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Catalysts
Special Issues
Recent Advances in Polymerization Catalysis
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Recent Advances in Polymerization Catalysis

A special issue of Catalysts (ISSN 2073-4344). This special issue belongs to the section "Catalysis in Organic and Polymer Chemistry".

Deadline for manuscript submissions: closed (30 September 2021) | Viewed by 6552

Special Issue Editors

Prof. Dr. IL Kim

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Guest Editor
Department of Polymer Science and Engineering, Pusan National University, Busan, Korea
Interests: polymer synthesis; polymerization catalysis; bionanotechnology; hyperbranched polymers; polypeptides; thermoplastic elastomers
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Jeung-Gon Kim

E-Mail Website
Guest Editor
Department of Chemistry and Research Institute of Physics and Chemistry, Chonbuk National University, Jeonju 54896, Korea
Interests: organic synthesis; polymer synthesis
Prof. Dr. Binyuan Liu

E-Mail Website
Guest Editor
Hebei Key Laboratory of Functional Polymers, Department of Polymer Materials and Engineering, Hebei University of Technology, 8 Guangrong Street, Tianjin 300130, China
Interests: ecological environment (carbon dioxide, biomass, etc.) polymer synthesis and utilization; olefin coordination polymerization and new catalysts; new method for structure-controlled polymerization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Polymerization is the process of connecting monomers together and creating large molecules with different sizes and shapes. Catalysts play a critical role in various types of polymerization. Today, many of the items and products used on a daily basis are produced from polymers; thus, numerous efforts are being devoted to improving the polymerization processes currently employed. The market for polymerization catalysts is anticipated to register a CAGR of around 4%. One of the major factors driving the growth of the market is the increasing production of polymer resins, such as polyolefins, polydienes, polyvinyl chloride, and polyurethane. The economic effects of the COVID-19 pandemic and the strict surveillance of phthalate-based catalysts by environmental agencies, such as the US Environmental Protection Agency and the EU’s Registration, Evaluation, Authorization, and Restriction of Chemicals, have motivated researchers to develop more refined and economic catalyst systems in the polyolefin, condensation polymer, thermosetting polymer, and addition polymer industries.

This Special Issue titled “Recent Advances in Polymerization Catalysis” seeks to present the current state-of-the-art on the subject and to explore potential future developments as a result of recent progress and modern trends in the field of polymerization catalysis, including the development of new metallic, organometallic, and organic catalysts, new advancements in polymerization catalysis and in the synthesis of new polymeric materials, and new insights into the mechanism of catalytic polymerization. Novel catalyst systems for carbon–carbon bond formation via polyinsertions, metathesis, coupling reactions, and controlled radical polymerizations, for ring-opening polymerizations of lactones, lactams, lactides, carbonates, and epoxides, and for the fabrication of creative topologies are within the scope of this Special Issue. Both original articles and reviews are welcome.

Prof. Dr. IL Kim
Prof. Dr. Jeung-Gon Kim
Prof. Dr. Binyuan Liu
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Catalysts is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • Homo- and copolymerizations
  • Metal catalysts
  • Organometallic catalysts
  • Organo-catalysts
  • Topology
  • Mechanism
  • Characterization
  • Vinyl monomers
  • Non-vinyl monomers
  • Depolymerizations

Published Papers (2 papers)

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Research

18 pages, 4199 KiB  
Article
Heterogeneous Double Metal Cyanide Catalyzed Synthesis of Poly(ε-caprolactone) Polyols for the Preparation of Thermoplastic Elastomers
by Chinh-Hoang Tran, Min-Woong Lee, Sang-Woo Park, Jae-Eon Jeong, Soo-Jeong Lee, Wenliang Song, PilHo Huh and Il Kim
Catalysts 2021, 11(9), 1033; https://doi.org/10.3390/catal11091033 - 26 Aug 2021
Cited by 11 | Viewed by 2579
Abstract
A series of polycaprolactones (PCLs) with molecular weights of 950–10,100 g mol−1 and Ð of 1.10–1.87 have been synthesized via one-pot, solvent-free ring-opening polymerization (ROP) of ε-caprolactone (CL) using a heterogeneous double metal cyanide (DMC) catalyst. Various initiators, such as polypropylene glycol, [...] Read more.
A series of polycaprolactones (PCLs) with molecular weights of 950–10,100 g mol−1 and Ð of 1.10–1.87 have been synthesized via one-pot, solvent-free ring-opening polymerization (ROP) of ε-caprolactone (CL) using a heterogeneous double metal cyanide (DMC) catalyst. Various initiators, such as polypropylene glycol, ethylene glycol, propylene glycol, glycerol, and sorbitol, are employed to tune the number of hydroxyl end groups and properties of the resultant PCLs. Kinetic studies indicate that the DMC-catalyzed ROP of CL proceeds via a similar mechanism with the coordination polymerization. Branched PCLs copolymers are also synthesized via the DMC-catalyzed copolymerization of CL with glycidol. The α,ω-hydroxyl functionalized PCLs were successfully used as telechelic polymers to produce thermoplastic poly(ester-ester) and poly(ester-urethane) elastomers with well-balanced stress and strain properties. Full article
(This article belongs to the Special Issue Recent Advances in Polymerization Catalysis)
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11 pages, 6903 KiB  
Article
Preparation of MgCl2-Supported Ziegler-Natta Catalysts via New Surfactants Emulsion for Propylene Polymerization
by Yansong Wu, Jian Li, Wei Ding and Tao Jiang
Catalysts 2021, 11(5), 601; https://doi.org/10.3390/catal11050601 - 06 May 2021
Cited by 3 | Viewed by 3325
Abstract
This article describes a MgCl2-supported Ziegler-Natta catalyst for propylene polymerization prepared via an in situ emulsion technique with new surfactants. The effect of preparation conditions such as the TiCl4/toluene molar ratio, TiCl4-contacting temperature, amount of phthaloyl dichloride, [...] Read more.
This article describes a MgCl2-supported Ziegler-Natta catalyst for propylene polymerization prepared via an in situ emulsion technique with new surfactants. The effect of preparation conditions such as the TiCl4/toluene molar ratio, TiCl4-contacting temperature, amount of phthaloyl dichloride, stirring rate, mixing time of TiCl4/toluene with the Mg complex, and the n-butyl chloride loading was investigated in detail. Scanning electron microscopy and laser particle size analyzer measurements showed that the catalyst particles exhibit a perfectly spherical shape, narrow particle size distribution, and low fine powder content. Energy-dispersive X-ray spectrometry indicated that the Ti, Mg, and Cl elements were evenly distributed throughout the particles. Powder X-ray diffraction measurements indicated the presence of δ-MgCl2 in the catalyst, and FTIR and GC-MS studies confirmed the presence of in situ formed di(ethylhexyl)phthalate (DEHP). Bulk polymerization of propylene using the catalyst was studied, and it was found that the catalyst displayed high activity, high bulk density with high stereospecificity, and excellent hydrogen sensitivity. The polymer produced by the catalyst has a narrow particle size distribution with a low fine powder content. Full article
(This article belongs to the Special Issue Recent Advances in Polymerization Catalysis)
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