi Arabia.
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Sheydaei M, Jabari H, Ali-Asgari Dehaghi H. Synthesis and characterization of ethylene-xylene-based polysulfide block-copolymers using the interfacial polymerization method. J Sulphur Chem 2016. [DOI: 10.1080/17415993.2016.1177054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Milad Sheydaei
- Department of Polymer Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Hamed Jabari
- Department of Polymer Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
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Viscoelastic, Spectroscopic and Microscopic Study of the Photo Irradiation Effect on the Stability of PVC in the Presence of Sulfamethoxazole Schiff’s Bases. Polymers (Basel) 2015. [DOI: 10.3390/polym7111508] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Photochemical Stability and Photostabilizing Efficiency of Poly(methyl methacrylate) Based on 2-(6-Methoxynaphthalen-2-yl)propanoate Metal Ion Complexes. Polymers (Basel) 2015. [DOI: 10.3390/polym7061005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Sheydaei M, Allahbakhsh A, Haghighi AH, Ghadi A. Synthesis and characterization of poly(methylene disulfide) and poly(ethylene disulfide) polymers in the presence of a phase transfer catalyst. J Sulphur Chem 2013. [DOI: 10.1080/17415993.2013.794800] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Milad Sheydaei
- Department of Polymer Engineering, South Tehran Branch, Islamic Azad University, Tehran, Iran
| | - Ahmad Allahbakhsh
- Department of Polymer Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Amir Hossein Haghighi
- Department of Polymer Engineering, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Arezou Ghadi
- Department of Chemical Engineering, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
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Smith K, Balakit AA, El-Hiti GA. Poly(propylene sulfide)–borane: convenient and versatile reagent for organic synthesis. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.037] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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