Special Issue "Catalytic Olefin Polymerisation and Polyolefins"

A special issue of Polymers (ISSN 2073-4360).

Deadline for manuscript submissions: 31 October 2019

Special Issue Editor

Guest Editor
Dr. Sara Ronca

Department of Materials, Loughborough University, Leicestershire, LE11 3TU, United Kingdom
Website | E-Mail
Interests: polymer; catalysis; polyolefins; organometallic chemistry

Special Issue Information

Dear Colleagues,

More than 60 years have passed since the discovery of the catalytic systems for olefin polymerisation—which nowadays include Ziegler-Natta, Phillips and metallocene/post-metallocene catalysts—used in plants around the world to produce different grades of polyolefins.

Despite the high efficiency reached by the industrial processes, the research in this field shows no sign of decreasing and has indeed expanded into a plethora of new applications, thanks to the tunability of the molecular architectures and functionalities that have been made available by various catalytic systems.

With the current social view of plastic as the ‘bogeyman’ of all man-made materials, it is extremely important to discuss and highlight the pivotal role that polyolefins can and should play in a circular economy, thanks to their inherent low toxicity, low environmental impact at the production stage and good recyclability.

This Special Issue wants to bring the attention of the academic community to the latest developments that are happening in this field, and connect them to the possibility of creating a more sustainable future through plastic, not without it.

Dr. Sara Ronca
Guest Editor

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 papers will be 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. Polymers 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 1500 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

  • Polyolefins
  • Homogeneous catalysis
  • Heterogeneous catalysis

Published Papers (1 paper)

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Research

Open AccessArticle
Structure and Properties of a Metallocene Polypropylene Resin with Low Melting Temperature for Melt Spinning Fiber Application
Polymers 2019, 11(4), 729; https://doi.org/10.3390/polym11040729
Received: 11 March 2019 / Revised: 15 April 2019 / Accepted: 15 April 2019 / Published: 22 April 2019
PDF Full-text (5094 KB) | HTML Full-text | XML Full-text | Supplementary Files
Abstract
An isotactic polypropylene (iPP-1) resin with low melting temperature (Tm) is synthesized by a metallocene catalyst and investigated for melt-spun fiber applications. The structure, thermal and mechanical properties, and feasibility of producing fibers of a commercial metallocene iPP (iPP-2) and [...] Read more.
An isotactic polypropylene (iPP-1) resin with low melting temperature (Tm) is synthesized by a metallocene catalyst and investigated for melt-spun fiber applications. The structure, thermal and mechanical properties, and feasibility of producing fibers of a commercial metallocene iPP (iPP-2) and a conventional Ziegler–Natta iPP (iPP-3) are carefully examined for comparison. Tm of iPP-1 is about 10 °C lower than the other two samples, which is well addressed both in the resin and the fiber products. Besides, the newly developed iPP-1 possesses higher isotacticity and crystallinity than the commercial ones, which assures the mechanical properties of the fiber products. Thanks to the addition of calcium stearate, its crystal grain size is smaller than those of the two other commercial iPPs. iPP-1 shows a similar rheological behavior as the commercial ones and good spinnability within a wide range of take-up speeds (1200–2750 m/min). The tensile property of fibers from iPP-1 is better than commercial ones, which can fulfill the application requirement. The formation of the mesomorphic phase in iPP-1 during melt spinning is confirmed by the orientation and crystallization investigation with wide angle X-ray diffraction (WAXD), which is responsible for its excellent processing capability and the mechanical properties of the resultant fibers. The work may provide not only a promising candidate for the high-performance PP fiber but also a deep understanding of the formation mechanism of the mesomorphic phase during fiber spinning. Full article
(This article belongs to the Special Issue Catalytic Olefin Polymerisation and Polyolefins)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Structure and Properties of a Metallocene Polypropylene Resin with Low Melting Temperature for Melt Spinning Fiber Application
Authors: Renwei Xu, Peng Zhang, Hai Wang, Xu Chen, Jie Xiong, Jinpeng Su, Peng Chen and Zhicheng Zhang

Title: Methylene-bridged Tridentate Salicylaldiminato Binuclear Titanium Complexes as Copolymerization Catalysts for the preparation of LLDPE through [Fe]/[Ti] Tandem Catalysis
Authors: Yani Luo, Jian Li, Derong Luo, Qingliang You, Zifeng Yang, Tingcheng Li, Xiangdan Li, Guangyong Xie

Title: Preparation of Half- and Post-metallocene Hafnium Complexes with Tetrahydroquinoline and Tetrahydrophenanthroline Frameworks for Olefin Polymerization
Authors: Jun Won Baek, Su Jin Kwon, Hyun Ju Lee, Tae Jin Kim, Ji Yeon Ryu, Junseong Lee, Eun Ji Shin, Ki Soo Lee, Bun Yeoul Lee

 

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