Special Issue "Green Synthesis Processes of Polymers"

A special issue of Processes (ISSN 2227-9717). This special issue belongs to the section "Green Processes".

Deadline for manuscript submissions: 31 May 2020.

Special Issue Editors

Dr. Gergely Kali
E-Mail Website
Guest Editor
Saarland University, Campus C4.2, D-66123 Saarbrücken, Germany
Interests: green polymer chemistry; monomers from renewable resources; macromolecular engineering
Prof. Anil K. Bhowmick
E-Mail Website
Co-Guest Editor
Department of Chemical and Biomolecular Engineering, The University of Houston, Houston, TX 77204-4004, USA
Interests: sustainable polymers from renewable sources; polymer nanocomposites and nanomaterials; thermoplastic elastomers and polymer blends; polymer modification; rubber technology; failure and degradation of rubbers; adhesion and adhesives; waste rubber recycling

Special Issue Information

Dear Colleagues,

In recent decades, as a result of chemophobia and rising prices in oil, there has been an increase in the application of naturally occurring materials from renewable instead of fossil resources. This trend has been even more significant in the field of synthetic macromolecular chemistry since polymers are large scale, widely used products, and even small changes in the synthesis procedures may have globally noticeable effects. This Special Issue will focus on the green synthesis possibilities in polymer chemistry, including environmentally favorable initiation/catalysis, the use of monomers/polymers from renewable resources, and low energy consumption reactions. These new conditions deliver more sustainable polymer chemistry, which is essential for future sustainability, but also increases the level of trust in this field. The issue will also compare green polymers with the known commercial ones and try to forecast some application possibilities for them.

Dr. Gergely Kali
Prof. Anil K. Bhowmick
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 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. Processes 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 1400 CHF (Swiss Francs). Please note that for papers submitted after 30 June 2020 an APC of 1500 CHF applies. 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

  • green polymers
  • monomers from renewable resources
  • natural polymers
  • environmentally friendly conditions
  • biodegradability
  • green macromolecular engineering

Published Papers (2 papers)

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Research

Open AccessArticle
Preparation of Sawdust-Filled Recycled-PET Composites via Solid-State Compounding
Processes 2020, 8(1), 100; https://doi.org/10.3390/pr8010100 - 11 Jan 2020
Abstract
Recently, consumer markets have shown great interest in sustainable products. Considerable research efforts are headed towards developing biodegradable and recyclable polymers and composites. In this study, the fabrication of a wood–plastic composite (WPC) via solid state compounding has been examined. Polyethylene terephthalate (PET) [...] Read more.
Recently, consumer markets have shown great interest in sustainable products. Considerable research efforts are headed towards developing biodegradable and recyclable polymers and composites. In this study, the fabrication of a wood–plastic composite (WPC) via solid state compounding has been examined. Polyethylene terephthalate (PET) and wood sawdust waste as major components of waste and challenging materials for the manufacturing of WPCs have been explored. Furthermore, the addition of poly(ε-caprolactone) as a biodegradable plasticizing agent was investigated. Composite powders were prepared by cryogenic solid-state milling (cryomilling) according to a statistical mixture design. Mechanical and water absorption properties were inspected on film samples obtained by hot pressing. Different formulations resulted in a variety of colors, textures, water interactions and mechanical properties. A sawdust content of approximately 25 vol.% was optimal for the best combination of properties. The results indicated that cryomilling is technically advantageous in the production of WPCs. Full article
(This article belongs to the Special Issue Green Synthesis Processes of Polymers)
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Open AccessCommunication
Investigations on Novel Ternary Green Polymer Composite
Processes 2020, 8(1), 31; https://doi.org/10.3390/pr8010031 - 27 Dec 2019
Abstract
In this study, the novel ternary green polymer composites of poly(l-lactic acid) (PLLA)/poly(ethylene adipate)/hexagonal boron nitride (PLLA/PEA/h-BN) were synthesized and prepared. The crystallization rate of the biodegradable polymer PLLA in the composite was significantly increased with the addition of PEA and [...] Read more.
In this study, the novel ternary green polymer composites of poly(l-lactic acid) (PLLA)/poly(ethylene adipate)/hexagonal boron nitride (PLLA/PEA/h-BN) were synthesized and prepared. The crystallization rate of the biodegradable polymer PLLA in the composite was significantly increased with the addition of PEA and functional h-BN. In ternary PLLA/PEA/h-BN composites, PEA can be used as a plasticizer, while h-BN is a functional nucleation agent for PLLA. The analysis of the isothermal crystallization kinetics by the Avrami equation shows that the rate constant k of the ternary PLLA/PEA/h-BN composite represents the highest value, indicating the highest crystallization in the ternary composite. Adding h-BN in the composite can further increase the k value and increase the crystallization rate. Polarized optical microscopy (POM) images reveal that h-BN is an effective nucleation agent that increases the nucleation density of composites. Analysis of wide-angle X-ray diffraction (WAXD) further confirmed that the crystalline structures of PLLA were unchanged by the addition of PEA and h-BN. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) images show that the h-BN particles are uniformly distributed in the composite. The distribution of h-BN having a particle size of a few hundred nm causes an effective nucleation effect and promotes the crystallization of the ternary composites. Full article
(This article belongs to the Special Issue Green Synthesis Processes of Polymers)
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